07/2019

cod. 20032882 rev. 18

RTQ
EN INSTALLATION, OPERATION, MAINTENANCE AND SYSTEM MANAGEMENT MANUAL


RANGE Dear Customer,

Thank you for choosing a R boiler. You have purchased a
MODEL CODE modern, high efficiency, quality product that is designed to
give dependable and safe service and to provide comfort in
RTQ 50 20029726 the home for many years to come. Arrange for your boiler to be
RTQ 64 20029727 serviced regularly by an authorised Technical Assistance Service
RTQ 82 20029729 R. Their personnel are specially trained to keep your boiler
RTQ 105 20029731 efficient and cheap to run. They also stock any original spare
parts that might be required.
RTQ 154 20008935 This instruction manual contains important instructions and
RTQ 203 20008937 precautions that must be observed to ensure the efficient func-
RTQ 235 20008938 tioning of your RTQ boiler.
RTQ 297 20008940
Please accept our renewed thanks for your purchase
RTQ 323 20008941 Riello S.p.A.
RTQ 357 20008942
RTQ 418 20008943
RTQ 467 20008944 CONFORMITY
RTQ 537 20113300
R RTQ boilers conform to:
RTQ 597 20113301
−− Directive 92/42/EEC on efficiency requirements and Annex
RTQ 715 20008947 E and Pres. Republic Decree n. 412, 26 August 1993 (**)
RTQ 837 20107214
When used in conjunction with a CE marked jet burner, they also
ACCESSORIES satisfy the requirements:
For a complete list of accessories and details of their compatibil- −− Gas Appliances Directive 2009/142/EC (until 20 April 2018 )
ity, refer to the Catalogue. and Regulation (EU) 2016/426 (from 21 April 2018)
−− applicable sections of the Electromagnetic Compatibility
Directive 2014/30/EU
−− applicable sections of the Low Voltage Directive 2014/35/
EU

ENGLISH
2


Contents
CONTENTS

1 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 General Safety Information . . . . . . . . . . . . . . . . . . . . . 4
1.2 Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Description of the appliance . . . . . . . . . . . . . . . . . . . . 4
1.4 Control panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.5 Recommended burners . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.6 Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.7 Technical specifications . . . . . . . . . . . . . . . . . . . . . . . . 10

2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1 Unpacking the product . . . . . . . . . . . . . . . . . . . . . . . . 12
2.2 Overall dimensions and weights . . . . . . . . . . . . . . . . . 13
2.3 Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.4 Place of installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.5 Installation of low heat output boilers . . . . . . . . . . . . . 15
2.6 Installation in older systems and systems requiring
modernisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.7 Water connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.8 Anti-condensate pump . . . . . . . . . . . . . . . . . . . . . . . . 19
2.9 Hoses should also be fixed to the floor and suitably
protected whenever possible . . . . . . . . . . . . . . . . . . . . 20
2.10 Door hinges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
2.11 Changing the direction of door opening . . . . . . . . . . . . 21
2.12 Fitting the insulation and turbulators . . . . . . . . . . . . . 23
2.13 Earth connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2.14 Fitting the casing panels . . . . . . . . . . . . . . . . . . . . . . . 25
2.15 Preparing for initial startup . . . . . . . . . . . . . . . . . . . . . 30
2.16 Initial startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
2.17 Checks during and after initial start-up . . . . . . . . . . . . 31
2.18 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2.19 Cleaning the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
2.20 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

3 USE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.1 Putting into service . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
3.2 Temporary shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.3 Preparing for extended periods of disuse . . . . . . . . . . . 37
3.4 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
3.5 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
3.6 Useful information . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

This manual, Code

- Rev.
comprises
The following symbols are used in this manual: pages.
99CAUTION! = Identifies actions that require caution and
adequate preparation.

00STOP! = Identifies actions that you MUST NOT do.

This manual, Code 20032882 - Rev. 18 (07/2019)
comprises 40 pages.
3
GENERAL INFORMATION

GENERAL INFORMATION

1 GENERAL INFORMATION 00Do not touch the boiler while barefoot or wet.
00Never clean or service the boiler without first disconnect-
1.1 General Safety Information ing it from the mains electricity supply by turning the main
power switch and the control panel switch OFF.

99The boiler is delivered in separate crates. Check that it is 00Do not tamper with or adjust the safety or control devices
complete, undamaged and as ordered as soon as you re- without prior authorisation and instructions from the man-
ceive it. Report any discrepancies or damage to the dealer ufacturer.
who sold it.
00Do not plug or block the condensate drain outlet.
99This product must be installed by a legally qualified heat-
ing engineer. On completion of the installation, the install- 00Never pull, disconnect, or twist the electrical cables coming
er must issue the owner with a declaration of conformity from the appliance even if it is disconnected from the mains
confirming that the installation has been completed to the electricity supply.
highest standards in compliance with the instructions pro-
vided by R in this instruction manual, and that it con- 00Do not obstruct or restrict the vents in the room where the
forms to all applicable laws and standards. boiler is installed. Adequate ventilation is essential for cor-
rect combustion.
99This product must only be used for the purpose for which it
is designed and made, as specified by R. R declines 00Do not expose the boiler to the elements. It is designed to
all responsibility, contractual or other, for damage to prop- work indoors.
erty or injury to persons or animals caused by improper in-
stallation, adjustment, maintenance or use. 00Do not switch the boiler off if outdoor temperature drops
below ZERO (risk of freezing).
99If you notice any water leaking from the boiler, disconnect it
immediately from the mains electricity supply, shut off the 00Do not store containers of flammable substances in the
water supply, and notify your local R’s Technical Assis- room where the boiler is installed.
tance Service or a qualified heating engineer immediately.
00Do not allow children or persons with reduced physical,
99Periodically check that operating pressure in the water cir- sensorial or mental abilities or with insufficient experience
cuit is over 1 bar but below the maximum limit specified for and knowledge to operate this system without proper su-
the boiler. If this is not the case, contact Technical Assistance pervision from the person responsible for its safe use.
Service R or a professionally qualified heating engineer.
00Do not dispose of packaging material into the environment,
99If the boiler is not going to be used for an extended pe- or leave it within the reach of children, since it can become
riod of time, contact R’s Technical Assistance Service or a potential hazard. Dispose of packaging material in com-
a qualified heating engineer to have it prepared for shut- pliance with applicable legislation.
down as follows
−− Switch the boiler OFF at the control panel 1.3 Description of the appliance
−− Turn the main system switch "off"
−− Close the fuel cock and heating circuit water cock R RTQ steel boilers are high efficiency boilers with horizon-
−− Drain the central heating circuit if there is any risk of tal, flame reversal combustion chambers and concentrically
freezing. arranged flue gas pipes. They are designed for central heating
99The boiler must be serviced at least once a year. and, when used in conjunction with a suitable storage cylinder,
for domestic hot water production too.
99This instruction manual is an integral part of the boiler. It Because they operate at low pressure, they provide a gradual
heating action without thermal shock.
must be kept safe and must ALWAYS accompany the boiler,
even if it is sold to another owner or transferred to another The most important technical features of these boilers are:
user or to another installation. If you damage or lose this −− The combustion chamber and heat exchange system are
manual, order a replacement immediately from your local specially designed and shaped to achieve the best pos-
R’s Technical Assistance Service. sible volume ratio;
−− Only top quality materials are used to ensure a long
1.2 Precautions working life.

