Danfoss RAS-B2 Installation guide
013R9682
!
Note the flow
direction
arrow
RAS-B2 Instruction
For Dynamic Radiator Pack and Dynamic TRV
Pressure Independent Radiator Valve
Danfoss RAS-B radiator valve is a pressure independent radiator valve, designed for use in 2-pipe heating systems together
with Danfoss TRV. RAS-B dynamic valves are fitted with a flow limiting device for presetting of the maximum water flow.
The valves are available with maximum water flow of 10 - 135 l/h. RAS-B has a built-in pressure regulator, which keeps the
differential pressure at a constant level of 0.1 bar, maintaining the set flow.
Installation of valve
The Danfoss RAS-B radiator valve can be fitted either vertically or horizontally giving the installer total flexibility.
For the best
performance we
recommend fitting the
valve with the sensor
mounted horizontally.
Vertical (Flow) Horizontal (Return)
013R9682
! If you are not installing a Danfoss lockshield valve (supplied in sets code, 013G7662 & 013G7663) ensure that the lockshield
is fully open. No balancing on the lockshield/ return pipe.
Keymark reference: This package contains sensor 013G6040 and valve 013G7677.
Presetting
The presetting values of RAS-B valves can be adjusted
easily and accurately without the use of tools (default
setting = N).
Presetting can be selected in steps from 1 to 7:
• Remove protective cap / thermostatic sensor.
• Find reference mark ().
• Turn setting ring until the aquired presetting aligns with
the reference mark.
At setting N the valve is fully open. This setting can be used
as a flushing position, if the system has to be flushed out
because of dirt problems. When the thermostatic sensor
has been installed, the presetting is protected against
unintended regulation.
RAS-B² Pack Contents:
Code Number Sensor Valve Lockshield Fitting Diameter
013G7660 RAS-C² RA-DV - 15mm
013G7661 R AS-C² RA-DV - 10mm
013G7662 RAS-C² RA-DV RLV-D 15mm
013G7663 RAS -C² RA-DV RLV- D 10mm
© Danfoss HS | 10/2020 | AN355150489406en-GB0101
Sensor Installation User Guide
Danfoss can a ccept no responsib ility for possi ble errors in cat alogues, broch ures and other prin ted material. Danf oss reserves th e right to alter its pr oducts witho ut notice. This also a pplies to
product s already on orde r provided that suc h alterations can b e made without subs equential chan ges being necess ary in specic ations already ag reed.
All tradem arks in this materi al are propert y of the respec tive companies. Da nfoss and all Danfo ss logotypes a re trademarks o f Danfoss A/S. All r ights reserve d.
Danfoss Limited
Heating Segment • heating.danfoss.co.uk • +44 (0)1895 617000 • E-mail: customerservice.uk@danfoss.com
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.
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.
Install Danfoss Installer App
6. Set desired room
temperature.
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.
Download free of charge for Android and iOS
© Danfoss HS | 10/2020 | AN355150489406en-GB0101
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