en

MW-1000387-2

Installation and Service Manual

Thermodynamic water heater

SPC 200
SPC 300
SPC 300S
Contents

Contents
1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1.2 Water connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1.3 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1.4 Website . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1.5 Others . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3.1 Manufacturer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3.2 Installer's liability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Safety data sheet: refrigerant fluid R-134a . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4.1 Product identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4.2 Hazard identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4.3 Composition of/Information on the ingredients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4.4 First aid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4.5 Fire prevention measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4.6 In the event of accidental spillage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.4.7 Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
1.4.8 Personal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.4.9 Considerations on disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.4.10 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2 About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1 Symbols used in the manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.2 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1 Homologations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.1 Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1.2 2014/68/UE Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.1.3 Factory test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3.2.1 Specifications for the domestic hot water sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2.2 Appliance specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.2.3 Heating curve for the DHW tank as a function of the air temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2.4 Heating curve for the maximum domestic hot water set point reached by the heat pump as a function of the
air temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4 Description of the product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4.1 General description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3 Operating principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1 Installation regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2 Package list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5.2.1 Standard delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5.2.2 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3 Storage and transport of the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3.1 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.4 Choice of the location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.4.1 Data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.4.2 Position of the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.4.3 Main dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.5 Positioning the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.5.1 Unpacking the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.5.2 Positioning the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.5.3 Levelling the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.6 Water connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5.6.1 Connecting the tank to the domestic water circuit (secondary circuit) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5.6.2 Connecting to a boiler (SPC 300S model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5.6.3 Connecting to solar collectors (SPC 300S model) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
5.7 Condensate discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2 7734712 - v01 - 22052019

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5.8 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

5.8.1 Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5.8.2 Connecting the back-up authorisation - X7 connector (SPC 300S model) . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5.8.3 Connection with timer programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
5.8.4 Connection with timer programming and photovoltaic signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5.9 Electrical diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
5.10 Filling the thermodynamic water heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

6 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.1 Control panel description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.1.1 Description of the keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.1.2 Description of the display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
6.1.3 Browsing in the menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.2 Points to check before commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.3 Commissioning the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.4 Checks and settings after commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
6.5 Selecting the operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.6 Reading out measured values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.6.1 Measurements menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.6.2 Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.7 Modifying the installer parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.7.1 Accessing the parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.7.2 List of parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.7.3 Control system sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.7.4 Restoring the factory settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

7 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.1 Shutting down the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
7.2 Frost protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

8 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.1 General instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.2 Standard inspection and maintenance operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.2.1 Refrigerant circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
8.2.2 Check the hydraulic circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
8.2.3 Aeraulics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.2.4 Impressed current anode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
8.2.5 Checking the safety valve or safety unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.2.6 Descaling the thermodynamic water heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.2.7 Cleaning the condensate discharge pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
8.3 Accessing the bottom inspection trap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
8.4 Maintenance form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
9.1 Messages (bxx or Exx-type codes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
9.1.1 type error codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
9.1.2 Messages ( -type codes)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
9.2 Log of messages and faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
9.2.1 Error display Err . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52
9.2.2 Displaying lockouts bL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
9.2.3 Resetting the lockout and error memory to zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

10 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
10.1 EC Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
10.2 Information on the ecodesign and energy labelling directives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
10.2.1 Specific information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7734712 - v01 - 22052019 3

1 Safety

1 Safety
1.1 Safety

Danger
This appliance can be used by children aged from
8 years and above and persons with reduced
physical, sensory or mental capabilities or lack of
experience and knowledge if they have been
given supervision or instruction concerning use of
the appliance in a safe way and understand the
hazards involved. Children shall not play with the
appliance. Cleaning and user maintenance
should not be carried out by children without adult
supervision.

1.1.1 Installation
Ensure sufficient space is available to allow correct
installation of the appliance.
See
Position of the appliance section (Installation and
Service Manual).

1.1.2 Water connections

The appliance is intended to be permanently
connected to the water mains.
Maximum / minimum water inlet pressure:
See
Technical specifications section.
The safety valve (not supplied) must be regularly
operated in order to remove limescale deposits and
ensure that it is not blocked.
Draining: shut off the domestic cold water inlet. Open
a hot water tap in the installation and then open the
drain valve on the cold water inlet. When the water
stops flowing, the appliance has been drained.
A pressure reducer (not provided) is necessary when
the supply pressure exceeds 80% of the calibration of
the safety valve or safety unit and it must be located
upstream of the appliance.
As water may flow out of the discharge pipe on the
pressure limiter device, the discharge pipe must be
kept clear and open.

4 7734712 - v01 - 22052019

 1 Safety

Connect the pressure limiter device to a drain pipe,

kept open to the air, in a frost-free environment, and
at a continuous downward gradient.

1.1.3 Electrical connections

A disconnection device must be fitted to the
permanent pipes in accordance with installation rules.
If the power cable is damaged, it must be replaced by
the manufacturer, its after sales service or persons
with similar qualifications in order to obviate any
danger.
This appliance must not be powered through an
external switch, such as a timer, or be connected to a
circuit which is regularly switched on and off by the
electricity provider.
Install the appliance in accordance with national rules
on electrical installation.
The control panel for the appliance must remain
switched on to ensure that the impressed current
anode can operate. Failure to comply with this
instruction may cause deterioration to the water
heater tank and cancel its warranty.
Wiring diagram:
See
Wiring diagram section (Installation and Service
Manual).
Connecting the appliance to the mains:
See
Electrical connections section (Installation and
Service Manual).
Fuse type and calibre:
See
Electrical connections section (Installation and
Service Manual).

1.1.4 Website
The installation manual can also be found on our
website.

7734712 - v01 - 22052019 5

1 Safety

1.1.5 Others

Danger
If flue gas is released or there is a refrigerant
leak:
Do not use a naked flame, do not smoke, do not
operate electrical contacts or switches (doorbell,
light, motor, lift, etc.).
Open the windows.
Switch off the appliance.
Avoid contact with the refrigerant. Danger of
frost injuries.
Locate the probable leak and seal it
immediately.

Warning
According to the appliance settings:
Do not touch the refrigerant connection pipes
with bare hands when the appliance is
operating. Risk of scalding.

Caution
Do not neglect to service the appliance.
In order to limit the risk of being scalded, a
thermostatic mixing valve must be installed on
the domestic hot water flow pipes.

1.2 Recommendations

Warning
Only a certified professional who has complete
suitable training is authorised to work on the
appliance and on the installation.

Warning
Before any work, switch off the power supply to
the appliance.

1.3 Liabilities

1.3.1 Manufacturer's liability

Our products are manufactured in compliance with the
requirements of the various Directives applicable. They
are therefore delivered with the marking and any
documents necessary. In the interests of the quality of
our products, we strive constantly to improve them. We
therefore reserve the right to modify the specifications
given in this document.
6 7734712 - v01 - 22052019
 1 Safety

Our liability as manufacturer may not be invoked in the

following cases:
Failure to abide by the instructions on installing and
maintaining the appliance.
Failure to abide by the instructions on using the
appliance.
Faulty or insufficient maintenance of the appliance.

1.3.2 Installer's liability

The installer is responsible for the installation and initial
commissioning of the appliance. The installer must
observe the following instructions:
Read and follow the instructions given in the manuals
provided with the appliance.
Install the appliance in compliance with prevailing
legislation and standards.
Carry out initial commissioning and any checks
necessary.
Explain the installation to the user.
If maintenance is necessary, warn the user of the
obligation to check the appliance and keep it in good
working order.
Give all the instruction manuals to the user.

1.4 Safety data sheet: refrigerant fluid R-134a

1.4.1 Product identification

Name of the refrigerant fluid: R–134a.
24 hr emergency call: 118

1.4.2 Hazard identification

Effects harmful to health:
The vapours are heavier than air and may lead to
asphyxia owing to reduced oxygen levels.
Liquefied gas: Contact with the liquid may cause
serious frost and eye injuries.
Product classification: This product is not classified as a
"hazardous preparation" according to European Union
regulations.

7734712 - v01 - 22052019 7

1 Safety

Caution
If the refrigerant is mixed with air, it may cause
pressure surges in the refrigeration pipes and
lead to an explosion and other hazards.

1.4.3 Composition of/Information on the

ingredients
Chemical nature: R-134a 1,1,1,2-Tetrafluoroethane.
Ingredients that may lead to hazardous situations:

Tab.1
Substance Concentration CAS number CE number Classification GWP
name
R-134a 100% 811-97-2 212-377-0 1430
1,1,1,2-Tetra­
fluoroethane

1.4.4 First aid

If inhaled:
Evacuate the subject from the contaminated area and
take him into the open air.
If feeling unwell: call a doctor.
In the event of contact with the skin:
Treat frost injuries like burns. Rinse with copious
amounts of tepid water, do not remove clothing (risk of
adhesion to the skin).
If skin burns appear, call a doctor immediately.
In the event of contact with the eyes:
Rinse immediately in water, holding the eyelids well
apart (at least 15 minutes).
Consult an ophthalmologist immediately.