The operation of any appliance that uses fuel, electrical power Stainless steel turbulators inside the flue gas pipes establish an
and water demands that a number of fundamental safety pre- ideal pressure inside the combustion chamber and an ideal flue
cautions be respected: gas temperature. Evenly distributed thermal load optimises the
00It is forbidden to use electrical devices or equipment, such efficiency of the boiler-burner system.
The boiler body is thoroughly insulated with a layer of high den-
as switches, appliances, etc. if there is a smell of gas or un- sity glass wool.
burnt products. If so: The boiler’s front door and the flue gas box can be opened com-
−− Ventilate the room, opening doors and windows pletely to facilitate the inspection, maintenance and cleaning of
−− Close the fuel shut-off cock internal parts and to speed up servicing in general.
−− Report the fault immediately to the R's Technical As- The front door can open in either direction, even without re-
sistance Service or a professionally qualified heating en- moving the burner.
gineer.

General information
4
GENERAL INFORMATION

GENERAL INFORMATION

RTQ 50÷235
4 5

7
3
8
2
9

10

1
11

12
13
14

1 Burner 9 Combustion chamber

2 Flame inspection window 10 Flue gas exhaust
3 Door 11 Flue gas box
4 Casing 12 Inspection window
5 Flue gas pipes 13 Condensate outlet
6 Instrument bulb/sensor sockets 14 Central heating return
7 Central heating flow
8 Turbulators

RTQ 297÷837

4 5 6 7 8 9

3
10
2
11

12
0

03

13
06 09

1 14

15

1 Burner 9 Flue gas pipes

2 Flame inspection window with pressure meas- 10 Turbulators
urement / cooling valve 11 Combustion chamber
3 Door 12 Flue gas exhaust
4 Casing 13 Flue gas box
5 Central heating return 14 Inspection window
6 Safety device fitting 15 Condensate outlet
7 Instrument bulb/sensor sockets
8 Central heating flow

5
GENERAL INFORMATION

GENERAL INFORMATION

1.4 Control panels

The R control panels that can be used with R RTQ steel

boilers are listed below. These control panels cater for all the
needs of the heating system and of all the devices installed in it.

TECH CLIMA TOP for central heating (1 direct zone and 2 mixed
zones) and domestic hot water production with a single stage,
two stage, or modulating burner. Also for controlling solar heat-
ing system and cascaded boiler systems.

TECH PRIME for central heating only (1 direct zone) with a single
or two stage burner.

TECH CLIMA COMFORT for central heating (1 direct zone and 1

mixed zone) and domestic hot water production with a single
stage burner. Also for controlling solar heating system and cas-
caded boiler systems.

TECH PRIME ACS for central heating (1 direct zone) and domestic
hot water production with a single or two stage burner.
00When a TECH CLIMA TOP or CLIMA COMFORT control panel is in-
stalled, the boiler return (cold) line must be equipped with
a temperature sensor socket. See the Catalogue for the nec-
essary accessory part numbers.

6
GENERAL INFORMATION

GENERAL INFORMATION

1.5 Recommended burners

The burners recommended to obtain the best possible performance from R RTQ boilers are:

BURNERS RTQ
Long head *
MODEL CODE 418 467 537 597 715 837
GAS
RS 44 /1 MZ t.l. 3788611 x
RS 50 t.l. 3784703 x
RS 70 t.l. 3785103 x x x
RS 100 t.l. 3785303 x
RS 50/M t.l. 3781621 x
RS 70/M t.l. 3789611 x x x
RS 100/M t.l. 3789711 x
MIXED OIL/GAS
RLS 50 3484601 x x 3010266
RLS 70 3485001 x x x 3010345
RLS 100 3485201 x 3010346
RLS 68 M MX t.l. 3898011 x x x x
RLS 120 M MX t.l. 3898111 x x
(*) Long head REQUIRED.

99Burner/boiler combinations have been calculated on the 99If a two stage burner is installed, 1st stage heat input must
basis of the burner working at 3% O2. not be less than 70% of total heat input. With liquid fuel
burners equipped with 2 nozzles, it is therefore important
99Long heads and burner plates are required for the correct to choose the correct first stage nozzle.
installation and coupling of the burners.
99To assemble/disassemble the burners equipped with re-
circulation tube, it might be necessary to remove the latter
before carrying out such operations (strictly comply with the
use and maintenance manual of the burner).

BURNERS RTQ
Long head *
MODEL CODE 418 467 537 597 715 837
OIL
RL 50 t.l. 3474633 x x x
RL 70 t.l. 3475033 x x
RL 100 t.l. 3475233 x
RL 50/M t.l. 3471603 x x x
RL 70/M t.l. 3477013 x x
RL 100/M t.l. 3477213 x
NAPHTHA
P45/N ECO t.l. 3434624 x
P60/N ECO t.c. 3435023 x x x
P60/N ECO t.l. 3435024 x
(*) Long head REQUIRED.

99See the instruction manual provided with the burner for 99In Italy, the Decree of the President of the Council of Minis-
further information on, burner installation, electrical con- ters of the 2nd October 1995 requires that heating systems
nections, burner adjustments. with heating power of less than 3 MW use fuel oil with a
sulphur content of less than 0.3 % by weight.
99Long heads and burner plates are required for the correct
installation and coupling of the burners. 99Naphtha fuel can only be used if the insulation on the boil-
er door is first protected with a coat of water soluble, alu-
99If a two stage burner is installed, 1st stage heat input must minium and silicon oxide based paint. When running on
not be less than 70% of total heat input. With liquid fuel naphtha, reduce the boiler’s maximum rated heat output
burners equipped with 2 nozzles, it is therefore important by 20%.
to choose the correct first stage nozzle.
99To assemble/disassemble the burners equipped with re-
circulation tube, it might be necessary to remove the latter
before carrying out such operations (strictly comply with the
use and maintenance manual of the burner).
7
GENERAL INFORMATION

GENERAL INFORMATION

IMPORTANT NOTES FOR BURNER INSTALLATION

Before fixing the burner to the boiler, make sure that: BURNER PLATE
−− The door opens the right way (see the relevant sections R RTQ 50÷105 boilers have burner plates with holes arranged
for details on how to reverse the door) to accept the recommended burners. The following table shows
−− The length (L) of the burner fixing bolts is less than (S), the dimensions of the holes.
i.e. the total depth of the seal, plates and washer. Longer RTQ
bolts can cause the door to warp, compromising its
ability to seal the boiler hermetically and permitting 50 64 82 105
the release of combustion fumes. Ø (mm) 110 110 140 140
A (mm) 106 106 120 120
To ensure correct burner installation, also refer to the burner’s Threads M8 M8 M8 M8
own manual.

