Danfoss RAS-D Combi Installation guide

Danfoss
Brand
Danfoss
Model
RAS-D Combi
Type
Installation guide

Danfoss RAS-D Combi is a bi-directional radiator thermostat valve with a flow-selectable feature, eliminating water hammer risk. Here's what it offers:

  • Versatile Installation: Installs horizontally or vertically in both flow and return pipes.
  • Flow Direction Selection: Built-in feature prevents water hammer by allowing you to adjust the flow direction.
  • Easy Troubleshooting: Simply turn the setting ring to the opposite setting if water hammer occurs.
  • Precise Temperature Control: Set your desired room temperature by turning the head.
  • Positive Shut-Off: Completely shut off water flow by turning the head past the frost protection setting, allowing for radiator maintenance or removal.

Danfoss RAS-D Combi is a bi-directional radiator thermostat valve with a flow-selectable feature, eliminating water hammer risk. Here's what it offers:

  • Versatile Installation: Installs horizontally or vertically in both flow and return pipes.
  • Flow Direction Selection: Built-in feature prevents water hammer by allowing you to adjust the flow direction.
  • Easy Troubleshooting: Simply turn the setting ring to the opposite setting if water hammer occurs.
  • Precise Temperature Control: Set your desired room temperature by turning the head.
  • Positive Shut-Off: Completely shut off water flow by turning the head past the frost protection setting, allowing for radiator maintenance or removal.
INSTRUCTION
Radiator Thermostat RAS-D Combi
BI-DIRECTIONAL VALVE WITH FLOW-SELECTABLE FEATURE
Step 1
Close all radiator valves by turning
the valve cover cap clockwise.
Leave system to cool.
Step 2
Start boiler/heating.
Step 3
Open one valve and determine
flow direction. Which pipe heats
first?
Setting ring
Step 5
Repeat step 3 and 4 until all valves
have been set correctly.
Sensor may now be fitted or the
valve cap temporarily refitted.
Step 4
Remove cap and turn setting
ring according to the drawings -
the setting ring is turned by hand
only.
013R9354
013R9354
* Maximum pressure drop should not exceed 0.45 bar
Danfoss DKCD 03/2004 VIULE302
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.
Installation Guide
Fitting the Snap-Lock Sensor
1.Place the sensor onto the valve
Sensor horizontal:
ensuring that scale
pointer is at top.
Sensor vertical:
ensuring that the scale
pointer is at the front.
2.Press the sensor firmly on to valve until
snap-lock "clicks"
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 radia-
tor may be drained and removed for maintenance
and decoration purposes.
Removing the Snap-Lock Sensor
1. Turn sensor to setting.
2. Hold outer ring whilst turning inner ring anti-clock-
wise to release snap-lock mechanism.
The sensor can now be separated from the valve.
Resetting the Snap-Lock
3. Having removed sensor from valve, ensure sensor
is set to .
4. Hold outer ring whilst turning arrow mark on inner
ring towards scale pointer until stop.
Inner ring Outer ring Scale pointer
User Guide
Setting the desired room temperatures
The desired room temperature is set by turning
the head. The temperatures obtained are ap-
proximately:
Lockshield valve (type RLV-D) is only included
in codes: 013G6102, 013G6103, 013G6104
Adjusting Temperature Control Range
Setting the upper limit:
e.g. IIII as the highest possible temperature selec-
tion:
1. Turn the head to max. position
2. Keep the limiter tab to the right of the scale
pointer pressed down with a small screwdriver.
3. Turn the head round to IIII and release the tab.
Setting the lower limit:
e.g. II as the lowest possible temperature selec-
tion:
1. Turn the head to min. position i.e. 0-positive
off.
2. Keep the limiter tab to the left of the black
scale pointer pressed down with a small
screwdriver.
3. Turn the head to II. You can now release the
tab.
Limiter tabs are located in the groove
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.
Removal of
protective cap
Balancing
(This package contains sensor 013G5120/5022 and
valve 013G3281/3283 or 013G0084)
  • Page 1 1
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Danfoss RAS-D Combi Installation guide

Danfoss
Brand
Danfoss
Model
RAS-D Combi
Type
Installation guide

Danfoss RAS-D Combi is a bi-directional radiator thermostat valve with a flow-selectable feature, eliminating water hammer risk. Here's what it offers:

  • Versatile Installation: Installs horizontally or vertically in both flow and return pipes.
  • Flow Direction Selection: Built-in feature prevents water hammer by allowing you to adjust the flow direction.
  • Easy Troubleshooting: Simply turn the setting ring to the opposite setting if water hammer occurs.
  • Precise Temperature Control: Set your desired room temperature by turning the head.
  • Positive Shut-Off: Completely shut off water flow by turning the head past the frost protection setting, allowing for radiator maintenance or removal.
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