1.4.5 Fire prevention measures

Appropriate extinguishing agents:
All extinguishing agents can be used.
Inappropriate extinguishing agents:
None to our knowledge. In the event of fire nearby,
use the appropriate extinguishing agents.
Specific hazards:
Pressure elevation: in the presence of air, an
inflammable mixture may form under certain
temperature and pressure conditions.

8 7734712 - v01 - 22052019

 1 Safety

Effect of heat: release of toxic and corrosive vapours.

Special intervention methods:
Cool the volumes exposed to heat with water spray.
Protection of the firemen:
Full self-contained breathing apparatus.
Complete body protection.

1.4.6 In the event of accidental spillage

Individual precautions:
Avoid contact with the skin and eyes.
Do not intervene without appropriate protective
equipment.
Do not inhale the vapours.
Evacuate the hazardous area.
Stop the leakage.
Eradicate all sources of ignition.
Ventilate the spillage area mechanically (risk of
asphyxia).
Cleaning / Decontamination:
Allow residual product to evaporate.

1.4.7 Handling
Technical measures:
Ventilation.
Precautions to be taken:
No smoking.
Prevent the build-up of electrostatic charges.
Work in a well ventilated place.

1.4.8 Personal protection

Respiratory protection:
If ventilation is insufficient: AX type cartridge mask.
In confined spaces: self-contained breathing
apparatus.
Hand protection:
Protective gloves in leather or nitrile rubber.
Eye protection:
Safety glasses with side protection.
Skin protection:
Clothing made mostly of cotton.
Industrial hygiene:

7734712 - v01 - 22052019 9

1 Safety

Do not drink, eat or smoke in the work place.

1.4.9 Considerations on disposal

Product waste:
Consult the manufacturer or the supplier for
information on recovery or recycling.
Soiled packaging:
Reuse or recycle after decontamination. Destroy in
authorised installations.
Warning
Disposal must be completed in compliance with
prevailing local and national regulations.

1.4.10 Regulations
Regulation (EU) No. 517/2014 of the European
Parliament and of the Council of 16 April 2014 on
fluorinated greenhouse gases and repealing
Regulation (EC) No. 842/2006.
Classified installations No. 1185.

10 7734712 - v01 - 22052019

 2 About this manual

2 About this manual

2.1 Symbols used in the manual

This manual uses various danger levels to draw attention to special

instructions. We do this to improve user safety, to prevent problems and to
guarantee correct operation of the appliance.

Danger
Risk of dangerous situations that may result in serious personal
injury.

Danger of electric shock

Risk of electric shock.

Warning
Risk of dangerous situations that may result in minor personal
injury.

Caution
Risk of material damage.

Important
Please note: important information.

See
Reference to other manuals or pages in this manual.

2.2 Abbreviations

DHW: Domestic Hot Water

LP: Low pressure
HP: High pressure
CFC: Chlorofluorocarbon
Qpr: Standby losses (Heat losses in the tank when it is switched off for
24 hours)
COP: Coefficient of performance
HP/HC: Peak rate/off-peak rate

7734712 - v01 - 22052019 11

3 Technical specifications

3 Technical specifications

3.1 Homologations

3.1.1 Certifications

Electrical Conformity / CE Marking

This product complies with the requirements of the following European

Directives and Standards:
Low Voltage Directive 2006/95/EC.
Relevant standard: EN 60335-1
Electromagnetic Compatibility Directive 2004/108/EC
Relevant standards: EN 55014-1:2006 + A1 + A2 / EN 55014–2:2006 +
A1 + A2

3.1.2 2014/68/UE Directive

This product conforms to the requirements of European Directive

2014/68/UE, article 4, paragraph 3, on pressure equipment.

3.1.3 Factory test

Before leaving the factory, each appliance is tested for the following:
Water tightness
Air tightness
Electrical safety.

3.2 Technical data

3.2.1 Specifications for the domestic hot water sensor

Important
Tolerance: +/- 5 Ohm

Tab.2 Domestic hot water sensor

Temperature (in °C) 10 20 25 30 40 50 60 70 80
Resistance (in ohms) 19691 12474 10000 8080 5372 3661 2536 1794 1290

3.2.2 Appliance specifications

Tab.3 General specifications

Model Unit SPC 200 SPC 300 SPC 300S
Heating time (15-51 °C) hours 5 7 7
Qpr kWh/24h 0.73 0.67 0.75
V40 litres 240 357 358
Capacity litres 215 270 260
Weight (empty) kg 92 105 123
R-134a refrigerant kg 1.45 1.45 1.45
R-134a refrigerant(1) tCO2e 2.075 2.075 2.075
Output (heat pump) with air W 1700 1700 1700
temperature = 15 °C
Immersion heater output W 1800 1800 1800
Operating pressure MPa (bar) 1.0 (10) 1.0 (10) 1.0 (10)
Power supply voltage V 230 230 230

12 7734712 - v01 - 22052019

 3 Technical specifications

Model Unit SPC 200 SPC 300 SPC 300S

Circuit breaker A 16 A, type K 16 A, type K 16 A, type K
Residual current protection 30 mA, type A 30 mA, type A 30 mA, type A
(RCD) device
(1) Quantity of refrigerant calculated in tonnes of CO2 equivalent.

Important
The R-134a refrigerant is contained in equipment that has been
hermetically sealed.

Tab.4 Ambient air performance

Model Unit SPC 200 SPC 300 SPC 300S
Load profile - L XL XL
Absorbed electrical power W 460 470 470
(heat pump)
COP(1) 2.73 2.93 2.68
COP(2) 3.34 3.50 3.27
Vmax (3)
litres 274 377 383
Pes(1)(4) W 39 44 48
Pes (2)(4)
W 25 35 32
(1) Value obtained with an air temperature of 7 °C and a water inlet temperature of 10 °C according to EN16147, based on LCIE Specifica­
tions No. 103-15/B:2011
(2) Value obtained with an air temperature of 15 °C and a water inlet temperature of 10 °C according to EN16147, based on LCIE Specifi­
cations No. 103-15/B:2011
(3) Maximum usable volume of hot water at a temperature of 40 °C
(4) Absorbed power at stabilised rate

Tab.5 Outside air performance

Model Unit SPC 200 SPC 300 SPC 300S
Load profile - L XL XL
Absorbed electrical power W 500 500 500
(heat pump)
COP(1) 3.16 3.11 2.9
Nominal air flow rate (∆P = 25 m3/h 320 320 320
Pa)
Vmax without back-up(2)(3) litres 275 378 383
Available volume
Pes (1)(4) W 27 27 32
Maximum length of the m 26 26 26
160 mm diameter air connec­
tion. (5)
(1) Value obtained with an air temperature of 7 °C and a water inlet temperature of 10 °C according to EN16147, based on LCIE Specifica­
tions No. 103-15/B:2011
(2) Maximum usable volume of hot water at a temperature of 40 °C
(3) For a set point temperature of 54 °C (SPC 200 and SPC 300) or 55 °C (SPC 300S)
(4) Power absorbed at stabilised rate
(5) The installation of the heat pump intake and backflow ducts adversely affects its performance

7734712 - v01 - 22052019 13

3 Technical specifications

Tab.6 Hydraulic back-up

Model Unit SPC 200 SPC 300 SPC 300S
Exchanger surface m2 - - 1.00
Continuous flow when ∆T = litres/h - - 955.6
35 K (1)(2)
Flow rate over 10 minutes l/10 min - - 420
when ∆T = 30 K (1)
(1) Domestic cold water inlet at 10 °C - Primary inlet temperature at 80 °C
(2) Output: 34.1 kW

3.2.3 Heating curve for the DHW tank as a function of the air
temperature

Fig.1 Scenario for complete heating of the DHW tank

20 Y MW-1000395-1
1 Heating time for a set point of 62 °C
18 2 Heating time for a set point of 51 °C
16 X Air temperature (°C)
14 Y Heating time (hours)
12
10
8
1
6
4 2
2
X
0
-5 0 5 10 15 20 25 30 35

3.2.4 Heating curve for the maximum domestic hot water set
point reached by the heat pump as a function of the air
temperature

Fig.2 X Air temperature (°C)

Y Y Maximum domestic hot water temperature (°C)
65°

55°
MW-1000396-1

51°

-5 0 5 7 10 X

14 7734712 - v01 - 22052019

 4 Description of the product

4 Description of the product

4.1 General description

The thermodynamic water heaters in the SPC range have the following
specifications:
Floor-standing thermodynamic storage water heater.
Thermodynamic unit extracting energy from unheated ambient air or
outside air.
Control panel with display of the volume of water heated and timer
programming.
Heat exchanger for connection to a boiler or a solar circuit (SPC 300S).
1.8 kW steatite immersion heater.
Enamelled tank protected by impressed current anode.
Very thick insulation (0 % CFCs).
The thermodynamic water heater is a hot water tank that can be heated
by:
The heat pump (up to 65 °C).
The immersion heater (Electrical back-up – AUTO and Boost mode) (up
to 70 °C).
The additional heat exchanger (SPC 300S)

