Technical Description

Application:
TA thermostats are used together with TA thermostatic valves for controlling the temperature of each room individually.

Function:
RVT 50 B/C, RVT 60 B, RVT 90 B:
When room temperature exceeds the thermoststat's setting mark, the expansion medium increases in volume and starts closing the valve. When room temperature falls, the volume decreases and the valve's return spring opens the valve.

RVT 90 K:
When the room temperature rises above the preset value of the thermostat, the valve begins to modulate to maintain set-point.

RVT 70 B:
When water temperature rises above preset value the thermostat starts closing the valve. When water temperature falls, the volume decreases and the valve's return spring opens the valve.

Nominal temperature range:
These temperatures apply for a nominal lift according to CEN. During normal operating conditions the desired room temperature is maintained with a maximum deviation of ± 1°C. An increase in temperature of approx 2°C on the sensor above desired temperature setting is necessary for the thermostat to close the valve entirely.

Max working temperature:
The thermostat should not be subjected to temperatures above 50°C or below -20°C.

Making:
CENCER-marking, year and week of manufacturing.

RVT 90 B
Mounting and adjustment of the thermostat part:
1. Screw off the protective cover (1) of the valve.

2. Fasten the regulating part (2) on the valve and ensure thatthe two internal lips fit on the wrench flats of the O-ring box (3).

3. Tighten the cap nut (4).

4. Fix the sensor (5) in a place where it is not affected by the heat from any radiator, pipes, sunshine or draught from windows or the like.

5. Fix the capillary (6) on the wall with the attached braces.

6. Adjust to desired temperature using the handwheel (7).

7. NOTE!! If a radiator is to be removed, the regulating part should be changed to a protective cover or manual adjustment handwheel. (A closed thermostat valve opens at fallling temperature - thus letting water out in the room).

Adjustment of the temperature range:
To limit the temperature upwards or downwards:
Limiting upwards, read paragraph 3
Limiting downwards, read paragraph 4

1. The handwheel is set at the desired limiting value, for example 7 on the scale.
2. Remove the handwheel (7) without changing the position of the adjusting ring (8).
3. Pull the pin (9) out of the adjusting ring and move it anticlockwise towards the stop lug on the holder (10).
4. Pull the pin (11) out of the adjusting ring and move it clockwise towards the stop lug on the holder (10).
5. Press on the handwheel.
NOTE!! The original positions of the adjusting pins are marked by means of a stamped ring midway between the pins. To alter the set limits, use the 50 349-007 tool to press the pins out.

Locking the handwheel:
1. The handwheel (7) is set at the desired temperature.
2. Remove the handwheel without changing the position of the adjusting ring (8).
3. Pull the two pins out of the adjusting ring (8) and press them tight on either side of the stop lug of the holder (10).
4. Push on the handwheel.
5. The handwheel is now locked.

RVT 90 K
Mounting and adjustment of the thermostat part:
1. Screw off the protective cover of the valve (save the protective cover).
2. Fasten the regulating part (1) on the valve and ensure that the two internal lips fit on the wrench flats of the packing box.
3. Tighten the cap nut (2).
4. Fix the sensor (3) in a place where it is not affected by the heat from any radiator, pipes, sunshine or draught from windows or the like.
5. Fix the capillary (4) on the wall with the attached braces.
6. Adjust to desired temperature using the handwheel (5) (in the middle of the scale gives an opening temperature of 22°).

Adjustment of the temperature range:
To limit the temperature upwards or downwards:
Limiting upwards, read paragraph 3
Limiting downwards, read paragraph 4

1. The handwheel is set at the desired limiting value.
2. Remove the handwheel (5) without changing the position of the adjusting ring (6).
3. Pull the pin (7) out of the adjusting ring and move it anticlockwise towards the stop lug on the holder (8).
4. Pull the pin (9) out of the adjusting ring and move it clockwise towards the stop lug on the holder (8).
5. Press on the handwheel.
NOTE!! The original positions of the adjusting pins are marked by means of a stamped ring midway between the pins.

Locking the handwheel:
1. The handwheel (5) is set at the desired temperature.
2. Remove the handwheel without changing the position of the adjusting ring (6).
3. Pull the two pins out of the adjusting ring (6) and press them tight on either side of the stop lug of the holder (8).
4. Push on the handwheel.
5. The handwheel is now locked.

                                                                           

Get a quick quote by sending an email to our Sales Dept.