S MODELS RTQ 154÷837

L<S
IMPORTANT
If you are installing a new boiler but re-using an old burner,
always perform the following checks:
−− make sure that the performance of the old burner is ad-
equate for the requirements of the boiler;
−− make sure that the length and diameter of the burner’s
blast tube are as specified in the following table.
99When you finish installing the burner in the boiler, fill the
gap between the burner’s blast tube and the refractory ma-
terial in the door with the ceramic insulation (A) supplied
with the boiler.
L

A
MODELS RTQ 50÷105

IMPORTANT
If you are installing a new boiler but re-using an old burner,
always perform the following checks: Ø
−− make sure that the performance of the old burner is ad-
equate for the requirements of the boiler;
−− make sure that the length and diameter of the burner’s
blast tube are as specified in the following table.
99When you finish installing the burner in the boiler, fill the
gap between the burner’s blast tube and the refractory ma- L
terial in the door with the ceramic insulation (A) supplied
with the boiler.
RTQ
A 154 203 235 297 323 357
Burner head min. L (mm) 205 215 215 215 215 215
Ø hole in door (mm) 160 160 160 180 180 195
RTQ
Ø 418 467 537 597 715 837
Burner head min. L (mm) 245 245 245 245 265 265
Ø hole in door (mm) 195 195 195 195 195 195

00Do not re-use old burners if their blast tube lengths are be-
low those specified in the table.
L
BURNER PLATE
R RTQ 154 to 837 boilers come fitted with burner plates that
have been pre-drilled for the recommended burner types. The
RTQ burner plates must be drilled on installation if other burners are
50 64 82 105 used.
Burner head L min. (mm) 150 150 195 195
Ø hole in door (mm) 110 110 140 140

99Blast tubes must not exceed the specified lengths by more

than 20%.

00Do not re-use old burners if their blast tube lengths are be-
low those specified in the table.

8
GENERAL INFORMATION

GENERAL INFORMATION

1.6 Identification

The products are identified by:

Serial number plate

This is located on the boiler body and specifies the serial num- RIELLO S.p.A.
Via Ing.Pilade Riello 7

ber, model, and furnace power.

37045 Legnago (VR) - ITALY

Matricola Pres. Max esercizio

Serial no. Max.operating press. PMS kPa
Modello Portata term.
Model Max. heat inpt Qmax (Hi) kW
COMBUSTIBILE UTILIZZATO / FUEL: GAS, GASOLIO / GAS, OIL

RIELLO S.p.A. 23270000581

Data plate Via Ing.Pilade Riello 7
37045 Legnago (VR) - ITALY

066940IE

This lists the technical specifications and performance of the

CALDAIA IN ACCIAIO
STEEL BOILER
Modello Matricola
WEEK OF
product. It comes inside the documentation envelope. On
Model Serial number
Codice
Code
Codice PIN
PIN number MANUFACTURE
completion of the installation you MUST apply it in a clearly vis- Anno fabbricazione
Year of manufacture
Tipo
Type
Pot. utile Pmax
ible position at the top of one of the side panels. If you dam-
Portata term.
Max. heat inputQ max (Hi) kW Max. useful
60°/80°
kW
heat output
Portata term.
Min. heat input Q min (Hi) kW Pot. utile Pmin

age or lose this label, order a replacement immediately from

Min. useful kW
heat output 60°/80°
Pressione focolare
Furnace pressure pn mbar
Contenuto acqua
l

R's Technical Assistance Service.

Pres. Max esercizio Water capacity
Max. operating PMS kPa
pressure Superficie di scambio
T°Max ammessa Heat exchange m²
Tmax °C surface area
Max permitted T°
Aliment. elettrica
Power supply VEDI QUADRO ELETTRICO - SEE ELECTRIC CONTROL PANEL

Collegamento di terra obbligatorio - Obligatory ground connection

Combustibile utilizzato : TUTTI I GAS / GASOLIO

Fuel : GAS / OIL

PER CATEGORIA COMBUSTIBILE

E PAESI DI DESTINAZIONE VEDI ETICHETTA BRUCIATORE

FOR FUEL TYPE COUNTRY

OF DESTINATION SEE BURNER DATA PLATE

99If these plates or any other means of clearly identifying the

product are defaced, removed or lost, proper installation
and servicing may be rendered difficult.

9
GENERAL INFORMATION

GENERAL INFORMATION

1.7 Technical specifications

RTQ
DESCRIPTION
50 64 82 105
Fuel Gas / Oil
min 34,4 54,7 69,5 88,5 kW
Rated heat input
max 54,2 69,3 88,8 113,6 kW
min 32 51 65 83 kW
Rated useful heat output Pn
max 50 64 82 105 kW
min 93,1 93,3 93,5 93,8 %
Useful efficiency at min. Pn
max 92,2 92,3 92,3 92,4 %
Useful eff. at 30% max. Pn 95,1 95,3 95,4 95,7 %
Constant pressure drop < 1,5
Flue gas temperature (∆T) 182 167 177 170 °C
Flue gas mass flow rate 0,024 0,03 0,039 0,051 kg/sec
Furnace pressure 0,3 0,8 0,75 1,4 mbar
Furnace volume 37,8 45,2 80,2 97,43 dm3
Tot. volume of flue gas side 62,2 73,4 119,1 139,7 dm3
Total surface area for heat exchange 1,9 2,5 3,02 3,62 m2
Volumetric heat load 1435 1534 1108 1166 kW/m3
Specific heat load 26,7 25,8 27,5 29,4 kW/m2
Max. operating pressure 6 bar
Max. admissible temp. 110 °C
Max. operating temp. 95 °C
Min. admissible water return temp. 50 °C
∆T 10°C 26 34 61 68 mbar
Pressure drops
∆T 20°C 6 7 13 20 mbar
Water capacity 71 87 103 126 liters

99The stack must guarantee the minimum draught specified

by applicable technical standards, assuming zero pressure
at the connection to the flue gas exhaust.

99Values obtained with R GULLIVER BS burners with CO2 =

9,7%.

10
GENERAL INFORMATION

GENERAL INFORMATION

RTQ
DESCRIPTION
154 203 235 297 323 357 418 467 537 597 715 837
Fuel Gas / Oil
min 115 166 217 257 318 348 384 448 500 575 639 766 kW
Rated heat input
max 166 217 255 318 348 384 448 500 575 639 766 896 kW
min 109 157 203 243 297 325 358 418 466 536 596 714 kW
Rated useful heat output Pn
max 154 203 235 297 323 357 418 467 537 597 715 837 kW
min 94,5 94,5 93,4 94,6 93,4 93,3 93,2 93,3 93,2 93,2 93,2 93,2 %
Useful efficiency at min. Pn
max 92,9 93,4 92,3 93,4 92,8 92,9 93,3 93,4 93,4 93,4 93,4 93,4 %
Useful eff. at 30% max. Pn 91,4 93,3 92,8 93,3 93,3 93,3 93,3 93,3 93,3 93,3 93,3 93,3 %
Constant pressure drop < 1,4 < 1,2 <1
Flue gas temperature (∆T) 170÷180 °C
Flue gas mass flow rate 0,072 0,094 0,111 0,138 0,151
0,166 0,194 0,217 0,241 0,268 0,332 0,367 kg/sec
Furnace pressure 1,6 1,8 2,7 3,5 3,9 4,1 2,9 3,3 3,0 5,1 4,7 8,1 mbar
Furnace volume 91 138,4 138,4 199,1 199,1
199,1 298,9 298,9 331,3 331,3 410,5 469,8 dm3
Tot. volume of flue gas side 163,2 234,3 234,3 317,2 317,2
325,6 457,9 457,9 528,3 528,3 676,8 768,8 dm3
Total surface area for heat exchange 4,35 6,68 6,68 8,59 8,599,47 12,34 12,34 14,76 14,76 19,04 20,36 m2
Volumetric heat load 1824 1568 1842 1597 17481928 1499 1673 1736 1929 1866 1816 kW/m3
Specific heat load 35,5 30,3 35,2 34,6 37,637,7 33,9 37,9 36,4 40,4 37,6 41,1 kW/m2
Max. operating pressure 6 bar
Max. admissible temp. 110 °C
Max. operating temp. 95 °C
Min. admissible water return temp. 55 °C
∆T 10°C 32 70 97 202 258 373 280 315 140 150 455 185 mbar
Pressure drops
∆T 20°C 7,5 17,5 25 48 65 93,6 70,5 74,7 42 55 109 47 mbar
Water capacity 161 291 291 268 268 258 308 308 345 345 593 565 liters

99The stack must guarantee the minimum draught specified

by applicable technical standards, assuming zero pressure
at the connection to the flue gas exhaust.