4.2 Main components

Fig.3 1 Fan
2 Evaporator
3 Expansion valve
11 4 Solenoid valve for defrosting
1 5 Control system
12
2 6 Top domestic hot water temperature sensor
13
3 7 Impressed current anode
4 14 8 Safety thermostat
15 9 Steatite immersion heater
5 10 Cold water inlet
16
11 Air connection
12 HP pressure switch
13 LP pressure switch
14 Compressor
15 Pressure measurement point – High pressure (HP)
6 17 16 Ventilation grille
17 Domestic hot water outlet
18 Condenser
19 Middle domestic hot water temperature sensor

7
8
19

18

MW-1000361-2
10

7734712 - v01 - 22052019 15

4 Description of the product

4.3 Operating principle

The thermodynamic water heater uses unheated ambient air or outdoor air
to prepare domestic hot water.
The refrigerant circuit is a closed circuit in which the R-134a refrigerant
plays the role of an energy carrier.
The heat from the intake air is transferred to the refrigerant in the finned
heat exchanger at a low evaporation temperature.
The refrigerant is drawn in, in vapour form, by a compressor which raises it
to a higher pressure and temperature and sends it to the condenser. In the
condenser, the heat extracted in the evaporator and some of the energy
absorbed by the compressor are released into the water.
The refrigerant is depressurised in the thermostatic expansion valve and
then cooled. The refrigerant can again extract the heat contained in the
intake air from the evaporator.

Fig.4 1 Compressor
2 LP pressure switch
3 Condenser
4 Domestic hot water tank
5 Heat exchanger (SPC 300S model)
6 Steatite immersion heater
7 Impressed current anode
8 Temperature controller (heat pump)
9 Limiting thermostat
10 Temperature controller (immersion heater)
11 Sensor tube
18
12 Filter-drier
13 Thermostatic expansion valve
14 Ambient air thermostat
15 Evaporator
MW-1000360-1
16 Fan
17 Expansion valve bulb
18 HP pressure switch
19 Solenoid valve for defrosting

16 7734712 - v01 - 22052019

 5 Installation

5 Installation

5.1 Installation regulations

Caution
The appliance must be installed and maintained by a certified
professional in accordance with prevailing statutory texts and
codes of practice.

5.2 Package list

5.2.1 Standard delivery

The standard delivery includes:

a thermodynamic water heater
two dielectric unions (supplied in the documentation bag for the water
heater)
two lip gaskets
a condensates discharge hose
the Installation and Service Manual
the User Guide

5.2.2 Accessories

Tab.7
Description
90° galvanised elbow (diameter 160 mm)
Adapter sleeve (diameter 160 mm)
Insulated flexible ducting (diameter 160 mm - length 3 m)
Set of two attachment clamps (diameter 160 mm)
Wall duct (diameter 160 mm) + finishing plate
Aluminium outdoor grille (diameter 160 mm)
PPE pipe (diameter 160 mm, length 2x 1 m) + two sleeves
Two 90° elbows (PPE) (diameter 160 mm) + two sleeves
Two PPE sleeves (diameter 160 mm)
Black roof outlet (diameter 160 mm)
Waterproof base for flat roofs (diameter 160 mm)
Waterproof base for 25° to 45° pitched roofs (diameter 160 mm)
Reduced elbow kit
Connection kit for safety unit
Outdoor grille for air inlet and outlet (diameter 160 mm)

5.3 Storage and transport of the appliance

Caution
Have two people available.
Use a 3-wheel hand truck.
Handle the appliance with gloves.
The appliance cover cannot be used for transport operations.
The cover is not capable of withstanding heavy weights.
300 model: allow a minimum room height of around 2.15 m
200 model: allow a minimum room height of around 1.84 m.

The thermodynamic water heater must be stored and transported in its

packaging and not filled with water.
Permissible ambient transport and storage temperatures: -20 to +60 °C.

7734712 - v01 - 22052019 17

5 Installation

5.3.1 Transport

Important
We recommend shipping the appliance vertically.

It is possible to transport the appliance horizontally over short distances

and only whilst resting on its rear panel.
Fig.5
Caution
It is prohibited to stack or set down the appliance any of its other
sides, as this may lead to malfunctions or faults.

MW-1000371-1

5.4 Choice of the location

5.4.1 Data plate

Fig.6 The data plate must be accessible at all times.

The data plate identifies the product and provides the following
information:
Appliance type
Date of manufacture (Year - Week)
Serial number
MW-1000364-1

5.4.2 Position of the appliance

Caution
When installing the appliance, comply with the IP21 protection
rating.

Caution
Do not install the thermodynamic water heater in premises
exposed to gas, vapours or dust.
The appliance should not take in air containing solvents or
explosive substances.
The air taken in must in no circumstances be dusty.
Adequate thermal insulation in relation to adjacent living spaces
is recommended.
Temperature of the ambient air or of the air taken in by the heat
pump for optimum running: 10 to 35 °C.
Install the appliance in a dry, frost-free room at a minimum temperature
of 7 °C.
Install the appliance on a flat, solid surface.
Install the appliance on a base frame. The base frame must be able to
support the load sufficiently at all times.

18 7734712 - v01 - 22052019

 5 Installation

Recommended positions

Fig.7
1 2

MW-1000366-1
5

3 4

1 Garage Unheated room.

Enables recovery of the free energy released by your vehicle's engine when switched off af­
ter use or by household appliances in operation.
2 Via outside air Connection to the outside air may lead to overconsumption of electricity if the outside air
temperature falls outside the operating range.
Minimum distance to be observed for the ducts if intake and backflow are done on the same
façade: 700 mm.

Important
Risk of inconvenience in Eco operating mode: the immersion heater never
switches on. In addition, when the outdoor temperature is low, the output
of the thermodynamic water heater is reduced. The domestic hot water
set point temperature is not reached.
3 Habitable room Can obtain free heat from the garage.
4 Laundry room Unheated room.
Enables the dehumidification of the room and recovery of the energy wasted by washing
machines and tumble dryers.
5 Via crawl space Connection to the crawl space is possible if the volume is greater than 30 m3.
The crawl space must be frost-free (temperature > 1 °C)

Important
If the crawl space is poorly insulated, thermal losses from the home will
be greater.

Position of the appliance in a cupboard

Fig.8 1 With vertical connection kit: 800 mm x 800 mm - ducted installation

800 mini
Ø 160 2 With elbow connection: 1100 mm x 1100 mm - ducted installation
00 2
Ø 160 / 2
1 Be sure to make the air duct connections absolutely leak proof.
0
69

We strongly recommend installing the control system in the living room.

800
1100
0
30
82 8
59
6

MW-1000367-1 1100 mini

7734712 - v01 - 22052019 19

5 Installation

Accessibility

Fig.9 Tab.8
SPC 200 SPC 300 SPC 300S
V > 30m3 A (mm) 1690 2000 2000

To ensure adequate access and facilitate maintenance, allow sufficient

space around the appliance.
A
200 model: Allow a minimum distance of 0.4 m on both sides of the
appliance and a minimum room height of around 1.84 m for operation
without air ducts.
300 model: Allow a minimum distance of 0.4 m on both sides of the
appliance and a minimum room height of around 2.15 m for operation
without air ducts.
m 0
40 in. 15
0
69 00
0 06
m
4 0 in.
0
0
15
MW-1000365-1

Pipe length

Caution
Do not use accessories that may cause considerable pressure
drops (extraction grid with mosquito screen, partially extended
flexible duct, etc.). If the pressure drops are greater, the
performance of the appliance will be impaired and the charging
times increased.

Tab.9
Maximum length of the air connection m
Diameter 160 mm 26

Tab.10 Maximum length by accessory as a function of the pressure drops

Accessories Equivalent length in m
90° galvanised elbow (diameter 160 mm) 1.0
Reduction (200 mm x 160 mm) 1.5
Aluminium outdoor grille (diameter 160 mm) 8.0
Vertical connection kit 6.0
Outdoor grille for air inlet and outlet (diameter 160 mm) 1.0

Important
Add together all of the lengths of accessories used once or more
in the installation. The total length must not exceed 26 m for a
diameter of 160 mm.

