Electrical Connections And Wiring - Pentair ULTRATEMP ETi 220 Installation And User Manual

Electrical Connections and Wiring

RISK OF ELECTRICAL SHOCK OR ELECTROCUTION.
This heater 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 heater.
Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper
operation after servicing.
If, while there is line voltage connected to the heater, you touch either line voltage terminal with any 24VAC wire that is connected to the
control board, you will immediately destroy the control board and void the warranty.
General Information
Wiring connections must be made exactly as shown in the
wiring diagrams on pages 14-15.
The UltraTemp ETi™ Hybrid Heater includes a definite
means of grounding and bonding. There is a ground lug
inside the heater electrical compartment and a bonding lug
on the lower right side, adjacent to the service connections.
Enclose the incoming AC power line to the heater in an
approved flexible conduit connected directly to the service
port. Run wiring inside the heater into the main electrical
compartment on the inside of the upper right side of
the heater. Refer to page 35, "Electrical Supply Voltage
Requirements" to verify field wiring requirements.
Bonding
The National Electrical Code and most other codes
require that all metallic components of a pool structure,
including reinforcing steel, metal fittings, and above
ground equipment be bonded together with a solid copper
conductor not smaller than 8 AWG. For Canada, a 6 AWG
or larger solid copper bonding conductor is required. The
heater, along with pumps and other pool equipment must be
connected to this bonding grid.
A bonding lug is provided on the lower right side of the
heater base, by the electrical and gas connections. See
Figure 18.
This heater must be connected to a bonding grid with a solid
copper wire not smaller in diameter than 8 ga. For Canadian
installations a solid copper wire not smaller in diameter than 6 ga should be used.
Figure 18
Bonding
Lug
Pathway for
Electrical
Input
Main Power
Electrical wiring to the heater 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 certified or qualified electrician.
The following is the procedure to wire the heater to the
electrical source:
Be sure the power to the circuit for the heater is
turned off.
1. Remove the long side service panel of the heater
cabinet. There is no need to remove the star-head
screws.
2. Remove the short side service panel to the heater
electrical compartment.
3. Remove the sheet metal cover from the main
electrical compartment.
4. 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 right side of the heater. See
Figure 18.
5. Connect the power leads to the bottom terminals
on the main compressor contactor as shown in the
wiring diagram. See page 15.
6. Verify that all other contactor wires are secure, they
may have loosened during shipment.
7. Connect the ground wire to the ground lug provided
on the bottom of the electrical compartment.
8. Replace the sheet metal cover over the main
electrical compartment.
9. Replace the short side service panel and reinstall
screws to hold it in place.
10. Replace the long side service panel.
11. Connect a copper bonding wire (8 AWG) (6 AWG
in Canada) to the bonding lug on the side of the
heater.
ULTRATEMP ETI™ Hybrid Heater Installation and User's Guide
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