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Installation and operating instruction
Hydraulic unit WWP LS 8 ... 16-B
5 Installation
83306902 2/2017-05 La
27-88
5.5 Electrical connection
DANGER
Risk of electric shock
Working on the device when voltage is applied can lead to electric shock.
Isolate hydraulic unit and outdoor unit from power supply prior to carrying out
work.
Safeguard against accidental restart.
DANGER
Risk of electric shock
Working on the device when voltage is applied can lead to electric shock.
The electric heating in the hydraulic unit is equipped with a separate voltage sup-
ply.
Isolate the electric heating from the power supply prior to starting any work.
Safeguard against accidental restart.
The electrical connection must only be carried out by qualified electricians. Ob-
serve local regulations.
The preferred Bus line to be used is the 4 wire RJ11 shielded bus line (accessory).
Run bus lines and external sensors separately and preferentially using shielded
lines, placing the shield on to the existing shield plate.
Connect hydraulic unit
Switch off switch S1
1
.
Turn screw
2
90° anticlockwise.
Remove cover from the electrical installation duct.
1
2
DANGER
Risk of explosion due to excess pressure
When operating with closed service valves, a high pressure builds up. This can res-
ult in breakage of components.
Only apply the voltage, if the service valves on the outdoor unit are open.