Datasheet

RET230
Electronic Room Thermostats
with Function Switches
Features

RET230 C01 RET230 C03

• Wide range of application options

• Compact design
• Electronic accuracy
• Wallplate construction
• LED status indicators

This range of thermostats is aimed primarily at the RET230 C02: Designed for use in two-pipe
heating and air conditioning market, where there changeover fan coil unit systems, the RET230 C02
is a demand for enhanced functionality. All models incorporates a manual Heating/Cooling (Winter/
feature different combinations of supplementary Summer) switch which allows the thermostat to
function switches which are accessible to the operate as a cooling thermostat in the summer
user. and a heating thermostat in the winter. A second
two position switch allows the user to turn the
RET230 LS: This thermostat, which can be used in thermostat output off if so desired.
either heating or cooling systems, incorporates
a manual switch which allows the thermostat RET230C03: Designed for use in two-pipe
output to be switched off. changeover fan coil unit systems, the RET230
C03 incorporates a manual Heating/Off/Cooling
RET230 C3: Designed for use with cooling only fan (Winter/Off/Summer) switch which allows the
coil units, the RET230 C3 incorporates a combined thermostat to operate as a cooling thermostat
system isolation switch and Fan Auto/Fan in the summer and a heating thermostat in the
Continuous switch. The latter allows the user to winter. A second three position switch allows the
decide if the fan should run continuously or only user to select one of three fan speed settings.
when there is a demand for cooling. A second
three position switch allows the user to select one
of three fan speed settings.

Part No. 284 Issue 10 08/06 

Datasheet RET230 Electronic Room Thermostat with Switches
Specifications Thermostat for use in systems having central changeover from heating to cooling

RET230 Electronic Thermostats with function switches RET230C02 RET230C03

Order Codes 087N702200 087N703200
Heating/Cooling thermostat for changeover systems • •
System Off/Auto Selector •
Summer/Off/Winter (Heating/Off/Cooling) selector • (1)
Summer/Winter (Heating/Cooling) selector •
3 speed fan switch output terminals •
Single speed fan output terminal •
Switching Differential <1K
Operating Voltage 220/240 Vac, 50/60 Hz
Switch Rating 2 (1) A
Temperature Range 5-30°C
Dimensions (mm) 85 wide x 87 high x 42 deep
(1) Switch label based on symbols

Thermostat for use in non-changeover systems

RET230 Electronic Thermostats with function switches RET230C3 RET230LS

Order Codes 087N702300 087N700700
Cooling thermostat •
Heating or Cooling thermostat • (2)
Fan Auto/Continuous switch with system Off selector •
System Off/Auto selector •
Power On and thermostat calling LEDs • •
3 speed fan switch output terminals •
Switching Differential <1K
Operating Voltage 220/240 Vac, 50/60 Hz
Switch Rating 2 (1) A
Temperature Range 5-30°C
Dimensions (mm) 85 wide x 87 high x 42 deep
(2) RET230LS has SPDT contacts and can be used in heating or cooling systems

Dimensions
3

87 78

85 42

 Part No. 284 Issue 10 08/06

Datasheet RET230 Electronic Room Thermostat with Switches
RET230 C02
I SW1 0

>
SW1 SW2 RL

ELECTRONICS
SW2

N L 1 2 3 4
230V
N N N
3 4

RET230 C03
I 0
SW1

SW1 SW2
RL
ELECTRONICS SW2
I

>
III
II

N L 1 2 3 4
230V I II III
N N

RET230 LS
I SW1
0

SW1
ELECTRONICS
RL
>

SW2

N L 1 2 3 4
230V

RET230 C3
I 0
SW1

SW1 SW2
RL
ELECTRONICS SW2
I
>

III
II

N L 1 2 3 4
230V I II III
N N

Part No. 284 Issue 10 08/06 

Datasheet RET230 Electronic Room Thermostat with Switches

Danfoss can accept no responsibility for possible errors in catalogues, brochures, and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already
on order provided that such alterations can be made without subsequent changes being necessary in specifications already agreed.
All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Danfoss Randall Ltd.

Ampthill Road
Bedford MK42 9ER
Tel: 0845 1217 400
Fax: 0845 1217 515
Email: danfossrandall@danfoss.com
Website: www.danfoss-randall.co.uk

 Part No. 284 Issue 10 08/06 VDRKI102