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 5 Installation

5.4.3 Main dimensions

SPC 200 - SPC 300

Fig.10

690 2 C A

B
50°

1025
810 4

249

4(1) MW-1000357-2

1 Impressed current anode 4 Domestic hot water inlet G 3/4"

2 1.8 kW steatite immersion heater (1) Adjustable feet
3 Domestic hot water outlet G 3/4"

Tab.11
SPC 200 SPC 300
A 1690 2000
B 820 1133
C 1475 1785

For more information, see

Positioning the appliance, page 22
Unpacking the appliance, page 22

7734712 - v01 - 22052019 21

5 Installation

SPC 300S

Fig.11

2000
690 2 1375
4

5
1025 658
810 6
455
7
300
90
4(1) MW-1000358-1

1 Impressed current anode 5 Sensor tube for solar or boiler sensor

2 1.8 kW steatite immersion heater 6 Solar exchanger or boiler outlet G 3/4”
3 Secondary domestic hot water flow G 3/4” 7 Domestic cold water inlet G 3/4"
4 Solar exchanger or boiler inlet G 3/4” (1) Adjustable feet

5.5 Positioning the appliance

5.5.1 Unpacking the appliance

Caution
Remove all packaging materials. Check that the contents are
intact. If you notice a defect, do not use the appliance and contact
the supplier.

Fig.12

5
2 7
4
3 6

1 8

M003102-A

1. Remove the retaining screw from the fan grille.

22 7734712 - v01 - 22052019

 5 Installation

2. Turn the grille anticlockwise.

3. Remove the fan grille.
4. Unscrew the two screws from the compressor support part.
5. Remove the compressor support part and discard it.
6. Put the grille back in place.
7. Turn the grille clockwise to fit it back into its housing.
8. Put the retaining screws in place.

5.5.2 Positioning the appliance

See
Instructions affixed to the appliance packaging.

5.5.3 Levelling the appliance

Important
To improve condensate evacuation, we recommend tilting the
appliance slightly backwards.
1. Level the appliance using the adjustable feet.
Fig.13 (1) Adjustable feet, basic dimension 4 mm
Can be adjusted from 4 mm to 21 mm

B
3°

19
C003187-F

(1)
21

5.6 Water connections

Caution
Before attaching the water connections, it is essential to flush the
circuits to remove any particles which risk causing damage to
certain components (safety valve, pumps, valves, etc.). If flushing
has to be done using an aggressive product, neutralise the rinsing
water before disposing of it in the waste water network.

Important
Using hoses which are too short or too rigid encourages the
transmission of vibrations and the production of noises.
SPC 300S: Make all the hydraulic connections for the DHW tank using
flexible pipes.

5.6.1 Connecting the tank to the domestic water circuit

(secondary circuit)

During connection, all standards and corresponding local directives must

be respected.
Specific precautions

Before attaching the connections, flush the domestic water inlet pipes to
prevent metal or other particles from entering the appliance's tank.

7734712 - v01 - 22052019 23

5 Installation

Caution
Do not connect the domestic hot water connection directly to
copper pipes in order to prevent galvanic couplings in iron/copper
(risk of corrosion).
It is compulsory to fit the domestic hot water connection with a
dielectric union (provided).
Install the second dielectric union delivered on the domestic cold
water inlet.

Safety valve or safety unit

Caution
Germany: In accordance with the safety regulations, a safety
unit calibrated to 0.6 MPa (6 bar) must be fitted on the domestic
cold water inlet on the domestic hot water tank.
Belgium: In accordance with the safety regulations, a safety unit
calibrated to 0.7 MPa (7 bar), and approved by Belgaqua, must
be fitted on the domestic cold water inlet on the domestic hot
water tank.
Other countries: In accordance with the safety regulations, a
safety unit calibrated to 0.7 MPa (7 bar) must be fitted on the
domestic cold water inlet on the domestic hot water tank.
France: We recommend NF-marked hydraulic diaphragm safety units.
Integrate the safety valve in the cold water circuit.
Install the safety valve close to the water heater in a place with easy
access.
Sizing

The diameter of the safety unit and its connection to the water heater must
be at least equal to the diameter of the domestic cold water inlet on the
water heater.
There must be no cut-off devices between the safety valve or unit and
the water heater.
The discharge pipe in the safety valve or unit must not be blocked.
To prevent the flow of water being hindered or obstructed in the event of a
pressure surge:
The discharge pipe from the safety unit must have a continuous and
sufficient gradient, and its cross section must be at least equal to the
cross section of the opening of the safety unit outlet (to prevent the flow
of water being hindered if the pressure is too high).
The cross section of the discharge pipe from the safety unit must be at
least equal to the cross section of the opening on the safety unit outlet
Isolation valves

Hydraulically isolate the primary and domestic circuits with isolation valves
to facilitate maintenance on the domestic hot water tank. The valves make
it possible to carry out maintenance on the domestic hot water tank and its
components without draining the entire installation.
These valves are also used to isolate the domestic hot water tank when
conducting a pressurised check on the tightness of the installation if the
test pressure is greater than the admissible operating pressure for the
domestic hot water tank.
Connecting the domestic cold water

Connect to the cold water supply according to the hydraulic installation

diagram.
The components used for the connection to the cold water supply must
comply with the prevailing standards and regulations in the country
concerned.
Install a water drain in the boiler room and a funnel-siphon for the safety
unit.

24 7734712 - v01 - 22052019

 5 Installation

Fit a non-return valve to the domestic cold water circuit.

Install a dielectric union on the domestic cold water inlet.
Pressure reducer

If the supply pressure exceeds 80% of the safety valve or unit calibration
(e.g.: 0.55 MPa/5.5 bar for a safety unit calibrated to 0.7 MPa/7 bar), a
pressure reducer must be located upstream of the appliance.
Install the pressure reducer downstream of the water meter in such a way
as to ensure the same pressure in all of the system's pipes.
Measures to take to prevent hot water flow return

Fit a non-return valve to the domestic cold water circuit.

5.6.2 Connecting to a boiler (SPC 300S model)

Caution
Before attaching the water connections for the heating circuit and
domestic hot water tank heat exchanger, the circuits must be
flushed to remove any particles which might damage the
components (safety valve, pumps, valves, etc.).

Fig.14

MW-C003613-2

A Boiler 7 Automatic air vent

1 Heating flow 9 Isolation valve
2 Heating return 11 Heating pump
3 Safety valve 16 Expansion vessel
4 Pressure gauge 17 Drain valve

7734712 - v01 - 22052019 25

5 Installation

18 Filling the heating circuit 29 Pressure reducer

21 Outside sensor 30 Safety unit
22 Boiler sensor 33 Domestic hot water sensor
24 Domestic hot water tank exchanger primary outlet 50 Disconnector
25 Domestic hot water tank exchanger primary inlet 51 Thermostatic valve
26 Booster pump 52 Differential valve (only with module fitted with a
27 Non-return valve three-speed pump)
28 Domestic cold water inlet with dielectric union on the 57 Domestic hot water outlet with dielectric union
tank 90 Anti-thermosiphon loop

5.6.3 Connecting to solar collectors (SPC 300S model)

Caution
Limit the domestic hot water temperature to 60 °C.

Fig.15

MW-C003612-2

4 Pressure gauge 80 Domestic hot water tank solar exchanger primary

27 Non-return valve inlet
28 Domestic cold water inlet with dielectric union on the 84 Stop valve with releasable non-return valve
tank 85 Primary solar circuit pump
29 Pressure reducer 87 Safety valve calibrated to 6 bar
30 Safety unit 88 Solar expansion vessel
57 Domestic hot water outlet with dielectric union 89 Heat-transporting fluid container
61 Thermometer 90 Anti-thermosiphon loop (= 10 x pipe diameter)
79 Domestic hot water tank solar exchanger primary 109 Domestic hot water thermostatic mixing valve
outlet 112a Solar sensor probe
112b Solar domestic hot water sensor

26 7734712 - v01 - 22052019

 5 Installation

114 Primary solar circuit filling and draining device 130 Manual venting degasser
126 Solar regulator 131 Solar collectors
129 Insulation 132 Complete solar station with solar control system

5.7 Condensate discharge

Fig.16 1. Fit a siphon into the condensate discharge duct.

Caution
If no siphon is fitted, there is a risk of problems with the
condensate discharge when the compressor is running: air may
be drawn in by the condensate discharge.
2. Attach the run-off collector.

min. 200
C003656-D

5.8 Electrical connections

5.8.1 Recommendations

Warning
Only qualified professionals may carry out electrical
connections, always with the power off.

Earthing must comply with the prevailing installation standards.

Power the appliance via a circuit that includes a type-D curve omnipolar
16 A circuit breaker with a contact opening distance of 3 mm or more.
The water heater is delivered with a 3G cable. If the power supply cable is
damaged, it must be replaced by the manufacturer, its after sales service
or persons with similar qualifications in order to prevent any danger.
The electricity supply is connected to the mains by connection cable (~230
V, 50 Hz) and electrical socket.
The control panel for the appliance must remain switched on to ensure
that the impressed current anode can operate. Failure to comply with this
instruction may cause deterioration to the water heater tank and cancel its
warranty.

