UltraTemp
®
Heat Pump Installation and User’s Guide
11
Electrical Connections
WARNING
—
Risk of electrical shock or electrocution.
This heat pump contains wiring that carries high voltage. Contact with these wires could result in
death or serious injury to pool or spa users, installers, or others due to electrical shock, and may also
cause damage to property. Always disconnect power circuit before connecting the heat pump.
CAUTION
—
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after servicing.
General Information
Wiring connections must be made exactly as shown in the wiring diagram found on the inside of the
heat pump access panel, see
Figures 18-20
on
pages 32-34
. The heat pump must include a defi nite
means of grounding and bonding. There is a ground lug inside the heat pump electrical compartment
and a bonding lug on the left side of the heat pump.
Main Power
Electrical wiring to the heat pump must be in accordance with the latest edition of the National Electric
Code (NEC), ANSI/National Fire Protection Association (NFPA) 70 in the United States, and in Canada,
the Canadian Electrical Code (CEC) C22.1, unless local code requirements indicate otherwise. All
wiring must be done by a certifi ed electrician.
The following is the procedure to wire the heat pump to the electrical source:
Be sure the power to the circuit for the heat pump is turned off.
1. Remove the front left panel of the heat pump cabinet, (
you do not need to remove the torque head
screw at the top left corner
).
2. Remove the service panel to the heat pump electrical compartment. (Front left corner of unit)
3. Electrical supply lines must be run through watertight conduit. Run the wires and conduit from the
power source and connect them to the conduit connection on the left side of the heat pump.
4. Connect the power leads to the bottom terminals on the main compressor contactor as shown in the
wiring diagram.
5. Verify that all other contactor wires are secure, they may have loosened during shipment.
6. Connect the ground wire to the ground lug provided on the bottom of the electrical compartment.
7. Replace the service panel and reinstall screws to hold it in place.
8. Replace the front left panel.
9. Connect a copper bonding wire (8 AWG) to the bonding lug on the left side of the heat pump.
Bonding
CAUTION
—
This heater must be connected to a bonding grid with a solid copper wire not smaller in diameter than 8 ga.
The National Electrical Code and most other codes require that all metallic components of a pool
structure, including reinforcing steel, metal fi ttings, and above ground equipment be bonded together
with a solid copper conductor not smaller than 8 AWG. The heat pump, along with pumps and other
pool equipment must be connected to this bonding grid. A bonding lug is provided on the left side of
the heat pump to ensure this requirement is met.