Danfoss RAS-C2 Combi Manuel utilisateur

INSTRUCTION

Radiator Thermostat RAS-C2Combi

BI-DIRECTIONAL VALVE WITH FLOW-SELECTABLE FEATURE

Close all radiator valves by turning

the valve cover cap clockwise.

Leave system to cool.

Start boiler/heating.

Open one valve and determine

ﬂow direction. Which pipe heats

ﬁrst?

Remove cap and turn setting

ring according to the drawings -

the setting ring is turned by hand

only.

Repeat step 3 and 4 until all valves have

been set correctly. Sensor may now be ﬁt-

ted or the valve cap temporarily reﬁtted.

Setting ring

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.

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.

* Maximum pressure drop should not exceed 0.45 bar VISXM302/Danfoss DKCD 05/2011

Keymark reference: This package contains sensor 013G6040, valve 013G6281 (15mm) or valve 013G6283 (8/10 mm)

Removing the Sensor

Turn the sensor to max. position . Turn union nut

anti-clockwise to release lockingmechanism (4). The

sensor can now be separated from the valve.

Setting the desired room temperatures

The desired room temperature is set by turning the head.

The temperatures obtained are approximately:

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.

6. Set desired room

temperature.

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.

Lockshield valve (type RLV-D) is only in-

cluded

in codes: 013G6005, 013G6006, 013G6007.

Removal of

protective cap

Balancing

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.

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.

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