7734712 - v01 - 22052019 27

5 Installation

5.8.2 Connecting the back-up authorisation - X7 connector

(SPC 300S model)

Fig.17

Backup

C003618-C

1. Remove the front cover.

2. Access the PCB.
3. Connect the Boiler backup connector (boiler back-up).

See
To set the boiler input, refer to the boiler instruction manual.

28 7734712 - v01 - 22052019

 5 Installation

5.8.3 Connection with timer programming

Fig.18

1 2
1
538 kW/h
0

15 / 45 A
C1 C2 500 mA

L
3 4 4 N
30
mA

40 A TEST 2A 16 A

C003615-E

1 Counter 3 AC-type differential switch

2 Connection circuit breaker 4 Circuit breaker

Easy to install.
Opt for timer programming to benefit from the peak/off-peak rate tariff.

7734712 - v01 - 22052019 29

5 Installation

5.8.4 Connection with timer programming and photovoltaic

signal

Fig.19

3 4 4
5 30 L
mA
N
40 A TEST 2A 16 A
X11-2 HP/HC
X11-1 LINE
A
PV-S
DC AC
6

MW-3000639-1

3 AC-type differential switch 6 Inverter

4 Circuit breaker A 230 V voltage cable, 1.5 mm2
5 Photovoltaic panel

1. The heat pump and the electrical back-up are authorised to operate
according to the timer programming.
2. When the photovoltaic signal is active, the tank set point is 62 °C, and
can be adjusted via the parameter.
3. If the photovoltaic signal is active when the contact is open, set the
parameter to 3.
4. If the photovoltaic signal is active when the contact is closed, set the
parameter to 4.

30 7734712 - v01 - 22052019

 5 Installation

5.9 Electrical diagram

Fig.20

2
X6
1

X7
R6
PCU-195

X-HC
2

2
1

1
3
R5

2
6

2
NO

4
COM
4
P

R4

1
1

5
NC
2

X5
P
θ°C

4
2

3
1

2
5
2

3
S5

R3

1
2
θ°C
2

X8
2

1
S4

5
1
3
2

KLIXON
R1

2
HP

4
1
1
X1

SPL1
2

X-B1
1
TA
2

6
2
2

1
1

TS
4

3 4
X3
θ°C

R2
S2

2
2

1
X4
θ°C

3
2
S1
2

N
1

230 V
MW-SPC003402-2

1 Control panel S4 Evaporator sensor

2 Fan S5 Room temperature sensor
3 Solenoid valve for defrosting SPL1 Splice
4 Compressor TA Impressed current anode
5 Condenser ST Safety thermostat
6 Immersion heater X1 Connecting the impressed current anode
Earth X3–S2 Middle domestic hot water temperature sensor
230 V 230 V power supply X4–S1 Top domestic hot water temperature sensor
L Live X5 Room temperature sensor, evaporator, pressure
N Neutral switch
P Pressure switch X6 Control panel connection
R1–R6 Relay X7 Hydraulic back-up control terminal board

7734712 - v01 - 22052019 31

5 Installation

X8 Control terminal board X-HC Programmable input (off-peak/peak rate) –

X-B1 Electrical back-up control terminal board Caution: 230 V

5.10 Filling the thermodynamic water heater

Fig.21 1. Turn on a hot water tap.

2. Completely fill the water heater via the cold water inlet pipe, leaving
the hot water valve open.
When the water flows out from the hot water tap, the appliance is
full.
3. Close the hot water tap.
MW-1000593-2

32 7734712 - v01 - 22052019

 6 Commissioning

6 Commissioning

6.1 Control panel description

6.1.1 Description of the keys

Fig.22 – Browse keys

MODE Selection key for the operating modes
MENU Access key for the various menus

MODE MENU

C003197-B

6.1.2 Description of the display

Fig.23 Available quantity of domestic hot water (accord­

ing to the set point)
Setting the parameters
14
1
! Alarm
12
2
Comfort period active or Clock programming
3

34
4
: Display of the date (day:month) or the time
°C
(hour:minutes)
5
6
7 1234567 Display of the day of the week (1 = Monday, 2 =
MODE MENU Tuesday, ... 7 = Sunday)
Numeric display
Optimisation function active
Number of baths available (40 °C)
MW-1000339-1
ltrs Quantity of water (litres)
Decreases the setting values
Increases the setting values
Confirm key
reset Resets the control system after a fault
Automatic mode or Comfort mode
Eco mode
Boost mode
days Holiday mode
+ Comfort mode with Boost function via the off-peak
rate input or alternative energy source (e.g. photo­
voltaics)
+ Eco mode with Boost function via the off-peak rate
input or alternative energy source (e.g. photovolta­
ics)
+ days Holiday mode with Boost function via the off-peak
rate input or alternative energy source (e.g. photo­
voltaics)

Domestic hot water production mode indicator

The main display indicates the domestic hot water production mode.

7734712 - v01 - 22052019 33

6 Commissioning

Tab.12
Display Domestic hot water production Description
Heat pump The two sections of the tank flash simultaneously when domestic hot
water production is provided by the heat pump
MW-C003487-03

Electrical back-up The right-hand section of the tank flashes when domestic hot water
production is provided by the electrical back-up
MW-C003484-03

Hydraulic back-up The left-hand section of the tank flashes when domestic hot water
production is provided by the hydraulic back-up (SPC 300S model)
C003485-B

Heat pump and electrical back- The two sections of the tank flash in turn when domestic hot water
up or hydraulic back-up production is provided by the heat pump, the electrical back-up or
MW-C003486-03 the hydraulic back-up (SPC 300S model).

Indicator for the available volume of water

Fig.24 During production of domestic hot water, the display indicates the number
of baths available and the filling level for the tank (available quantity of hot
water).
14

The number of baths is calculated based on a domestic hot water

temperature of 40 °C.
12
MW-1000363-1

34 The tank is filled based on the set point temperature.

Set the and parameters according to the appliance model.

For more information, see

Modifying the installer parameters, page 38

6.1.3 Browsing in the menus

Fig.25
1. Press the MENU key.
MW-1000341-1
The menu is displayed.
2. Use the and keys to scroll through the menus (see table
14

12
3
14
below).
34

12
3. Press the MODE key ( ) to go into the selected menu.
4. Press the MENU key to return to the previous display.
5. Press the MENU key once to return to the main display.
34

MODE MENU

MODE MENU
1

Accessing the menu Menu Description

1 x MENU Measurements menu
1x Setting the time and date
2x Modifying a timer program
3x Counters
4x Setting parameters
5x Error history
6x Installer parameters

For more information, see

Reading out measured values, page 36
Counters, page 37
Log of messages and faults, page 51
Modifying the installer parameters, page 38

34 7734712 - v01 - 22052019

 6 Commissioning

6.2 Points to check before commissioning

1. Check that the thermodynamic water heater is full of water.

2. Check the tightness of the connections.
3. Check that the safety devices are working correctly.
4. Check the operating mode.

6.3 Commissioning the appliance

Caution
Initial commissioning must be performed by a qualified
professional.

Caution
After positioning the appliance, wait one hour before starting it up.

Carry out the commissioning operations in the following order:

1. Connect to the mains.
2. Check that no error codes or messages are shown on the display.
The domestic hot water temperature set point is factory-set to 55 °C
in comfort mode.
3. Select the BOOST ( ) operating mode.
If domestic hot water production is required, the compressor starts
up after 120 seconds.

For more information, see

Selecting the operating mode, page 35

6.4 Checks and settings after commissioning

1. Check the tightness of the connections.

2. Check the temperature on the two domestic hot water temperature
sensors to ensure that the appliance is working correctly.
If the readout values are incorrect, check the positioning of the
sensors in the sensor tube.
3. A few days after commissioning of the appliance, carry out a visual
inspection to check for any leaks in the water system or any
blockages in the condensates run-off.

6.5 Selecting the operating mode

The operating mode is indicated on the main display.

7734712 - v01 - 22052019 35

6 Commissioning

Fig.26 1. To change the operating mode, press the MODE key several times,
until the symbol corresponding to the required operating mode is
shown on the display.
14

12

34

C003493-B

Tab.13
Display Operating mode Description
Automatic or comfort Comfort program active
The production of domestic hot water is ensured by the heat pump and, if neces­
sary, by the electrical back-up (+ hydraulic back-up for the SPC 300S model).
If insufficient domestic hot water has been produced by the compressor at the
end of an adjustable time delay (factory setting: 5 hours - parameter ), the
back-ups start.
Eco Reduced program active
The production of domestic hot water is ensured by the heat pump only.
After the compressor stops, the display showing the available quantity of domes­
tic hot water may not be full ( ).
Boost Forced operation active
The production of domestic hot water is ensured by the heat pump and the back-
up simultaneously for a defined period (factory setting: 6 hours).
days Holiday Holiday period
Production of domestic hot water is stopped.
The domestic hot water temperature remains at 10 °C.