99Values obtained with R RL and GULLIVER RG burners with

CO2 = 12,5%; RS and GULLIVER BS burners with CO2 = 9,7%.

11
INSTALLATION

INSTALLATION

2 INSTALLATION 2 THE CASING PANELS complete with assembly accessories (2

packs for models 537÷837).

2.1 Unpacking the product

R RTQ steel boilers come in 2 separate crates:

1 BOILER BODY CRATE to which is attached the documentation
envelope (A) containing:
−− Instruction manual;
−− Data label (to be applied to the casing on completion of
the installation);
−− Certificate of Warranty and water test certificate;
−− Bar code labels;
−− Spare parts catalogue.

IMPORTANT
A For the boiler to function correctly, it must be connected to a
R TECH control panel and dedicated control accessories.

99The following material, to be fitted by the installer, is locat-

ed inside the combustion chamber:
−− turbulators and turbulator fixing clips (for installation in
the flue gas pipes);
−− water connection flanges (models RTQ 537 to 3400 only);
−− boiler body insulation and fasteners.
For fitting instructions, see the section entitled "Fitting the insu-
lation and turbulators" on page 23.

MATERIAL
SUPPLIED

99The instruction manual is an integral part of the boiler. Once

located, read it thoroughly and keep it safe.

Installation
12
INSTALLATION

INSTALLATION

2.2 Overall dimensions and weights

RTQ 50÷105

160

D D1

A1 B1 E
A B
B2

RTQ
DESCRIPTION
50 64 82 105
A Width 605 605 705 705 mm
A1 Base width 560 560 660 660 mm
B Depth 830 980 910 1060 mm
B1 Base depth 623 773 672 822 mm
B2 Depth 885 1035 970 1120 mm
C Height 605 605 740 740 mm
D Burner height 310 310 384 384 mm
D1 Flue height 325 325 384 384 mm
E Door depth 110 110 135 135 mm
Weight of boiler 119 140 177 201 kg
Weight of casing 18 20 22 24 kg

13
INSTALLATION

INSTALLATION

RTQ 154÷235
70

A1 B1 E
A 161 70 B

RTQ 297÷467 70

A1 B1 E
A 161 70 B

RTQ 537÷837
70

A1 B1 E
A 161 70 B

RTQ
DESCRIPTION
154 203 235 297 323 357 418 467 537 597 715 837
A Width 805 853 853 925 925 925 975 975 975 975 1150 1150 mm
A1 Base width 753 803 803 875 875 875 925 925 925 925 1100 1100 mm
B Depth 1150 1330 1330 1480 1480 1480 1700 1700 1875 1875 2045 2140 mm
B1 Base depth 945 1110 1110 1255 1255 1255 1450 1450 1595 1595 1710 1835 mm
C Height 790 840 840 980 980 980 1030 1030 1030 1030 1210 1210 mm
D Burner height 410 435 435 525 525 525 550 550 550 550 655 655 mm
E Door depth 135 145 145 150 150 150 180 180 170 170 195 195 mm
Weight of boiler 266 352 352 423 423 443 588 588 685 680 903 985 kg
Weight of casing 22 30 30 35 35 35 42 42 46 46 50 52 kg

14
INSTALLATION

INSTALLATION

2.3 Handling 00Do not install the boiler outdoors. It is not designed to work
outdoors and is not fitted with the necessary automatic an-
R RTQ steel boilers are fitted with lifting attachments. Take ti-frost systems to do so.
great care when moving them and only use lifting equipment of
adequate capacity. 2.5 Installation of low heat output boilers
Remove the fixing screws and remove the wooden pallet before
R RTQ steel boilers (RTQ 50 to 105) can be installed in various
positioning the boiler.
ways:
99Wear suitable personal protective equipment and use suit- On the floor or pedestal
able safety devices. The ideal solution for just heating installation.

99If you are installing the boiler without a pedestal, the limit-
ed gap between the burner and the floor makes it particu-
larly important to keep the boiler room clean.

On the heater
This is more practical with a combined installation (heating and
hot water.
Low heat output models (RTQ 50 to 105) can be installed on R
7300 storage cylinders, which are specially designed to support
the weight of the boiler.

2.4 Place of installation

R RTQ steel boilers must be installed in a dedicated boiler

room, with adequately sized vents, in compliance with applica-
ble laws and standards.

If at all possible, the boiler should be installed on a raised base

to prevent the burner fan sucking up dust.
99When installing the boiler, allow sufficient space around it
to access all safety and control devices and to permit easy
maintenance.

99If the specific weight of the gas supply to the burner is

greater than the specific weight of air, install all electrical
parts at least 500 mm above floor level.

15
INSTALLATION

INSTALLATION

2.6 Installation in older systems and systems −− make sure that the expansion vessels are big enough to
requiring modernisation contain the volume generated by thermal expansion;
−− make sure that flow rate, head and direction of flow of
When installing these boilers in old systems or systems requiring the pumps are suitable and correct;
modernisation, always perform the following checks: −− make sure that the circuit has been flushed out to re-
−− make sure that the stack is able to withstand the tem- move all sludge and lime scale, and has been vented and
perature of the combustion gases and that it has been seal tested.
designed and made in compliance with applicable −− make sure that a suitable water treatment system is in-
standards. The stack must also be as straight as possible, stalled if the quality of the supply/recirculation water so
sealed, insulated and not blocked or choked; demands.
−− make sure that the electrical system has been installed
by a qualified electrician in compliance with applicable
standards;
−− make sure that the oil feed line and any oil storage tank
are made and installed in compliance with applicable
standards;

2.7 Water connections

99Allow for the dimensions of the control panel that needs to
R RTQ boilers are designed and made for use in central heat- be installed on top of the boiler.
ing installations, but can also be used for domestic hot water
production if connected to a suitable storage cylinder. Water fit-
tings are as specified in the following table.

