Mounting
The reversing valve (QN10) is always installed between
the heat source and the hot water accumulator/rest of
the system. In the starting mode, without control voltage,
the reversing valve must be open to the rest of the sys-
tem. When control voltage is applied the reversing valve
opens to the hot water accumulator.
Installing the valve motor
Example installation:
1. Ensure that the depression, in the shaft (1a) and the
shaft on the valve (1b), are at 12 o'clock with the
port up. In this example ▲ and ■ are open while ● to
begin with is closed.
2. Ensure that the knob on the motor is turned all the
way to the left.
3. Turn the knob to the right to close ■ and open ●.
180°
1. 2.
LEK
LEK
LEK
LEK
LEK
LEK
The symbols are marked on the terminals.
Changing the direction of rotation
NOTE
Electrical installation and service must be carried
out under the supervision of a qualified electri-
cian. Cut the current with the circuit breaker
before carrying out any servicing. Electrical in-
stallation and wiring must be carried out in ac-
cordance with the stipulations in force.
Change the direction of rotation on the valve motor as
necessary.
1. Slacken off the screws and cap on the valve motor.
180°
1. 2.
LEK
LEK
LEK
LEK
LEK
LEK
2. Pull out the pins, turn them 90 ° and put them back.
9VST 20 | GB
