23
Check the Power Source
A
WARNING: Using a multi-meter, check the following
voltages at the circuit breaker panel prior to connecting
any equipment. Make sure proper polarity is followed
and house ground is proven.
Check the power source:
• AC = 104VAC Minimum, 126VAC MAX
• AB = 208VAC Minimum, 252VAC MAX
• BC = 104VAC Minimum, 126VAC MAX
CIRCUIT
BREAKER
WHITE
HOT (L2)
GROUND
BLACK
HOT (L1)
GREEN
Figure 22. Wiring Connections
Figure 23. Multi-meter
Injector Pump Wiring
The 3-phase cold water run pump is shipped loose and
must be eld wired.
Before Starting
1. Turn o power to the unit at the circuit breaker.
2. Turn o gas supply.
3. Shut-o the water supply to the heater and, if
necessary, drain water from the system.
4. Locate the pump junction box and wiring decal shown
in Figure 24.
5. Remove the pump junction box cover shown in
Figure 24 and locate the 9 wires inside.
DECAL
COVER
Figure 24. Pump Wiring Decal and Junction Box
6. Wire in accordance with the low-voltage (230VAC)
decal located next to the pump junction box (do not
connect high-voltage 460 volt power to the control
box).
7. In the absence of the pump-mounted decal, use Table
F to complete the wiring between the cold water run
control box and the 3-phase injector pump. Use wire
nuts (field supplied) to complete these connections
and ensure that all connections are tight.
230VAC 3 ø Line Low Voltage Pump Wiring
Black Orange (3) and Gray (9)
Red Red (8) and White (2)
White Pink (7) and Blue (1)
———————
Yellow (4) and Black (5) and Violet
(6)
Green Ground Lug
Table F. Cold Water Run Control Panel and Injector Pump
Wiring
8. Re-install the injector pump junction box cover.
9. Turn on the water and gas supply.
10. Turn the electrical supply on to the heater and to the
cold water run system.
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