RTQ 50÷105

F D G
25

RTQ
DESCRIPTION
50 64 82 105
A Return-base distance 85 85 110 110 mm
B Delivery/return centre to centre distance 455 455 552 552 mm
C Flue gas discharge projection 50 50 60 60 mm
D Del./ret. centre to centre distance conden-
75 75 85 85 mm
sation safety/discharge
E System delivery 1" 1/4 1” 1/4 1” 1/2 1” 1/2 Ø
F System return 1” 1/4 1” 1/4 1” 1/2 1” 1/2 Ø
G Flue pipe condensation discharge 1/2” 1/2” 1/2” 1/2” Ø
H Sensor socket G 1/2” - Ø 16 Ø

16
INSTALLATION

INSTALLATION

RTQ 154÷235
1 D 3
2 10

B
C 4/6 E 5

70 B A
RTQ 297÷467
D
1 3 4
2 C

F
5 E 6

70 B A
RTQ 537÷837
D
1 3 4
2 C

F
5 E 6

RTQ
DESCRIPTION
154 203 235 297 323 357 418 467 537 597 715 837
1 Central heating flow * G2" G2" G2" G2"1/2 G2"1/2 G2"1/2 G2"1/2 G2"1/2 DN80 DN80 DN80 DN100 Ø
2 Instrument bulb / sensor sock-
G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2" G1/2” G1/2” G1/2" G1/2" Ø
et
3 Safety device fitting G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1"1/4 G1”1/2 G1”1/2 G1"1/2 G1"1/2 Ø
4 Central heating return * G2" G2" G2" G2"1/2 G2"1/2 G2"1/2 G2"1/2 G2"1/2 DN80 DN80 DN80 DN100 Ø
5 Condensate drain G3/4" G3/4" G3/4" G3/4" G3/4" G3/4" G3/4" G3/4" G3/4" G3/4" G1" G1" Ø
6 Boiler drain G2" G2" G2" G1" G1" G1" G1" G1" G1" G1" G1"1/4 G1"1/4 Ø
A 577 628 628 750 750 750 850 850 1000 1000 1000 1250 mm
B 124 124 124 305 305 305 395 395 400 400 480 392 mm
C 115 115 115 80 80 80 80 80 85 85 75 105 mm
D 95 110 110 205 205 205 205 205 300 300 215 300 mm
E 95 120 120 110 110 110 110 110 110 110 110 110 mm
F - - - 95 95 95 95 95 95 95 95 95 mm
G - - - 85 85 85 85 85 110 110 145 110 mm
(*) All flanged connections are PN6 according to EN 1092-1.

17
INSTALLATION

INSTALLATION

Below are given the hydraulic diagrams:

Just heating installation

1 Boiler
2 Central heating system manifolds
SYSTEM 3 Disconnect valves
DELIVERY 4 System pumps
3 5 Non-return valves
5
6 Automatic vent valve
7 Boiler safety valve
4
7 8 Boiler drain cock
3 6 9 Expansion tank
2 10 Pressure reducer
3 11 Manual fast filling valve
11

3 3
SYSTEM
RETURN 10 FILLING
1
ENTRANCE
3 8
2
3 9

EMPTY

Central heating and domestic hot water production

1 Boiler
SYSTEM 2 Central heating system manifolds
DELIVERY 3 Disconnect valves
3 4 System pumps
5
5 Non-return valves
6 Automatic vent valve
4
7 Boiler safety valve
3 6 7
8 Boiler drain cock
2 9 Expansion vessel
3 10 Pressure reducer
11 Manual fast filling valve
SYSTEM 12 R 7300 storage cylinder
RETURN 13 DHW recirculation pump
1
14 Boiler safety valve
3
15 Water softener filter
2
11 16 Storage cylinder drain cock
3 9
8

HOT WATER
OUTLETS 3 13 5 3 12
14
3 15 10 3
16
FILLING
9 ENTRANCE

EMPTY EMPTY

18
INSTALLATION

INSTALLATION

Central heating and domestic hot water production

1 Boiler
HOT WATER SYSTEM SYSTEM 2 Central heating system manifolds
OUTLETS DELIVERY RETURN 3 Disconnect valves
3 4 System pumps
5 5 Non-return valves
4 6 Automatic vent valve
3 3 7 Boiler safety valve
2 2 8 Boiler drain cock
3 3 9 Storage cylinder safety valve
10 System filling cock
3 11 CH expansion vessel
3
4 7 12 R 7200 storage cylinder
4 6
5 5 3 17 5 3 13 Storage cylinder drain cock
3 3 14 DHW expansion vessel
11
15 Water softener filter
12 16 Pressure reducer
EAF 17 Anti-condensate pump
6 EAF Domestic cold water inlet

14 1
10
10 3 15 3
3 15 3
EAF
13 8

EMPTY EMPTY

99The choice of system components and the method of their REFERENCE VALUES
installation are left up to the heating engineer installing the pH 6-8
system. Installers must use their expertise to ensure proper Electrical conductivity less than 200 μS/cm (25°C)
installation and functioning in conformity to all applicable Chlorine ions less than 50 ppm
legislation. Sulphuric acid ions less than 50 ppm
99Circuits filled with anti-freeze must be fitted with water dis- Total iron less than 0.3 ppm
connectors. Alkalinity M less than 50 ppm
Total hardness less than 35°F
99If needed, water supplies and recovery circuits must be Sulphur ions none
conditioned by suitable treatment systems. See the table
alongside for reference values. Ammonia ions none
Silicon ions less than 30 ppm

2.8 Anti-condensate pump

99Any temperature controllers installed remotely from the
An anti-condensate pump operates during periods of no heat control panel must be compatible with the system’s electri-
request to avoid damage until the boiler returns to a stable op- cal connections and functioning logic.
erating temperature. While the system is operating, this pump
must guarantee a flow rate between 20 and 30% maximum
flow to ensure a water return temperature no lower than 55 °C.
Pump shutdown must also be delayed for at least 3 minutes at
the beginning of extended periods of boiler shutdown (over-
night or weekend shutdown etc.).
99A sensor socket must be positioned at a distance of 3 to 5
times the diameter of the water return pipe, upstream from
the water fitting, to measure effective water return temper-
ature and control the anti-condensate pump or the tem-
perature controller stabilisation function.
3÷5 D

19
INSTALLATION

INSTALLATION

2.9 Hoses should also be fixed to the floor and

suitably protected whenever possible

The flue gas exhaust and stack connection must be made in

compliance with applicable laws and standards, using heat re-
sistant, condensate resistant and stress resistant rigid pipe and
sealed joints.
Ø
RTQ
DIMENSIONS (mm)
50 64 82 105 154 203 235 297
Ø 139 139 179 179 180 180 180 200
H1
H1 325 325 384 384 500 525 525 525
H2 (with storage cyl-
950 950 1010 1010 - - - -
inder)
H2
RTQ
DIMENSIONS (mm)
323 357 418 467 537 597 715 837
Ø 200 200 250 250 250 250 300 300
H1 525 525 550 550 550 550 655 655
H2 (with storage cyl-
- - - - - - - -
inder)

99The stack must guarantee the minimum draught specified 99Inadequate or badly dimensioned stacks and exhausts can
by applicable technical standards, assuming zero pressure increase combustion noise, cause condensation problems
at the connection to the flue gas exhaust. Draught at the and affect combustion parameters.
stack must not exceed 0.2 mbar. Fit a draught limiter if
draught exceeds this value. 99Joints must be sealed using materials capable of withstand-
ing temperatures of at least 200°C (e.g. filler, mastic or sili-
99Uninsulated flues are potentially dangerous and can cause cone based sealant).
burns.
99If more than one boiler is installed in the same utility room,
99The connection between the horizontal section of flue and separate flues must be provided for each boiler. If this is not
the vertical stack must be either straight or at an angle of no possible, the burners should definitely be equipped with
more than 45°. automatic closing of the air damper.

2.10 Door hinges

Boilers are fitted with three door hinge points in the factory. The doors are initially fitted to open to the right. If you need to change
the door to open to the left, make the necessary modifications before performing any tests that require the boiler door to be
opened. Proceed as instructed below to change the direction of door opening.

