Gebwell Qi 10, Installation, Operation And Maintenance Manual

Page: 23 / 64

Gebwell Qi Installation, operation, and maintenance manual
23
7 ELECTRICAL
CONNECTIONS
7.1 General
Heat pump is connected to 400V (50GHz) electricity grid.
The heat pump's plug must not be connected to an
electrical outlet until the heat pump heating system is
filled with water. This can cause damage to the electric
heater, overheating protection, pumps or compressor.
All electrical equipment has been pre-wired at the factory.
If electrical accessories are installed to the heat pump,
wiring work must be performed by a qualified electrician.
•
The heat pump must be disconnected before
insulation measurement.
•
Heat pump wiring diagram can be found in
appendix
Electrical diagram
.
• If a circuit breaker is used for the heat pump, it
should be of type C.
•
Cabling of the heat pump's electrical accessories
should be made through the lead-through of
control centre on the back of the heat pump.
7.2 Power supply
The ground source heat pump’s power supply is
implemented with an easily connectable 32A power plug
connection (PT) and a 2 m cable. A 32A power socket is
required in the immediate vicinity of the ground source
heat pump. Even though the plug size is 32A, the heat
pump or supply cable must be equipped with a fuse
detailed in the technical specifications table. The plug
must be disconnected from the socket during
maintenance. Position the socket so that the plug can be
easily disconnected when necessary. The socket must be
marked with the sticker included in the heat pump delivery
"NO GROUND FAULT CIRCUIT INTERRUPTER
(GFCI), SOCKET IS TO BE USED FOR GROUND
SOURCE HEAT PUMP ONLY"
7.3 Soft starter / phase sequence
Heat pump’s compressor has a three-phase motor. It is
important that the phase sequence be connected correctly.
Pump notifies of incorrect phase sequence on the
controller screen. NOTE! Compressor's motor protection
switch (F1) must be ON.
If the pump’s phase sequence is incorrect, a LED light
begins to flash on the soft starter. NOTE! If the motor
protection switch is in the OFF position, the controller will
always give a notice:
Soft starter E25 failure
.
The phase sequence can be easily changed by turning the
phases in the plug. See soft starter failures in section
“
Failures.”
7.4 Outdoor sensor
The outdoor temperature sensor is equipped with
connector X3. The sensor has been connected to the
LED light