Connect The Electrical Cables - Alpha-InnoTec WZS C Series Operating Manual

Install the compression fittings and ball
valves
IMPORTANT
Leaks or fracture of the union nut due to excessive
force!
1. Check pipe ends for scratches, dirt and deforma-
tion.
2. Check proper position of the clamping ring on the
fitting.
3. Push the pipe through the clamping ring up to the
limit stop in the fitting.
4. Tighten the union nut hand-tight and attach water-
proof marking.
5. Tighten union nut with ³/4 rotation.
6. Check connection for leaks.
If the connection leaks:
1. Undo connection and check pipe for damage.
2. Tighten the union nut hand-tight and retighten
with the open-ended spanner with 1/8 to 1/4 turn, as
the clamping ring is already in a clamping posi-
tion.
Connect the unit to the heat source, domestic
water pipes and heating circuit
1. Install shut-off devices at the connections of the
heat source and heating circuit.
2. Insert the vent at the highest point of the heat
source and the heating circuit.
3. Recommendation: Fit a dirt filter with mesh size
0.9 mm onto the heat source inlet.
4. Connect the domestic hot water tank according to
the local regulations.
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
( "Technical data / Scope of supply", from
page 24) are not exceeded. Install pressure
reducer if necessary.
Subject to change without notice | 83057400aUK | ait-deutschland GmbH
operating overpressures

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
with at least 3 mm
IEC 60947-2)
● Note the level
( "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
miniature circuit-breaker
contact spacing (per
of the tripping current
15