99Once you have decided on the direction of door opening and the door opens successfully, remove the unused hinge assembly B.

Axis of door
rotation

A
B

20
INSTALLATION

INSTALLATION

2.11 Changing the direction of door opening −− insert a spanner through the slot in the side of the top
door mounting bracket and hold the bushing (8) steady;
−− unscrew the top bolt (6), then remove the bushing (8)
99Perform this operation before starting the boiler up for the and washer (7);
first time and before opening the door.

99If the door is not properly supported on its hinges, equip-

ment capable of supporting its entire weight must be used
to move it (see the table on page 13) and using suitable
safety equipment.

If you wish to modify the door to open to the left, i.e. with the
hinges on the left, proceed as follows:

99Make sure that the main door fixing bolts (1) are securely
tightened;
−− remove the top safety bolts (2) and the door stop bracket
(3);
−− remove the bottom safety bolts (4) and the door stop 6
bracket (5);

2
8
1 3

−− fit the bushing (8), bolt (6) and washer (7) to the opposite
1 side of the door.

6
4
5
7

1
1
1
1
1
1
1
1

21
INSTALLATION

INSTALLATION

99If it proves difficult to fit the washer (7) or screw the bolt (6) 99Make sure that the safety bolts (2 and 4) are securely tight-
into the bush (8) because the door is not accurately aligned, ened before attempting to open the door.
attach a hoist of adequate lifting capacity to the door (see
the weights and dimensions table), slightly loosen the fix- −− Completely unscrew the main fixing bolts (1) and open
ing bolts (1) and lift the door just enough to fit the washer the door (these bolts are captive in the door and cannot
(7) or align the hole in the door with the hole in the hinge. be removed);
Once the bolt (6) has engaged the bush, re-tighten the −− remove the spare hinge assembly ‘B’ [bolt (9), bushing
door fixing bolts (1). (10), and washer (11)] opposite the hinged side of the
door.
−− Fit the top door stop bracket (3) to the opposite side of
the door and fix it in place with the safety bolts (2);
−− fit the bottom door stop bracket (5) to the opposite side
of the door and fix it in place with the safety bolts (4).

B
2 9
3
1
1 11
1
1
10
1
1
1
1

4
5

22
INSTALLATION

INSTALLATION

2.12 Fitting the insulation and turbulators Fit the insulation over the rear of the combustion chamber first,
wrapping it around as shown in the figure.
For MODELS RTQ 297÷837

Open the door and remove the insulation.

Then fit the insulation over the front.

23
INSTALLATION

INSTALLATION

Hold the insulation in place with the clips provided. For ALL MODELS

Fit the fixing clips on the turbulators and push the turbulators
into the flue gas pipes until the clips make contact.

24
INSTALLATION

INSTALLATION

2.13 Earth connection 2.14 Fitting the casing panels

A terminal is provided on the front boiler head to connect the −− Engage the bottom of the side panels (1) in the bottom
boiler body to an efficient earth system. rails (2) and engage the top lip of the side panels in the
slots (A) in the front and rear heads;
Proceed as follows. −− fit your chosen control panel on the top panel (4) as in-
−− Unscrew the nut and washer (1) from the earth terminal; structed in the control panel’s own instruction manual;
−− Attach the earth cable’s eye connector (2) to the terminal −− route the electrical cables and insert the bulbs/sensors
(make sure that the cable is of adequate size and com- in their sockets;
plies with legislation in the country of installation); −− fit the cable grommets provided into their seats in the
−− Fit the nut and washer (1) to the earth terminal and tight- panels;
en the nut; −− fit the top panel (4) to close the top of the boiler.
−− Connect the other end of the cable to the system’s earth
bar. RTQ 50÷105

(*) (**)

2
1

(**) M6x30 brass

2 A
1
99Another hole (*) in the left side of the boiler head can also
be used to earth the appliance. If you wish to use this hole
for the earth connection, remove the terminal fittings from
the right of the head and move them to the left earthing
point.

99Refer to the instruction manuals your chosen control panel

and burner.

25
INSTALLATION

INSTALLATION

−− Engage the bottom of the side panels (1) in the bottom −− route the electrical cables and insert the bulbs/sensors
rails (2) and engage the top lip of the side panels in the in their sockets;
slots (A) in the front and rear heads; −− fit the cable grommets provided into their seats in the
−− secure the side panels in place with the top cross beam panels;
(3) and the screws provided; −− fit the top panel (4) to close the top of the boiler.
−− fit your chosen control panel on the top panel (4) as in-
structed in the control panel’s own instruction manual;

RTQ 154÷235

A
1

99Refer to the instruction manuals your chosen control panel

and burner.

26
INSTALLATION

INSTALLATION

−− Engage the bottom of the side panels (1) in the bottom −− route the electrical cables and insert the bulbs/sensors
rails (2) and engage the top lip of the side panels in the in their sockets;
slots (A) in the front and rear heads; −− fit the cable grommets provided into their seats in the
−− secure the side panels in place with the top cross beam panels;
(3) and the screws provided; −− fit the top panels (4), (5) and (6) to close the top of the
−− fit your chosen control panel on the top panel (4) as in- boiler.
structed in the control panel’s own instruction manual;

RTQ 297÷467

3 6
1

99Refer to the instruction manuals your chosen control panel

and burner.

27
INSTALLATION

INSTALLATION

−− Engage the bottoms of the rear side panels (1) and front −− route the electrical cables and insert the bulbs/sensors
side panels (2) in the bottom rails (3) then hook their top in their sockets;
lips over the top rails (4), running between the front and −− fit the cable grommets provided into their seats in the
rear heads; panels;
−− secure the side panels in place with the top cross beam −− fit, in this order, the rear top panel (6) and (7) and the
(5), and the screws provided; central panel (8), to close the top of the boiler.
−− fit your chosen control panel on the top panel (6), as in-
structed in the control panel’s own instruction manual;

RTQ 537÷597

7 1

2
6

3
1

99Refer to the instruction manuals your chosen control panel

and burner.

28
INSTALLATION

INSTALLATION

−− Engage the bottoms of the rear side panels (1) and front −− route the electrical cables and insert the bulbs/sensors
side panels (2) in the bottom rails (3) then hook their top in their sockets;
lips over the top rails (4), running between the front and −− fit the cable grommets provided into their seats in the
rear heads; panels;
−− secure the side panels in place with the top cross beam −− fit, in this order, the rear top panel (7) and (8) and the
(5), and the screws provided; central panel (9), to close the top of the boiler.
−− fit your chosen control panel on the top panel (6), as in-
structed in the control panel’s own instruction manual;

RTQ 715÷837

5 7
1

9
8
2

3
4
2

99Refer to the instruction manuals your chosen control panel

and burner.

29
INSTALLATION

INSTALLATION

2.15 Preparing for initial startup −− the expansion vessel is properly charged;

It is essential to perform the following checks before starting up

or testing the functioning of your R RTQ boiler. In particular,
check that:
−− the protective cardboard sheet (1) has been removed
from the ceramic fibre;

−− the working pressure in the water circuit is over 1 bar but

1 below the maximum limit specified for the boiler;
−− the water circuits have been properly bled;

−− the turbulators (2) are correctly positioned inside the heat −− the mains power connections to the boiler and its ac-
exchange tubes and the clips (3) are resting against the cessories (burner, pump, control panel, thermostats, etc.)
wall (4) of the heat exchanger; have been properly made.

