Connecting The Heat Pump To The Power Supply; Accessories; Safety Switch And Earth-Fault Breaker - IVT Optima 1000 Assembly, Commissioning And Maintenance Manual

Connecting the heat pump to the power supply

Connecting the heat pump to the power supply
Make sure the electricity has been switched off before connecting the heat
pump to the mains. Also check that cables and printed circuit cards are
intact. High and low current cables should be routed separately in order to
avoid interference on the sensors.
Virtually all electrical equipment, including Rego 603, is electrically
installed in the separate electric cabinet. The compressor, fan, sensors,
pressure switches, etc. are connected to a terminal box in the heat pump.
The cable between the terminal box (placed outdoors) and the electric
cabinet (placed indoors) is routed according to the diagram External
wiring diagram. (Select the diagram according to the operating mode.)
The following sensors are to be connected during installation:
- Heat transfer fl uid out
- Heat transfer fl uid in
- Hot water sensor
- Outdoor sensor
- Return radiator
- Room sensor (accessory)
- Mixing valve sensor, operating mode A
(accessory)

Accessories

Softstarter
(Art. no. 200815-1)
The compressor can be equipped with a softstarter to reduce the inrush
current. The softstarter is fi tted on the heat pump to the right of the
terminal box and connected as in Circuit diagram the Optima heat pump.
Heating cable
A drainage pipe from the heat pump's drip collector may need to be fi tted
with a heating cable. The heating cable is connected on terminals 11-12 in
the heat pump's terminal box. The following lengths are available as acces-
sories: Art. no: 109000
Art. no: 109001
Art. no: 109002

Safety switch and earth-fault breaker

Safety switch
All heat pumps must be preceded by a safety switch. This means it should
be possible to disconnect the entire electrical circuit if necessary.
Earth-fault breaker
If the heat pump is to be connected across an earth-fault breaker then a
separate earth-fault breaker for the heat pump is recommended . Comply
with applicable regulations.
The terminal box is
positioned on the heat
pump's left-hand side plate.
2m / 30W
3m / 45W
5m / 75W
46
!
Warning
For reasons of safety the main power
supply must be disconnected before
working on the heat pump.
The electric cabinet is placed indoors. Shown
here without the contact guard.