6.6 Reading out measured values

6.6.1 Measurements menu

Fig.27
1. Press the MENU key once.
The menu is displayed.
14
2. Press the MODE key to go into the Measurements menu.
The menu is displayed.
12

34

MODE MENU

1x C003206-D
2x
3x
.
.
.

36 7734712 - v01 - 22052019

 6 Commissioning

3. Use the and keys to switch between measurements.

Parameters Description Unit
Top domestic hot water temperature sensor °C
Middle domestic hot water temperature sensor °C
Room temperature sensor °C
Evaporator temperature sensor °C
Status of the programmable input (electricity tariff):
HP1: Contact closed (peak rate)
HC0: Contact open (off-peak rate)
Operating status/sub-status of the control system sequence
Back-up set point °C
Compressor set point °C

6.6.2 Counters

Displaying the counters

1. Press the MENU key once.
The menu is displayed.
2. Press the key three times.
The menu is displayed.
Fig.28 3. Press the MODE key to go into the Counters menu.
The number for the counter is shown on the right-hand side of the
screen.
14

12

34

MODE MENU
C004186-A

Fig.29 4. Use the and keys to switch between counters (see table
below).
5. To exit this menu, press the MODE key.
14
1 6. To return to the main display, press the MENU key.
12

34

MODE MENU

C003210-C

Tab.14
Counter Description Unit
1 Total energy consumed for the production of domestic hot water (calculated value) kWh
2 Electrical energy consumed by the compressor over the last 24 hours (calculated value). Wh
The counter is reset at 00:00 every day.
3 Electrical energy consumed by the electrical back-up over the last 24 hours (calculated val­ Wh
ue).
The counter is reset at 00:00 every day.
4 Number of hours of operation of the hydraulic back-up h
5 Number of hours powered on h
6 Instantaneous output (calculated value) W

7734712 - v01 - 22052019 37

6 Commissioning

Resetting the counters to zero

1. Press the MENU key once.
The menu is displayed.
Fig.30 2. Press the key three times.
The menu is displayed.

14

12

34

MODE MENU
C004186-A

3. Press the MODE key to go into the Counters menu.

The number for the counter is shown on the right-hand side of the
14
1 screen.
12 4. Use the and keys to switch between counters.
5. Press the reset key to reset the meter displayed to zero.
34

MODE MENU

C003210-C

Fig.31 6. Confirm with the MODE key.

7. To exit this menu, press the MODE key.
8. To return to the main display, press the MENU key.
14

12

34

MODE MENU
C004187-B

6.7 Modifying the installer parameters

Caution
Modification of the factory settings may adversely affect the
operation of the appliance.

6.7.1 Accessing the parameters

To prevent handling errors, access to this menu requires the use of the
access code.
Fig.32 1. Press the MENU key once.
The menu is displayed.

14

12
3

34

MODE MENU

C003203-E
1x

38 7734712 - v01 - 22052019

 6 Commissioning

Fig.33 2. Press the key six times.

The menu is displayed.
3. Enter the access code using the or keys.
14

12

34

MODE MENU
C004192-A

Fig.34 4. Press the MODE key to access the menu.

The parameter appears.
5. Scroll through the parameters using the or keys.
6. To edit a parameter, press the MODE key.
14

12
The parameter value flashes.
34 7. Adjust the required value using the or keys.
8. Confirm the value with the MODE key.

MODE MENU

C003211-B

6.7.2 List of parameters

Tab.15 List of parameters

Parameter Description Adjustment Factory setting
range
Domestic hot water set point in Auto mode 25 to 70 °C 55 °C
Domestic hot water set point in Eco mode 25 to 65 °C 55 °C

7734712 - v01 - 22052019 39

6 Commissioning

Parameter Description Adjustment Factory setting

range
Peak rate/off-peak rate programmable input (X11): 0–6 0
0 = Use the timer programmes.
1 = The peak rate/off peak rate timer tariff input is used for the produc­
tion of domestic hot water. Production of domestic hot water is not man­
aged by the timer programming (HP1 = not authorised => contact
closed, HC0 = authorised => contact open).
2 = The peak rate/off peak rate timer tariff input is used for the produc­
tion of domestic hot water. Production of domestic hot water is not man­
aged by the timer programming (HP1 = not authorised => contact open,
HC0 = authorised => contact closed).
3 = Domestic hot water production is managed by the timer program­
ming. The Boost function is activated by the peak rate/off-peak rate timer
tariff input. The Boost function is handled by the heat pump only, the
back-ups are blocked. The temperature of the Boost mode is defined by
the parameter (HP1 = Boost deactivated => contact closed, HC0
= Boost activated => contact open). Note: this Boost function does not
correspond to the Boost operating mode which may be activated by the
MODE key.
4 = Domestic hot water production is managed by the timer program­
ming. The Boost function is activated by the peak rate/off-peak rate timer
tariff input. The Boost is handled by the heat pump only, the back-ups
are blocked. The temperature of the Boost mode is defined by the
parameter (HP1 = Boost activated => contact open, HC0 = Boost de­
activated => contact closed). Note: this Boost function does not corre­
spond to the Boost operating mode which may be activated by the
MODE key.
5 = Domestic hot water production is managed by the timer program­
ming. The Boost function is activated by the peak rate/off-peak rate timer
tariff input. The Boost is handled simultaneously by the heat pump and
by the back-ups. The temperature of the Boost mode is defined by the
P07 parameter. (HP1 = Boost deactivated => contact closed, HC0 =
Boost activated => contact open). Note: this Boost function does not cor­
respond to the Boost operating mode which may be activated by the
MODE key.
6 = Domestic hot water production is managed by the timer program­
ming. The Boost function is activated by the peak rate/off-peak rate timer
tariff input. The Boost is handled simultaneously by the heat pump and
by the back-ups. The temperature of the Boost mode is defined by the
P07 parameter. (HP1 = Boost activated => contact open, HC0 = Boost
deactivated => contact closed). Note: this Boost function does not corre­
spond to the Boost operating mode which may be activated by the
MODE key.
Automatic switch to summer time (last Sunday in March) and to winter time 0 – 1 1
(last Sunday in October):
0 = Function not active (for countries where the time changes on other
dates or daylight saving time is not used)
1 = Function active
Domestic hot water set point for the Boost function when the Boost is con­ 40 to 70 °C 62 °C
trolled by the peak rate/off-peak rate programmable input ( parame­
ter).
Info: the domestic hot water set point for the Boost function accessible us­
ing the MODE key is defined by the parameter.
Protection by impressed current anode 0–1 1
0 = Deactivation
1 = Activation
Volume of water contained in the tank (x 10 l) 6 - 255 27
Volume of water to fill one bath (litres). This setting is used to display the 10 - 255 120
number of baths available.
Duration of Boost mode when activated by the MODE key (in hours) 1 - 10 6

40 7734712 - v01 - 22052019

 6 Commissioning

Parameter Description Adjustment Factory setting

range
Type of back-up: choice of back-up and configuration of the X7 output (R6) 0 – 2 1
that is used to authorise an additional external generator (e.g. condensing
gas boiler). If 0 or 2 is selected, the integrated electrical back-up is no lon­
ger active and cannot be added in parallel.
0 = None
1 = Electrical back-up
2 = Hydraulic back-up
Time delay for the electrical or hydraulic back-up in Automatic mode 0 - 10 5
(hours)
If, once the defined duration has elapsed, the temperature at the middle
domestic hot water sensor is at least 6 °C less than the domestic hot water
set point ( ), the back-up starts up. The back-up stops once
the temperatures at the middle and upper domestic hot water sensors have
reached the domestic hot water set point ( ).
Info: the back-up starts immediately when the compressor is malfunction­
ing or if the heat pump limit temperatures are reached.
Compressor start-up time (seconds) 60 - 255 120
If there is a request for production of domestic hot water, the fan starts at
half speed and the defrosting solenoid valve is activated for the time de­
fined here.
Activation of optimised mode. The domestic hot water tank is charged by 0–1 0
optimal use of the heat pump and hydraulic back-up.
0 = Optimised mode deactivated, the display is normal and the
and parameters cannot be accessed.
1 = Optimised mode activated, is displayed and the and
parameters can be accessed.
Anti-legionella function. When this function is activated, the tank is super 0–1 0
heated every Saturday from 01:00 to 06:00 to the temperature defined by
the P32 parameter. The compressor and the back-up function simultane­
ously during this period.
0 = Deactivated
1 = Activated outside of the holidays
2 = Always activated
Compressor cut-off hysteresis in relation to the set point defined by 5 - 15 10
for the lower domestic hot water temperature sensor (only in Auto or Boost
mode)
It authorises an increase in the maximum domestic hot water temperature
(lower sensor - parameter) allowing recharging based on the set­
point ( ) to be fulfilled when the middle sensor has not yet reached
the set point.
Maximum domestic hot water temperature for compressor cut-off (°C) (low­ 35 - 50 45
er sensor - only in Auto or Boost mode)
Domestic water heating in Auto or Boost modes is stopped when the mid­
dle sensor has reached the set point ( ) and the lower sensor has
reached the maximum temperature. See also the parameter.
Minimum duration of compressor operation (minutes) when recharging do­ 3 - 10 3
mestic hot water
When the set point is reached during the minimum compressor op­
eration duration, the fan turns at half speed until the end of the duration.
Anti-short-cycle period between two compressor start-ups (minimum pause 5 - 10 5
time) (minutes)
Hydraulic back-up: 0–1 0
0 =R6 contact closed if there is a demand for the hydraulic back-up
1 =R6 contact open if there is a demand for the hydraulic back-up
This setting determines the status of the X7 input (R6), when the
back-up must be authorised.
Domestic hot water set point used for anti-legionella function 55 to 70 °C 65 °C

