Danfoss REP24 User manual

REP24 24V electronic dial setting thermostat
with proportional output
and manual heat cool selection
Installation and Instructions

2
INDEX
Installation 3-9
Specication 3
Mounting 4-5
Wiring 6
DIL switch settings 7
Mounting 8
Locking & Limiting 9
User Instructions 10-12
Setting the temperature 10
Frost Protection 10
Standby Mode 10
Understanding your thermostat 11
Index

3
Specication
Features REP24
Power supply 24 Vac, ± 15%
Control Output 0-10 Vdc
Control Method P + I
Proportional Band 2° K
Temperature range 10-30°C
Maximum ambient temperature 45°C
Control pollution Degree 2
Design standard EN 60730-2-9
Rated impulse voltage 2.5kV
Ball hardness test 75°C
Dimensions (mm) 85 wide x 86 high x 42 deep
Installation Instructions

4
Mounting
Mounting

5
Fix at a height of 1.5m approx from the oor, away from
draughts or heat sources such as vents, heating elements or
direct sunlight.
Mounting
Mounting

6
Wiring
1
B
A234
24 Vac
0V 24V 0V V out
output
0-10V
ELECTRONICS
Wiring

7
DIL switch settings
Slide the DIL switches to the settings required.
HEAT - proportional output will activate if temperature is below
the setpoint. Frost protection mode is available (see page 10 ).
COOL -
proportional output will activate if temperature is above
the setpoint. Frost protection not available in cooling mode.
MOT - Motorised valve actuator selection.
WAX - Wax valve actuator selection.
MOT WAX
Heat Cool
DIL switch settings
Sw. On

8
Mounting
Mounting

9
Locking & Limiting
Locking - setting the thermostat at a temperature which
cannot be altered by the user.
Limiting - allowing the user to alter the temperature within
a predened range, which is less than the full range of the
product (i.e. between 18-22°).
Locking & Limiting

10
Setting the temperature
Turn setting dial to required temperature.
Frost Protection
To activate frost protection, turn the dial below 10°C. Frost
protection becomes active at 8°C. If the temperature in the
room drops below 8°C then the output will activate.
When frost protection is activated the right LED will turn
orange.
Standby Mode
In cooling mode, the standard frost protection is not available;
instead there is standby mode. When the dial is turned past
10°C the unit enters standby mode and cooling will be inactive
until dial is turned up past 10°C.
Display / Setting the temperature
User Instructions

11
Understanding your thermostat
Red LED -
heating in
operation
Green LED
- cooling in
operation
Orange
LED - Frost
protection
activated
Green LED -
thermostat
power on
Understanding your thermostat
RIf the left LED is green the thermostat has power.
RIf the right LED is red, the heating function is in operation.
RIf the right LED is green, the cooling function is in
operation.
RIf the right LED is orange, the frost protection is switched
on.

12 Part No 25283v01 07/08
Danfoss Randall Ltd
Ampthill Road
Bedford
MK42 9ER
Tel: [phone]
Fax: [phone]
www.danfoss.com/BusinessAreas/Heating
(2004/108/EC)
(2006/95/EC)