INSTRUCTION
Radiator Thermostat RAS-D
2
Combi
BI-DIRECTIONAL VALVE WITH FLOW-SELECTABLE FEATURE
1
Close all radiator valves by turning
the valve cover cap clockwise.
Leave system to cool.
2
Start boiler/heating.
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.
Setting ring
013R9399
013R9399
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
03/
200
5
VI
AQA1
02