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6 Commissioning

Parameter Description Adjustment Factory setting

range
Output of the immersion heater. Unit: 0.1 kW 16 - 255 18
Water temperature difference between the tank temperature and the set 1 to 15 °C 3 °C
point before the restart of the compressor
(1) Minimum room temperature for compressor operation -5 to 20 °C -5 °C
(1) Maximum room temperature for compressor operation 20 to 35 °C 25 °C
(1) if =1

6.7.3 Control system sequence

Tab.16
Status Sub-status Operating
0 0 Appliance off
7 Post-operation of the compressor
1 1 Anti-cycling activated
2 Wait for the start-up condition for domestic hot water production
3 Start-up of the fan and the defrosting valve
2 5 Compressor start-up
6 Defrosting
3 1 Anti-cycling activated
4 Back-up starts
7 Post-operation of the compressor
4 5 Compressor start-up
6 Defrosting
9 – Lockout present

6.7.4 Restoring the factory settings

Fig.35 1. Simultaneously press the and keys for 5 seconds.

The rSt menu is displayed.

14

12
3

34

MODE MENU

C003495-C

Fig.36 2. Press the MODE key to restore the factory settings for all the
parameters.

14

12

34

MODE MENU
C004193-A

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 7 Decommissioning

7 Decommissioning

7.1 Shutting down the installation

Warning
Do not switch off the appliance in order to ensure protection
against corrosion. Failure to comply with this instruction may
cause deterioration to the water heater tank and cancel its
warranty.
The appliance's frost protection remains active.

7.2 Frost protection

During extended periods of absence (holidays), program the

corresponding number of days.
The temperature of the water contained in the tank is maintained at 10°C.

See
User Guide.

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8 Maintenance

8 Maintenance

8.1 General instructions

Caution
The appliance must be installed and maintained by a certified
professional in accordance with prevailing statutory texts and
codes of practice.

Caution
Before working on the appliance, ensure that it is switched off and
safe.

Caution
Check the discharge from the compressor capacitor.

Caution
Before working on the refrigeration circuit, switch off the appliance
and wait a few minutes. Certain items of equipment such as the
compressor and the pipes can reach temperatures in excess of
100 °C and high pressures, which may cause serious injuries.

Important
When the appliance is powered off, the fan continues to run for
approximately one minute, due to inertia.

Maintenance operations are important for the following reasons:

To guarantee optimum performance
To extend the life span of the equipment
To provide an installation which offers the customer optimum comfort
over time.

Caution
The control components must never come into contact with water.
Before starting any cleaning, disconnect the mains power supply
plug or power off the appliance.

8.2 Standard inspection and maintenance operations

8.2.1 Refrigerant circuit

No maintenance is required on the refrigerant circuit in the thermodynamic

water heater.

8.2.2 Check the hydraulic circuit

1. Check the tightness of the hydraulic connections.

8.2.3 Aeraulics

Cleaning the evaporator

Danger
Risk of injury on the sharp-edged fins.

Caution
Do not distort or damage the fins.

1. Clean the evaporator at regular intervals using a soft-haired brush.

2. If the fins are bent, straighten them carefully using an adapted comb.

44 7734712 - v01 - 22052019

 8 Maintenance

Cleaning the fan

1. Check the cleanliness of the fan once a year. Clogging by dust and
other particles impairs the heat pump's performance.

8.2.4 Impressed current anode

No maintenance operations are required on an impressed current anode.

Important
The control panel for the appliance must remain switched on to
ensure that the impressed current anode can operate. Failure to
comply with this instruction may cause deterioration to the water
heater tank and cancel its warranty.

8.2.5 Checking the safety valve or safety unit

Operate the safety valve or safety unit at least once a month to check that
it is running correctly. This check helps to protect against any pressure
surges that may damage the water heater.

Caution
Failure to comply with this maintenance rule may cause damage
to the water heater tank and invalidate its warranty.

8.2.6 Descaling the thermodynamic water heater

Important
Fit a new leak tight gasket to the inspection hatch.

In hard water regions, you are recommended to ask the installer to

descale the water heater exchanger once a year in order to maintain its
performance levels.
Fig.37 1. Shut off the domestic cold water inlet.
2. Drain the water heater.
3. Turn on a hot water tap.
4. Open the drain valve on the cold water inlet at the bottom of the
domestic hot water tank.
5. Remove the insulation from the inspection hatch.
6. Take out the domestic hot water sensor.
7. Remove the inspection hatch (13-mm spanner).
8. Until December 2015: Remove the two bulbs from the safety
thermostat.
From January 2016: Take out the safety thermostat bulb.
9. Remove the limescale deposited in the tank in the form of sludge or
strips.
Leave the limescale on the walls of the tank: it provides effective
protection against corrosion and enhances the water heater's
insulation.
10. Then replace all the parts in reverse order.

Important
Each time it is opened, the lip gasket must be replaced to
M002839-B
guarantee tightness. Place the positioning lug on the gasket
towards the outside of the water heater.
11. After each intervention, ensure that the installation is watertight.

Important
The screws must be tightened to 6 Nm + 1/-0. Use a torque
wrench.

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8 Maintenance

8.2.7 Cleaning the condensate discharge pipe

A dust obstruction may cause poor condensates flow or even a risk of

excessive accumulation of water.
1. Check the cleanliness of the condensate discharge pipe.

8.3 Accessing the bottom inspection trap

Important
Have a new lip gasket and a new retainer ring on hand for the
inspection hatch.
Fig.38 1. Disconnect the power supply.
2. Drain the water heater.
3. Open a hot water tap.
4. Open the valve on the safety unit.
5. Move the appliance to the repair position (1).
1 85° 6. Check the extent of scaling in the tank and on the exchanger.
Leave the limescale on the walls of the tank: it provides effective
protection against corrosion and enhances the water heater's
insulation.
Remove limescale deposits from the bottom of the tank.
Remove limescale deposits from the exchanger to guarantee its
performance.
7. Remount the unit.

Caution
Each time it is opened, the lip gasket + retainer ring unit must be
replaced to guarantee a tight seal. Place the positioning lug on the
gasket towards the outside of the water heater.
8. After reassembly, check the tightness of the lower flange.

Important
The screws for the inspection hatch must be tightened to 6 N·m
C003190-C

+1/-0. Use a torque wrench.

8.4 Maintenance form

Tab.17
No. Date Checks made Remarks By Signature

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 8 Maintenance

No. Date Checks made Remarks By Signature

7734712 - v01 - 22052019 47

9 Troubleshooting

9 Troubleshooting

9.1 Messages (bxx or Exx-type codes)

9.1.1 type error codes

In the event of a disruption, the control panel displays a message and a

corresponding code.
1. Make a note of the code displayed.
The code is important for the correct and rapid diagnosis of the type
of malfunction and for any technical assistance that may be needed.
2. Disconnect then reconnect the mains power cable. The appliance will
only resume operation when the malfunction has been resolved.
3. If the code is displayed again, resolve the problem by following the
instructions in the table below.
If the causes of the problem are still present after several attempts
at automatic start-up, the appliance goes into "Lockdown" mode
(also called "Malfunction").

For more information, see

Messages (-type codes)), page 50

List of type codes

Tab.18
Code Description Checking / solution
Parameters error on the PCU PCB. Reset the parameters.

See
Restoring factory settings section

Pressure switch alarm. Check the compressor power supply.

