IBC HPX 3, Installation And Operating Manual, Page: 37 / 68

6.8 Electrical connections
All electrical wiring to the hydronic heat pump (including grounding) must conform to local electrical
codes and/or to the National Electrical Code, ANS/NFPA No. 70 – latest edition, or to the Canadian
Electrical Code, C22.1 - Part 1.
6.8.1 Power management, quality and electrical protection
Note
The IBC hydronic heat pump (like any modern appliance that contains electronic
equipment) must have a “clean” power supply, and is susceptible to power surges and
spikes, lightning strikes and other forms of severe electrical “noise”. Power conditioning
equipment (surge protectors) may be required in areas where power quality is suspect.
In temporary or manual operation, for example in new construction heating, use a construction
thermostat or jumper with an in-line switch to control calls to the hydronic heat pump.
Do not turn off
the heat by removing power to the unit.
6.8.2 240VAC line-voltage hook-up
Line-voltage wiring is done within the field-wiring box (see Wiring diagrams on page 1 ), located at the
upper section of the service area. Connect the hydronic heat pump to the grid power using a
separate, fused circuit and on/off contactor within sight of the unit. Use appropriately-sized wire in
sheath or conduit properly anchored to the hydronic heat pump case for mains supply and pump
circuits.
Figure 15 Line voltage terminals
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6.8 Electrical connections