Vaillant VWZ MEH 61 Installation Instructions And Instructions For Use - page 12
Installation instructions and instructions for use VWZ MEH 61 0020166663_03
12
4.4.3
Command relay connection
i
Notes
The appliance is delivered pre-cabled.
N
N
1 2
L
2
L
1
L
3
1
2
4kW
2kW
1 control relay
2 resistance heater relay
cable
4.4.4
Connecting the main circuit board
Refer to the “appendix” section.
4.5
Cableway and passage
b
Caution!
Risk of material damage
►
Comply with electrical cable
routing
►
Comply with the prescribed cable-
routing paths to avoid any contact
between the cable and the
surface of the heating coil.
►
When replacing the power cable,
tighten the cable's screwed
connection sufficiently to secure
the strain relief.
Strain relief: 100N (10kg)
i
Notes
The cables must pass through the openings
provided for this purpose.
3
4
2
1
8
5
7
5
6
5
7
8
1 Pressure sensor cable
2 Temperature
sensor
cable
3 Circuit board power
cable
4 Resistance heater
control relay cable
5 Power
cable
6 3 way-valve motor cable
7 High voltage systems
options cables
8 Low voltage systems
options cables
5 Start-up
► Check the electrical and water installation.
► Check all connections for leaks.
► Fill the heating installation.
► Purge your heating system.
► Replace the power.
► To use the AI interface and confi gure the hydraulic
station, refer to the user and installer documents for the
aroTHERM heat pump.
e
Danger!
Risk of death from electric shock!
►
Before carrying out the following
START-UP