Alpha-InnoTec WZSV 42K3M, Operating Manual

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Subject to technical amendments without prior notice | 83072100aUK | ait-deutschland GmbH
5. Recommendation: To balance out pressure
fluctuations and water hammers and avoid
unnecessary loss of water, install an expansion
vessel with through-flow fitting.
6. Ensure that the operating overpressures
(

“Technical data / Scope of supply”, from
page 24) are not exceeded. Install pressure
reducer if necessary.
6.4 Connect the electrical cables
IMPORTANT
Irreparable damage to the compressor due to
wrong rotating field!
► Ensure that there is a clockwise rotating field for
the compressor load infeed.
Basic information on the electrical connection
NOTE
Ensure that the unit is supplied with electricity
at all times. After working inside the unit and
attaching the unit panelling, switch the power
supply back on immediately.
● The specifications of the local energy supply
company may apply to electrical connections
● Fit the power supply for the heat pump
with an all-pole miniature circuit-breaker
with at least 3 mm contact spacing (per
IEC 60947-2)
● Note the level of the tripping current
(

“Technical data / Scope of supply”, from
page 24)
● Comply with the electromagnetic compatibility
regulations (EMC regulations)
● Lay unshielded power supply cables and shielded
cables (bus cable) sufficiently far apart (> 100 mm)
● Maximum line length: 30 m.
The LIN-bus cable must be a shielded cable of at
least 4 x 0.5 mm²
Pull in the cables and conductors and make
the connections
1. Strip the sheathing of all cables to external loads
before laying in the cable duct of the control box.
2. Open electrical switchbox:
● Undo 2 screws at the top of the cover panel of
the electrical control box
● Unhook cover panel
3. Lay the control / sensor cables and unit supply
cable and connect:
● Route cables through the reserve conduits (①)
and (②) only, from behind into the inside of the
unit