2 99The phase-neutral polarity has been respected.

3
4
99A ground (earth) connection is obligatory.

2.16 Initial startup

Once you have completed all the preparatory steps, proceed as

follows to start up the boiler for the first time:
−− the water and gas cocks are open; −− turn the system’s main power switch ON;
−− if the system is equipped with a temperature controller or
timer thermostat, make sure that it is switched on;

−− there is an adequate fuel supply;

30
INSTALLATION

INSTALLATION

−− turn the control panel power switch ON and make sure 99If the safety thermostat trips, the boiler shuts down and a
that the green power indicator lights; warning is displayed on the control panel (if present).
Proceed as follows to reset the safety thermostat.
−− Wait until boiler temperature falls below 80°C.
40

20
60
80

100
40

20
60
80

100
−− Remove the safety thermostat cover.
−− Press the manual reset button.
0 120 0 120

−− Wait for the complete ignition cycle to be repeated and

for the flame to ignite.

CLIMA TOP / COMFORT PRIME / ACS

60 60
40 80 40 80
20 100 20 100

0 120 0 120

−− make the necessary settings as instructed in the instruc-

tion manual for your control panel;
CLIMA TOP / COMFORT PRIME / ACS

60
40 80
20 100

0 120

2.17 Checks during and after initial start-up

CLIMA TOP / COMFORT PRIME / ACS Once the boiler has started up, make sure that it shuts down
and re-starts properly when the following actions are taken:
−− the boiler thermostat setting is changed

−− adjust the timer thermostat/s or temperature controller

to the desired temperature (~20°C); 40
60
80
20 100

0 120

The burner should now ignite and remain in operation until the
set temperature is reached.

If any ignition faults or malfunctions occur, the burner performs CLIMA TOP / COMFORT PRIME / ACS
a “LOCKOUT SHUTDOWN”. This is shown by the red button light on
the burner and by the warning light on the control panel.

−− power to the control panel is switched off and on again

40

20

0
60
80

100

120
−− the room thermostat or timer thermostat is adjusted.

CLIMA TOP / COMFORT PRIME / ACS

99If a “LOCKOUT SHUTDOWN” occurs, wait about 30 seconds be- Check that there are no leaks from around the door seal. If there
fore resetting the burner. is any leakage of combustion gases, adjust the door as instruct-
ed on page 33.
To reset the burner, press the red button light on the burner and
wait until the flame ignites. Make sure that all the pumps in the system are free and rotate
This operation can be repeated 2 or 3 times at the most. If the in the right direction.
problem still persists after that, check:
−− all checks listed in the burner's own instruction manual;
−− all steps listed in the ‘Preparing for Initial Start-up’ sec-
tion;
−− all the electrical connections shown on the control panel
wiring diagrams.

If the problem persists, check that the safety thermostat has not
tripped.

31
INSTALLATION

INSTALLATION

Turn off the main power switch to the boiler and make sure that 2.18 Maintenance
the boiler shuts down properly.
Regular maintenance is a legal requirement. It is also essen-
tial for the safety, efficiency and durability of the boiler. Prop-
er maintenance keeps consumption and emissions down, and
ensures that the boiler continues to operate reliably over time.
Have your boiler serviced either by R's Technical Assistance
Service or by a qualified heating engineer.
Analyse the combustion fumes before commencing any mainte-
nance. The results of fume analysis can give a clear idea of what
servicing or repairs are needed.
−− Turn the system’s main power switch OFF
−− Close all the gas cocks.
Provided all the above conditions are satisfied, start the boil-
er up again, then analyse the combustion fumes, measure fuel
flow and re-check the door seal.

OPENING THE DOOR

−− Make sure that the top safety bolts (2) and bottom safety
bolts (3) on the hinged side of the boiler are tight;
−− completely unscrew the main fixing bolts (1) and open
the door (these bolts are captive in the door and cannot
be removed).

1
2

3
Flame inspection window Pressure measurement point
cooling

99A rubber socket is attached to the flame inspection window. 99Make sure that the door is properly adjusted after every
If this is used as a pressure measurement point, leave the maintenance operation.
screw in place in order to close off the pressure measure-
ment line during normal boiler functioning. If the rubber
socket is used to cool the flame inspection window, remove
the screw to ensure an adequate air flow.

32
INSTALLATION

INSTALLATION

ADJUSTING THE DOOR

Make quite sure that the door presses uniformly all around the
double seal to prevent dangerous fumes escaping into the air
from the pressurised furnace. Proceed as follows to adjust the
door seals:
−− push the door shut and tighten the main fixing bolts (1)
until the seals start to compress;
−− loosen the safety bolts (2 and 3) then fully tighten the 1
main door fixing bolts (1);
−− re-tighten the safety bolts (2 and 3).

3
2

If more thorough cleaning is required, remove the flue gas box

B
cover (5). Fit a new glass fibre seal when fitting the cover again.
9 Check at regular intervals that the condensate drain (6) is not
blocked.
On completion of cleaning, follow the above steps in the reverse
order to refit all removed parts.
11
RTQ 50÷105
10

99The first time you open the door, remove the spare hinge
assembly ‘B’ [bushing (10), bolt (9), and washer (11)] oppo-
site the hinged side of the door.
6
2.19 Cleaning the boiler

Clean the boiler and remove any carbon deposits from the sur- 4
faces of the heat exchanger at least once a year. This not only
extends the boiler’s working life, but also keeps it efficient in
terms of heat output and consumption.
RTQ
Proceed as follows to clean the boiler: DIMENSIONS (mm)
50 64 82 105
−− open the front door (1) and pull out the turbulators (2);
Length 625 625 625 802
99If you need to replace any turbulators, make sure that the N° waves 10 10 10 13
replacements have the characteristics listed in the table be-
low. N° turbulators 14 16 22 22
Depth clip 74 89 89 89
−− Use a flue brush (3) or other suitable tool to clean inside
the combustion chamber and the flue gas pipes;
−− open the inspection window (4) and clean out any de-
posits from inside the flue gas box.

33
INSTALLATION

INSTALLATION

RTQ 154÷235

RTQ
154 203 235
N° turbulators 22 30 30

RTQ 297÷837

6 4

RTQ
DIMENSIONS (mm)
297 323 357 418 467 537 597 715 837
N° turbulators 34 34 39 44 44 49 49 60 60

99When using heavy oil fuels (e.g. naphtha, etc.) clean/service

the boiler more frequently and periodically check:
−− clean the boiler’s heat exchange surfaces;
−− check and clean the turbulators. Replace if worn or dam-
aged.

