Danfoss WP75- RF User guide
7 day electronic
programmable hot
WP75- RF
water controller
Installation & User Instructions
®
Certification Mark
Index
Installation
Product speci cation 3
Thermostat (WP75-RF) installation 4-5
Sensor (CS1) installation 5-7
Wiring 7
Commissioning 8
User
What is a Cylinder Thermostat? 9
Your programmer 10
How to read the display 10
Preset programmes 11
Resetting the unit 11
Setting the Time and Day 12
Running your programme 12
Index
Before changing the preset programmes 13
Programming the unit (7-day mode) 14
Programming the unit (5/2-day mode) 15
Running your programme 16
BOOST function 17
Hot Water Available function 17-18
Changing clocks forward/back 18
Battery backup 19
2
Contact details 20
Installation Instructions
Please Note:
This product should only be installed by a quali ed
electrician or competent heating installer and
should be in accordance with the current edition of
the IEEE wiring regulations.
Product Speci cation
Thermostat features WP75-RF
Power supply 2 x AA/MN1500/LR alkaline cells
Memory back-up 1 min for battery change
Transmission frequency (RF model) 433.92MHz
Transmitter range (RF model) 30m max
Max. ambient temperature 45°C
Temperature range 35 - 65°C
Dimensions, mm (W x H x D) Unit - 110 x 88 x 28
Remote Sensor - 48 x 48 x 45
Design standard EN60730-2-9 (EN300220 for RF)
Ball hardness test 75°C
Product Speci cation
Control pollution situation Degree 2
Time accuracy ± 1 min
Temperature accuracy ± 1°C
Important note RF products: Ensure that there are no large metal objects, such as boiler cases
or other large appliances, in line of sight between the transmitter and receiver as these will
prevent communication between thermostat and receiver.
3
Installation
WP75-RF installation
Select a position for the WP75-RF that provides easy access to
the unit (it could be used on a daily basis by the user, so the
display needs to be clearly visible) and bearing in mind that
the maximum distance between the thermostat and sensor is
10 metres.
Prepare the xing position to provide access for the sensor
cable through the rear of the wallplate.
If the cable is to be surface xed note that it can only enter
the WP75-RF from the bottom through the positions shown
below.
30mm min
Wall or plaster
box mounting
holes
Aperture for
rear entry
Terminals
A
B
Outline of entry
Thermostat Installation
Clearance for
screwdriver access
Fix the wallplate so that the control module can be easily
Knockout for bottom
cable entry
attached or removed. Make the sensor wiring connections as
shown in the wiring diagram on page 7.
Before attaching the control module to the wallplate set the
DIL switch, located in a recess on the rear of the module, to
select whether the WP75-RF will be a 7 day controller or a 5/2
day (weekday/weekend) controller. Move both switches to
4
the desired position.
Attach the control module to the wallplate by placing the
slots in the top of the module over the lugs on the top edge
of the wallplate and hinging down until the slot in the bottom
edge of the module locates over the screw attached to the
wallplate. Tighten the screw.
CS1 Sensor installation
Gas or Oil red Boiler Systems
The sensor should be tted to the side of the domestic hot
water cylinder, half way up from the bottom.
1/2 cylinder
height
For insulation thicker than 25mm
and up to 55mm thick, use the
extra cover supplied as a spacer to
ensure that the sensor is held in
firm contact with the cylinder wall.
IMPORTANT
1. Ensure cylinder wall is clean
2. Use heat transfer paste
provided
Select the xing position and remove su cient insulation to
Sensor Installation
ensure that the sensor element can make close contact with
the surface of the cylinder wall.
Clean away all traces of insulation and ensure both cylinder
wall and sensor are clean.
Before mounting the sensor, coat the copper foil on the contact
surface of the sensor with the heat conducting paste supplied.
The sensor must be connected to the WP75-RF using double
insulated cable greater than 0.75mm
2
.
5
Connect the cable to the sensor terminals and replace the
cover. Place the sensor on the cylinder and clamp tightly to
the cylinder using the strap provided.
Cable entry is from behind if tted to a single gang ush box,
or from above, below or from the left if surface xed cable is
used.
Fast Recovery Cylinder Heater Systems
The sensor should be tted to the side of the domestic hot
water cylinder just below the top seam.
Select the xing position and remove su cient insulation to
ensure that the sensor element can make close contact with the
surface of the cylinder wall (see opposite).
Clean away all traces of insulation and ensure both cylinder
wall and sensor are clean.
For insulation thicker than 25mm
and up to 55mm thick, use the
extra cover supplied as a spacer
to ensure that the sensor is held
in firm contact with the cylinder wall.
Sensor Installation
IMPORTANT
1. Ensure cylinder wall is clean
2. Use heat transfer paste
provided
Before mounting the sensor, coat the copper foil on the
contact surface of the sensor with the heat conducting paste
supplied.
6
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