Demand Duo
™
H
-
Series Installation and Operation Manual
46
WARNING
•
Do not use an extension cord or adapter plug with this appliance.
•
The water heater must be electrically grounded in accordance with local codes and ordinances or, in
the absence of local codes, in accordance with the National Electrical Code, ANSI/NFPA No. 70.
•
The water heater is equipped with a three
-
prong (grounding) plug for your protection against shock
hazard and should be plugged directly into a properly grounded three
-
prong receptacle. Do not cut
or remove the grounding terminal from this plug. This appliance includes an integrated junction box
for hard wire or three
-
prong plug.
When connecting the power supply, follow these guidelines:
•
Do not rely on the gas or water piping to ground the water heater. Ground locations are provided
inside the water heater and inside the provided junction box.
•
The water heater requires 120 VAC, 60 Hz power from a properly grounded circuit.
•
When using the 6 ft (1.8 m) power cord (included with controller), plug it into the provided 3 prong
120 VAC, 60 Hz properly grounded outlet or hard wire to the integrated junction box.
•
The Tankless Water Heater wiring diagram is located on the inside of the water heater front cover.
The controller wiring diagram is located on the inside front cover of the controller.
B W
R
Bl Bl
B R W G
B W G
B
-
Black
R
-
Red
W
-
White
G
-
Green
Bl
-
Blue
Figure 52
Do no connect power to the com-
mercial hybrid system prior to
completing installation and the
system has been filled with water.
ATTENTION
Displays set
temperature
