Raypak 399B-2339B Operations Instructions download pdf (Page 21)

Electrical Power Connections

Installations must follow these codes:

• National Electrical Code and any other national,

state, provincial or local codes or regulations hav-

ing jurisdiction.

• Safety wiring must be NEC Class 1.

• Heater must be electrically grounded as required

by the NEC.

• In Canada, CSA C22. 1 C.E.C. Part 1.

The heater is wired for 120 VAC, <12 amps. The volt-

age is indicated on the tie-in leads. Consult the wiring

diagram shipped with the heater in the instruction

packet. The remote tank control stat, thermostat, or

electronic heater control (as applicable) may be con-

nected to the stage selector terminal (See wiring

diagram). 24 VAC is supplied to this connection

through the heater transformer. DO NOT attach any

voltage to the stage selector terminals. Before

starting the heater check to ensure proper voltage to

the heater and pump.

Install a separate disconnect means for each load.

Use appropriately sized wire as defined by NEC, CSA

and/or local code. All primary wiring should be 125% of

minimum rating.

If any of the original wire as supplied with the heater

must be replaced, it must be replaced with 105°C wire

or its equivalent.

Field-Connected Controllers

It is strongly recommended that all individually-pow-

ered control modules and the heater should be

supplied from the same power source.

Check the Power Source

NOTE: Field-supplied isolation relays should be

installed when field-connected controllers are

mounted more than 50 equivalent feet (18 Ga) from

heater.

WARNING: Using a multi-meter, check the

following voltages at the terminal block inside the

unit. Make sure proper polarity is followed and house

ground is proven. (See Fig. 18.)

CIRCUIT

BREAKER

WHITE

GROUND

BLACK

GREEN

AB C

Fig. 16: Wiring Connections

Check the power source:

AC = 108 VAC Minimum, 132 VAC MAX

AB = 108 VAC Minimum, 132 VAC MAX

BC = <1 VAC Maximum

If the heater does not have a factory-wired stage con-

troller, it is factory-wired in an on-off configuration with

other stage terminals jumpered.

To field-connect a stage controller, remove factory-

installed jumpers and wire stage controller as shown in

Fig. 19–22.

Making the Electrical Connections

Refer to Fig. 16–22.

1. Verify that circuit breaker is properly sized by

referring to heater rating plate. A dedicated circuit

breaker should be provided.

2. Turn off all power to the heater. Verify that power

has been turned off by testing with a multi-meter

Fig. 17: Multi-meter

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Raypak 399B-2339B Operations Instructions Page 21

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