013R9355
Radiator Thermostat RAS-C2 Combi Pack
BI-DIRECTIONAL VALVE WITH FLOW-SELECTABLE FEATURE
INSTRUCTION
013R9355
Installation of valve
The valve is a bi-directional valve * and can be installed
horizontally or vertically in either the flow or return pipe.
A built in flow direction selection feature can be used to
eliminate the risk of water hammer.
1
Close all radiator valves by turning
the valve cover cap clockwise. Leave
system to cool.
Keymark reference:
This package contains sensor 013G6040,
valve 013G6281 (15mm) or
valve 013G6283 (8/10 mm)
2
Start boiler/heating.
Troubleshooting
In the unlikely event of water hammer being encountered
turn the setting ring (see diagram 4) to the other setting.
Alternatively if commissioning the whole system, establish
the flow direction through each valve using the diagrams
below.
If the flow direction needs to be changed there is no need to
remove the valve, simply turn the setting ring.
3
Open one valve and determine flow
direction. Which pipe heats first?
4
Remove cap and turn setting ring
according to the drawings - the
setting ring is turned by hand only.
5
Repeat step 3 and 4 until all valves have been
set correctly. Sensor may now be fitted or the
valve cap temporarily refitted.
* Maximum pressure drop should not exceed 0.45 bar
Setting ring
© Danfoss HS | 07/2020 | VISXM702
Installation Guide User Guide
Fitting the Sensor
1. Remove cap from valve and turn sensor to
2. Make sure union nut
is turned loosely up
towards the sensor
body until it is only
slightly free of the lower
part of the sensor body.
3. Press the sensor
firmly onto the valve.
Sensor horizontal:
ensuring that the
scale pointer is at top.
Sensor vertical:
ensuring that the
scale pointer is at
the front.
4. Whilst holding the
sensor firmly on
the valve secure
connection by
turning union nut
clock-wise by hand.
5. Whilst still holding the
sensor firmly on the
valve fully tighten grey
union nut using parrot
nose pliers.
Setting the desired room temperatures
The desired room temperature is set by turning the head.
The temperatures obtained are approximately:
Do not cover the thermostat
The thermostat opens and closes as determined by the
temperature around it. Therefore the sensor must never be
hidden behind thick curtains, furniture, etc. Alternatively a
thermostat with remote sensor should be used.
Positive SHUT-OFF feature:
The head can be turned past the setting (a slight resistance
will be felt) to setting "0" at which point the water flow is
shut off completely. After also shutting the lockshield valve
the radiator may be drained and removed for maintenance
and decoration purposes.
Lockshield valve (type RLV-D) is only included
in codes: 013G6005, 013G6006 and 013G6009
6. Set desired room
temperature.
Removing the Sensor
Turn the sensor to max. position . Turn union nut anticlockwise to release lockingmechanism (4). The sensor
can now be separated from the valve.
Removal of
protective cap
Balancing
What is a thermostatic radiator valve (TRV)?
... an explanation for householders.
TRVs sense the air temperature around them and regulate the flow of water through
the radiator which they are fitted to. They do not control the boiler.
They should be set at a level that gives you the room temperature you want. These
settings may have to be different in each room, and you should set the TRVs to suit
each room and then leave them to do their job.
Turning a TRV to a higher setting will not make the room heat up any faster. How
quickly the room heats up depends on the boiler size and setting, and the radiator size. Turning a TRV to a lower setting will result in the room being controlled at a lower temperature, and saves energy.
TRVs need a free flow of air to sense the temperature, so they must not be covered by curtains or blocked by furniture.
TRVs cannot turn off the boiler when the whole house is warm. To do that, you will need a room thermostat as well.
The radiator in the room with the room thermostat should not normally have a TRV, but, if it does, keep the TRV on
the maximum setting and adjust the room thermostat as explained with the instructions.
© Danfoss HS | 07/2020 | VISXM702
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