Danfoss Radiator Thermostat RAS-C2 Combi Pack / Radiator Pack
Bi-Directional Valve with Flow-Selectable Feature - Instruction
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.
Steps:
- Close all radiator valves by turning the valve cover cap clockwise. Leave the system to cool. [Diagram: Hand turning valve cap clockwise.]
- Start boiler/heating. [Diagram: Hand pressing a switch.]
- Open one valve and determine flow direction. Which pipe heats first? [Diagram: Hand opening a valve.]
- Remove cap and turn setting ring according to the drawings - the setting ring is turned by hand only. [Diagram: Hand turning a setting ring on a radiator valve. Associated diagrams show valve with setting ring and radiators with flow arrows.]
- Repeat step 3 and 4 until all valves have been set correctly. Sensor may now be fitted or the valve cap temporarily refitted.
[*] Maximum pressure drop should not exceed 0.45 bar.
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. If the flow direction needs to be changed, there is no need to remove the valve; simply turn the setting ring.
Keymark Reference
This package contains sensor 013G6040, valve 013G6281 (15mm) or valve 013G6283 (8/10 mm).
RAS-C/RAS-D with Push-Fit
Mounting
- Ensure the pipe is pushed to the pipe stop in the elbow. [Diagram: Pipe inserted into push-fit elbow.]
- IMPORTANT: Both nuts have to be tightened. It is good practice to check the fitting before use: pull the pipe back to check it is secure.
Dismounting
IMPORTANT: Ensure system is depressurized before removing fitting. Push in collet squarely against face of fitting. With the collet held in this position, the pipe can be pulled out. The fitting can then be re-used. [Diagram: Pushing collet and pulling pipe.]
Collet Cover and Collet Clip
Collet covers or collet clips provide added security against unintended pipe disconnection. [Images: Collet clip, Collet cover.]
Collet clip: Code No 013G4913 (10 pcs)
Collet cover: Code No 013G4912 (10 pcs)
Cutting the Pipes
- Cut the pipe square ensuring that it is free from score marks and burs. For plastic pipe, we recommend the use of a plastic pipe cutter; do not use a hacksaw. [Diagram: Pipe being cut.]
- For plastic pipes, it is essential that a pipe insert is used. This must be of the same make as the pipe. It is important to ensure that all internal burs are removed from the pipe end prior to fitting the insert. Do not use any lubricant.
Fitting the Sensor (Installation Guide)
- Remove cap from valve and turn sensor to [setting].
- 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. [Diagrams: Sensor being attached to valve, showing horizontal and vertical orientation.]
- 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, tighten the grey union nut to 5 Nm, using parrot nose pliers.
- Set desired room temperature.
Removing the Sensor
Turn the sensor to max. position [arrow]. Turn union nut anti-clockwise to release locking mechanism (4). The sensor can now be separated from the valve. [Diagram: Turning union nut counter-clockwise.]
Specifications
| Pipe Type | Specifications |
|---|---|
| Copper pipe | According to BS2871 Part 1 / BS EN1057. Max. temp. 92°C, Max. pressure 3 bar |
| Plastic pipes | According to BS7291. Max. temp. 92°C. Max. pressure 3 bar |
Lockshield Valve
Lockshield valve (type RLV-D) is only included in codes 013G6007. [Diagram: Removal of protective cap and opening.]
User Guide
Setting the desired room temperatures
The desired room temperature is set by turning the head. The temperatures obtained are approximately:
[Diagram: Temperature scale showing 0°C (Frost protection), 8°C (Bedroom), 12°C (Living room), 16°C, 20°C, 24°C (Bathroom).]
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. [Diagram: Thermostat head turned to '0'.]