34
INSTALLATION

INSTALLATION

2.20 Troubleshooting

FAULT CAUSE SOLUTION

−−Check the adjustment of the burner
Burner badly adjusted
(perform flue gas analysis)
The boiler becomes dirty very quickly Blockage in stack −−Clean the flue gas pipes and stack

Burner air intake dirty −−Clean the burner air intake

Boiler dirty −−Clean the flue gas pipes

Boiler and burner mismatched −−Check specifications and settings

The boiler does not reach its tempera-
ture setpoint
Insufficient air/fuel flow to burner −−Check and adjust the burner
−−Check correct functioning
Incorrect adjustment
−−Check the temperature setting
−−Check correct functioning
−−Check the temperature setting
Incorrect adjustment
−−Check the electrical wiring
The boiler keeps shutting down, and the −−Check the sensors
control panel warning light comes on
No water supply −−Check the circuit pressure
−−Check the circuit pressure
Air in the circuit
−−Check the vent valve
Air in the circuit −−Bleed the circuit

Pump malfunctioning −−Check/unseize the pump

The boiler has reached the set tempera-
ture but the radiators are still cold Problem with minimum temperature
−−Check the temperature setting
thermostat (if present)
Problem with minimum temp. thermo- −−Check the efficiency of the expansion
stat (if present) vessel
−−Clean the boiler body
−−Clean the flue gas pipes
There is a smell of fumes Fumes escaping into the air −−Check that the boiler, flue gas pipes
and stack are all properly sealed
−−Check the door seal
−−Check the seals, possible blockages and
There is a smell of gas Gas supply circuit.
fuel quality.
−−Check the circuit pressure
Circuit pressure too high −−Check pressure reducer functioning
The safety valve keeps opening −−Check pressure reducer setting
Problem with heating system expansion −−Check the efficiency of the expansion
vessel vessel

35
USE

USE

3 USE −− adjust the timer thermostat/s or temperature controller

to the desired temperature (~20°C);

3.1 Putting into service The burner should now ignite and remain in operation until the
set temperature is reached.
Have R’s Technical Assistance Service start up your R RTQ
boiler for the first time. Once this has been done, the boiler can If any ignition faults or malfunctions occur, the burner performs
be left to function automatically. a “LOCKOUT SHUTDOWN”. This is shown by the red button light on
the burner and by the warning light on the control panel.
Under certain circumstances, such as after long periods of dis-
use, the service engineer responsible for the boiler may need
to re-start it without involving the Technical Assistance Service. 40

20
60
80

100

To do so, perform the following checks and operations:

0 120

−− check that the gas cock and heating water cock are open;
−− while the system is still cold, check that working pressure
in the water circuit is over 1 bar but below the maximum
limit specified for the boiler; CLIMA TOP / COMFORT PRIME / ACS

99If a “LOCKOUT SHUTDOWN” occurs, wait about 30 seconds be-

fore resetting the burner.

To reset the burner, press the red button light on the burner and
wait until the flame ignites.
−− turn the system’s main power switch ON; This operation can be repeated 2 or 3 times at the most. If the
−− if the system is equipped with a temperature controller or problem still persists after that, check:
timer thermostat, make sure that it is switched on; −− all checks listed in the burner's own instruction manual;
−− all steps listed in the ‘Preparing for Initial Start-up’ sec-
tion;
−− all the electrical connections shown on the control panel
wiring diagrams.

If the problem persists, check that the safety thermostat has not
tripped.

To reset the burner, press the red button light on the burner and
−− turn the control panel power switch ON and make sure wait until the flame ignites.
that the green power indicator lights;
Repeat this operation 2-3 times at the most. If the problem per-
sists after that, call R’s Technical Assistance Service.
60 60
40 80 40 80
20 100 20 100

0 120 0 120

If the problem persists, check that the safety thermostat has not
tripped.

99If the safety thermostat trips, the boiler shuts down and a
CLIMA TOP / COMFORT PRIME / ACS warning is displayed on the control panel (if present).

Proceed as follows to reset the safety thermostat.

−− Wait until boiler temperature falls below 80°C.
−− make the necessary settings as instructed in the instruc- −− Remove the safety thermostat cover.
tion manual for your control panel; −− Press the manual reset button.
−− Wait for the complete ignition cycle to be repeated and
for the flame to ignite.
60
40 80
20 100

0 120

60 60
40 80 40 80
20 100 20 100

0 120 0 120

CLIMA TOP / COMFORT PRIME / ACS

CLIMA TOP / COMFORT PRIME / ACS

Use
36
USE

USE

3.2 Temporary shutdown 3.3 Preparing for extended periods of disuse

If you need to shut down the system for a short period, proceed If the boiler is not going to be used for an extended period of
as follows. time, perform the following operations:
−− turn the control panel power switch OFF and make sure −− Turn the control panel power switch OFF and make sure
that the green power indicator goes out; that the green power indicator goes out

60 60 60 60
40 80 40 80 40 80 40 80
20 100 20 100 20 100 20 100

0 120 0 120 0 120 0 120

CLIMA TOP / COMFORT PRIME / ACS CLIMA TOP / COMFORT PRIME / ACS

−− turn the mains power switch OFF; −− Turn the main system switch "off"

−− Close the fuel cock and heating circuit water cock

99Do NOT perform this procedure if outdoor temperature falls
below ZERO (risk of freezing).

Then proceed as follows:

−− make the necessary settings as instructed in the instruc-
tion manual for your control panel;

−− Drain the central heating circuit if there is any risk of

60
40 80
20 100

0 120

freezing.

99Contact your local R Technical Assistance Service if you

CLIMA TOP / COMFORT PRIME / ACS encounter any problems in completing the above proce-
dure.

3.4 Cleaning
−− make sure that the temperature controller or timer / room
thermostat is set to “frost protection” mode; Use a cloth damped in soapy water to clean the boiler’s external
casing.
To remove stubborn marks, use a cloth damped in a 50% mix
of water and denatured alcohol or a suitable cleaning product.
Carefully dry after cleaning.
00Do not use abrasive cleaning pads or powder detergents.
00Never clean the boiler without first disconnecting it from the
mains electricity supply by turning the mains power switch
and the control panel switch OFF.

99The combustion chamber and flue pipes must be cleaned

periodically by R Technical Assistance Service or by a
qualified heating engineer (see page 33).

37
USE

USE

3.5 Maintenance

Please remember that THE PERSON RESPONSIBLE FOR SYSTEM MAN-

AGEMENT MUST ENSURE THAT PROFESSIONALLY QUALIFIED HEATING
ENGINEERS UNDERTAKE PERIODIC MAINTENANCE AND COMBUSTION
EFFICIENCY MEASUREMENTS.

R’s Technical Assistance Service is qualified to satisfy these

legal requirements and can also provide useful information on
MAINTENANCE PROGRAMMES designed to guarantee:
−− Greater safety
−− Compliance with applicable legislation
−− Freedom from the risk of fines in the event of spot checks.

Regular maintenance is essential for the safety, efficiency and

durability of the boiler.
Servicing is a legal requirement and must be performed at least
once a year by a professionally qualified heating engineer.

38
USE

USE

3.6 Useful information

Seller:................................................................................ Installer:............................................................................
Mr.:................................................................................... Mr.:...................................................................................
Address:............................................................................ Address:............................................................................
Tel.:................................................................................... Tel.:...................................................................................

Technical Assistance Service:...............................................

Mr.:...................................................................................
Address:............................................................................
Tel.:...................................................................................

Date Work done

Fuel oil supplier:................................................................

Mr.:...................................................................................
Address:............................................................................
Tel.:...................................................................................

Quantity sup- Quantity sup- Quantity sup- Quantity sup-

Date Date Date Date
plied plied plied plied

39
RIELLO S.p.A.
37045 Legnago (VR) - Italy
Tel. 0442630111 - Fax 044222378 - www.riello.it

The manufacturer strives to continuously improve all products. Appearance, dimensions, technical specifications, standard equipment
and accessories are therefore liable to modification without notice.