Check the pressure switch connection.
Important
Domestic hot water production is en­
sured by the back-up, if the back-up is
authorised.
Maximum domestic hot water temperature excee­ Check the top domestic hot water sensor con­
ded when domestic hot water production is not nection.
guaranteed (by either the compressor or the back- Check that the back-up is not permanently actu­
up). ated.
The room temperature is above 35 °C. The com­ Modify the following parameters in line with the
pressor is outside of its operating range. recommendations in the manual.
The compressor will ensure production of do­
Important mestic hot water once the room temperature is
Domestic hot water production is en­ below 35 °C.
sured by the back-up, if the back-up is
authorised
The room temperature is less than - 5 °C Modify the following parameters in line with the
recommendations in the manual.
Important The compressor will ensure production of do­
Domestic hot water production is en­ mestic hot water once the room temperature ex­
sured by the back-up, if the back-up is ceeds -5 °C.
authorised
The bottom DHW temperature sensor is not Reset the control panel.
present

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 9 Troubleshooting

Code Description Checking / solution

The top domestic hot water temperature sensor Bad connection
has short-circuited
Check whether the sensor is connected.
Check the connection and the connectors.
Check that the sensor has been fitted properly.
Defective sensor
Check the Ohmic value of the sensor.
Replace the sensor if necessary.
The top domestic hot water temperature sensor is Bad connection
open
Check whether the sensor is connected.
Check the connection and the connectors.
Check that the sensor has been fitted properly.
Defective sensor
Check the Ohmic value of the sensor.
Replace the sensor if necessary.
The impressed current anode is in open circuit. Check that the connection cable between the
SCU PCB and the anode is not severed
Check that the anode is not broken
Check that the water heater tank is filled with
water

Important
Production of domestic hot water is
stopped for 72 hours but may be re­
started by pressing the RESET key
Protection against corrosion is not
guaranteed
The impressed current anode has short-circuited. Check that the connection cable between the
PCU PCB and the anode has not short-circuited
Check that the anode has not short-circuited

Important
Production of domestic hot water is
stopped for 72 hours but may be re­
started by pressing the RESET key
Protection against corrosion is not
guaranteed
Measurement error on the domestic hot water tem­ The two sensors do not measure the same value
perature sensors
Check the location of the sensors
Important
This message is only displayed on
initial commissioning
This message disappears after 10
minutes or when you press the
key
No communication between the control panel and Check the wiring between the control panel and
the PCU PCB. the PCU PCB.
No communication between the control panel and Check the wiring between the control panel and
the PCU PCB. the PCU PCB.
Activation of optimised mode. The domestic hot water tank is charged by optimal
use of the heat pump and hydraulic back-up.

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9 Troubleshooting

9.1.2 Messages ( -type codes))

Fig.39 1. The display shows:

The symbol (!)
The reset symbol
The malfunction code (for example ).
2. After resolving the malfunction, press the reset key for two seconds.
14

12 If the error code is still shown, find the cause in the table of errors
34
and apply the solution.

MODE MENU

2"
C003212-B

List of type codes

Tab.19
Code Description Checking / solution
The parameter storage unit for the PCB is defec­ Replace the PCU PCB.
tive
The middle domestic hot water temperature sensor Bad connection
has short-circuited
Check whether the sensor is connected
Important Check the link and the connectors
Domestic hot water production is not Check that the sensor has been correctly fitted
guaranteed Sensor failure
Check the Ohmic value of the sensor
Replace the sensor if necessary
The middle domestic hot water temperature sensor Bad connection
is open
Check whether the sensor is connected
Important Check the link and the connectors
Domestic hot water production is not Check that the sensor has been correctly fitted
guaranteed Sensor failure
Check the Ohmic value of the sensor
Replace the sensor if necessary
The room temperature sensor is has short-circuit­ Bad connection
ed
Check whether the sensor is connected
Important Check the link and the connectors
Domestic hot water production is en­ Check that the sensor has been correctly fitted
sured by the back-up, if the back-up is Sensor failure
authorised
Check the Ohmic value of the sensor
Replace the sensor if necessary
The room temperature sensor is open Bad connection

Important Check whether the sensor is connected

Domestic hot water production is en­ Check the link and the connectors
sured by the back-up, if the back-up is Check that the sensor has been correctly fitted
authorised Sensor failure
Check the Ohmic value of the sensor
Replace the sensor if necessary

50 7734712 - v01 - 22052019

 9 Troubleshooting

Code Description Checking / solution

The evaporator temperature sensor has short- Bad connection
circuited
Check whether the sensor is connected
Important Check the link and the connectors
Domestic hot water production is en­ Check that the sensor has been correctly fitted
sured by the back-up, if the back-up is Sensor failure
authorised
Check the Ohmic value of the sensor
Replace the sensor if necessary
The evaporator temperature sensor is open Bad connection

Important Check whether the sensor is connected

Domestic hot water production is en­ Check the link and the connectors
sured by the back-up, if the back-up is Check that the sensor has been correctly fitted
authorised Sensor failure
Check the Ohmic value of the sensor
Replace the sensor if necessary
Malfunction on the defrosting function Check activation of the defrosting solenoid valve
Check the position of the temperature sensor in
Important the evaporator
Domestic hot water production is en­ Check that the fan is working correctly
sured by the back-up, if the back-up is Check that the condensates can flow freely
authorised
The LP pressure switch alarm has been active for Check the position of the temperature sensor in
more than 120 seconds the evaporator
Check that the fan is working correctly
Important Check that the condensates can flow freely
Domestic hot water production is en­
sured by the back-up, if the back-up is
authorised
The low pressure pressure switch alarm has been Check the position of the temperature sensor in
tripped more than three times during the last 24 the evaporator
hours Check that the fan is working correctly
Check that the condensates can flow freely
Important Check the refrigerant load
Domestic hot water production is en­
sured by the back-up, if the back-up is
authorised, or if necessary, by manual
activation.

9.2 Log of messages and faults

The menu is used to consult the 16 most recent messages and

16 most recent faults displayed by the control panel.
Fig.40 1. Press the MENU key once.
The menu is displayed.

14

12
3

34

MODE MENU

C003203-E
1x

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9 Troubleshooting

Fig.41 2. Press the key five times.

The menu is displayed.
3. Press the MODE key to go into this menu.
14

12
Tab.20
34 Accessing the menu Menu Description
1x Error memory
MODE MENU 2x History of lockouts
C004189-A
3x Resetting the lockout
and error memory to
zero

Fig.42 4. The menu is displayed with the number of errors which have
occurred.
5. To return to the previous display, press the MENU key.
14

12

34

MODE MENU
C004190-A

9.2.1 Error display Err

1. When the Err menu is displayed, press the MODE key.

2. The code for the most recent error is displayed, along with its
time and date displayed in turn.
3. Press the MODE key to access the details of the error.
Use the and keys to scroll through the list of errors.
Use the MENU key to return to the list of errors.

9.2.2 Displaying lockouts bL

1. When the bL menu is displayed, press the MODE key.

2. The code for the most recent lockout is displayed, along with its
time and date displayed in turn.
3. Press the MODE key to access the details of the lockout.
Use the and keys to scroll through the list of lockouts.
Use the MENU key to return to the list of lockouts.

9.2.3 Resetting the lockout and error memory to zero

Fig.43 1. When the CLr menu is displayed, press the MODE key.
The lockout and error memory is reset to zero.

14

12

34

MODE MENU
C004191-A

52 7734712 - v01 - 22052019

 10 Appendix

10 Appendix

10.1 EC Declaration of Conformity

The appliance complies with the standard type described in the EC

declaration of conformity. It has been manufactured and put into
circulation in accordance with the requirements of European Directives.
The original of the declaration of compliance is available from the
manufacturer.

10.2 Information on the ecodesign and energy labelling directives

10.2.1 Specific information

Recommendations

Danger
Only qualified persons are authorised to assemble, install and
maintain the installation.

Ecodesign Directive

This product conforms to the requirements of European Directive

2009/125/EC on the ecodesign of energy-related products.
Technical data - Heat pump water heaters

Tab.21 Technical parameters for heat pump water heaters

SPC 200 SPC 300 SPC 300S
Daily electricity consumption according to Qelec kWh 3.205 4.881 6.066
EN16147
Declared load profile L XL XL
Sound power level, indoors(1) LWA dB(A) 57 57 57
Storage volume V l 215.0 270.0 265.0
Mixed water at 40°C V40 l 274 380 383
(1) If applicable.

Circulating pump

Important
The benchmark for the most efficient circulating pumps is EEI ≤
0.20.

Disposal and Recycling

Fig.44 Recycling
Warning
The thermodynamic water heater must be dismantled and
scrapped by a qualified professional in accordance with prevailing
local and national regulations.
1. Switch off the thermodynamic water heater.
MW-3000179-03

2. Cut the mains electricity supply to the thermodynamic water heater.

3. Close the water mains.
4. Drain the installation.
5. Dismantle the thermodynamic water heater.
6. Scrap or recycle the thermodynamic water heater in accordance with
local and national regulations.

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10 Appendix

54 7734712 - v01 - 22052019

© Copyright
All technical and technological information contained in these technical instructions, as well as any drawings and technical
descriptions supplied, remain our property and shall not be multiplied without our prior consent in writing. Subject to alterations.
36061 BASSANO DEL GRAPPA (VI) - ITALY
Via Trozzetti, 20
Servizio clienti: Tel +39 0424 517800 - Fax +39 0424 38089
www.baxi.it

7734712 - v01 - 22052019

7734712-001-01