Danfoss RAS-D2 Combi User manual

INSTRUCTION

Radiator Thermostat RAS-D2Combi

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.

Remove cap and turn setting ring

according to the drawings - the

setting ring is turned by hand only.

013R9398

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.

We recommend using a flat faced adjustable

spanner and a soft cloth to protect the chrome

surfaces when tightening up the connections.

Troubleshooting

In the unlikely event of water hammer being encoun-

tered 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 Danfoss DKCD 3/2005 VIULE402

Setting ring

Repeat step 3 and 4 until all valves have

been set correctly. Sensor may now be

fitted or the valve cap temporarily refitted.

Open one valve and determine

flow direction. Which pipe heats

first?

Fitting the Sensor

1. Remove cap

from valve and

turn sensor to

2. 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.

3. Whilst holding the

sensor firmly on

the valve secure

connection by

tightening the

Allen screw using

the enclosed key.

4. Set desired room temperature.

Removing the Sensor

Loosen the Allen screw (3).

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 ap-

proximately:

Installation Guide User Guide

Do not cover the thermostat

The thermostat opens and closes as determined

by the temperature around it. Therefore the sen-

sor must never be hidden behind thick curtains,

furniture, etc. Alternatively a thermostat with

remote sensor should be used.

Lockshield valve RLV-D is included

in codes: Code no’s 013G6018 and 013G6019

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.

Removal of

protective cap

Table of contents

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