Danfoss RAS-B2 Dynamic Radiator Pack and Dynamic TRV Instructions
- June 11, 2024
- Danfoss
Table of Contents
Danfoss RAS-B2 Dynamic Radiator Pack and Dynamic TRV Instructions
Pressure Independent Radiator Valve
Danfoss RAS-B2 radiator valve is a pressure independent radiator valve, designed for use in 2 pipe heating systems together with Danfoss TRV. RAS-B2 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-B2 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-B2 radiator valve can be fitted either vertically or
horizontally giving the installer total flexibility.
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-B2 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| RAS-C2| RA-DV| –| 10mm
013G7662| RAS-C2| RA-DV| RLV-D| 15mm
013G7663| RAS-C2| RA-DV| RLV-D| 10mm
Sensor Installation
Fitting the Sensor
-
Remove cap from valve and turn sensor to
-
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.
-
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.
-
Whilst holding the sensor firmly on the valve secure connection by turning union nut clock-wise by hand.
-
Whilst still holding the sensor firmly on the valve fully tighten grey union nut using parrot nose pliers.
-
Set desired room temperature.
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.
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provided that such alterations can be made without subsequential changes being
necessary in specifications already agreed.
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Danfoss Limited
Heating Segment
heating.danfoss.co.uk
+44 (0)1895 617000
E-mail:
customerservice.uk@danfoss.com