Danfoss RAS-C Installation guide

013R9677

Radiator Thermostat RAS-C2 Combi Pack / Radiator Pack

BI-DIRECTIONAL VALVE WITH FLOW-SELECTABLE FEATURE

INSTRUCTION

013R9677

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 | 09/2020 | AN325831496588

RAS-C/RAS-D with push-fit

Mounting

1. Ensure the pipe is pushed
to the pipe stop in the
elbow.

2. IMPORTANT: Both nuts
have to be tightened It
is good practice to check
the fitting before use: pull
the pipe back to check it is
secure.

Dismounting

IMPORTANT: Ensure

system is depressurised
before removing fitting.

Push in collet squarely

against face of fitting.
With the collet held in this
position, the pipe can be
pulled out. The fitting can
then be re-used.

Collet cover and collet clip

Collet covers or collet clips provide added security against
unintended pipe disconnection.

Collet clip

Collet cover

Fitting the Sensor

Installation Guide

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.

Code No 013G4913 (10 pcs) Code No 013G4912 (10 pcs)

Cutting the pipes

1. Cut the pipe square ensuring that it is free from score
marks and burs. For plastic pipe we recommend the use
of a plastic pipe cutter, do not use a hacksaw

2. For plastic pipes, it is essential that a pipe insert is used.
This must be of the same make as the pipe. It is important
to ensure that all internal burs are removed from the pipe
end prior to fitting the insert. Do not use any lubricant.

Specification

Copper pipe According to BS2871 Part 1 / BS EN1057. Max. temp.

Plastic pipes: According to BS7291. Max. temp. 92°C. Max.

92°C, Max. pressure 3 bar

pressure 3bar

Lockshield valve (type RLV-D) is only included
in codes 013G6007

Removal of
protective cap

© Danfoss HS | 09/2020 | AN325831496588

Balancing

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.

User Guide

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.