Electrical Requirements

DANGER

Failure to heed the following will result in injury or death.

 

  • Deactivate power while routing wiring to control board.
  • Follow all National Electric Codes (NEC) and/or State and Local guidelines.

WARNING

Failure to heed the following may result in injury or death.

 

  • The information contained in this section is intended for use by qualified electricians familiar with electrical service-industry safety standards and methods.
  • Locate the equipment disconnect as near to the heat pump as possible. Always satisfy applicable codes and standards.
  • Never mount power-disconnects directly to the heat pump.
  • In sizing power wiring, be especially aware of up-sizing requirements necessary due to wiring distances. Always satisfy applicable codes and standards.
  • AquaCal® heat pumps are designed to use copper conductors, only. Do not use aluminum wire.
  • If multiple heat pumps are on-site, confirm that the multiple heat pump configuration has been utilized. See "Connecting Multiple Heat Pumps (Primary / Secondary)" This will prevent multiple heat pumps attempting to start at the same time, causing an excessive power drop at start-up.

Electrical Standards

Table 2 - Standards
Standards Title
NFPA 70, Nat'l Elec. Code 2017 The electrical installation must conform to the current version of the National Electric Code (NEC), and all applicable local and state codes
IEC 60335-1 Household and similar electrical appliances - Safety - General Requirements
IEC 60335-2 Household and similar electrical appliances - Safety – Particular requirements for electrical heat pumps, air-conditioners, and dehumidifiers
UL 1995 & CSA C22.2 No. 236-15 Standard for Safety - Heating and cooling equipment

Grounding and Bonding

Follow local code requirements for proper grounding and bonding of heat pump equipment.

  • A bonding lug has been provided on the heat pump.
  • A bonding lug has been provided on the lower left hand corner of the electrical access panel.

Surge Suppression

The use of approved commercial surge protectors is strongly recommended.

Sizing the Electrical Service

Refer to equipment data plate for specific information required to size electrical service and over-current protection of the heat pump. Sizing is based on data plate information, wire size, wiring devices, and over-current protection per applicable local codes and standards. See "Identifying Model Specifications"

Minimum and Maximum Operating Voltage

The heat pump must operate within specified voltages.

NOTICE

Failure to heed the following may result in damage to equipment.

 

  • Operating equipment under higher or lower voltage conditions may result in damage to your compressor, motors or other electrical components. This damage will not be covered by the product warranty.
  1. Measure site voltage. The site voltage MUST be measured under “FULL LOAD” conditions. Activate all equipment using the same electrical panel as the heat pump.
  2. If measured site voltage is outside listed ranges, immediately deactivate equipment until site conditions have been corrected. If unsure of heat pump equipment rating, please see "Identifying Model Specifications".
Equipment Rating Minimum Site Voltage Maximum Site Voltage

B Voltage

(208 to 230 Volts)

Three Phase 60 hertz

 200 Volts 253 Volts

D Voltage

(380 to 420 Volts)

Three Phase 50 hertz

 361 Volts 441 Volts

G Voltage

(460 Volts)

Three Phase 60 hertz

 437 Volts 483 Volts

 

 

Please Note

ICM Digital Three-Phase Monitor

The Great Big Bopper® heat pump comes with an ICM phase-rotation monitor located inside the electrical panel.

The device protects the heat pump by preventing operation during abnormal voltage conditions.

  • If the unit fails to operate, a qualified technician should check the phase rotation monitor for faults preventing operation. Complete instructions for the ICM phase monitor are in the appendix. See "ICM Digital 3-Phase Monitor"