Wolf LH, Operation And Maintenance Instructions

Page: 15 / 28

3040531_0711 15
Control Devices for Damper Actuators
Automatic relay A1
Auxiliary relay for the automatic operation of
the fresh air damper with an actuartor 230 V
"OPEN-SHUT".
The automatic relay A1 switches the actuator
to position "SHUT", if the LH-unit is switched
off or if the anti-frost thermostat is activated.
Switching on the LH-unit, the actuator
switches to position "OPEN".
Control voltage 230 V
Max. capacity 3 kW
Weight 0,5 kg
Prot. class IP 54
Part no. 79 65 020
Actuator
Open/Shut
Reverse
function by
changing of
2 and 3
Automatic
relay A1
Anti-frost
thermostat
Selection
switch fresh
air/mixed air
(on site)
Actuator
Open-Shut
Switch
Automatic
relay A1
Reverse function
by changing of 2
and 3
Automatic relay A1S
Auxiliary relay with integrated position
transmitter for the automatic operation of the
mixed air damper by means of a stepless
actuator 230 V.
The automatic relay A1S switches the
actuator to the position set on the position
transmitter, if the LH-unit is switched off or if
the anti-frost thermostat is activated.
Switching on the LH-unit, the actuator
switches to the position set at the position
transmitter.
Control voltage 230 V
Max. capacity 3 kW
Weight 0,5 kg
Prot. class IP 54
Part no. 79 65 012
K
K
A1
L1
L2
L3
N
PE
10
F1
T 3,15 A
A2
2
1 2
PE
L1
N
1
2
3
3
1 11
3 4 8 9
A1S
M
1~
Actuator
stepless
Position
transmitter
Control device