Installation Manual

H-Series Demand Duo™ 2 Installation and Operation Manual 37
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.
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.
• The water heater requires 120 VAC, 60 Hz power from a properly grounded circuit.
• When using the 5 ft (1.5 m) power cord (included with controller), plug it into a standard 3 prong 120
VAC, 60 Hz properly grounded outlet.
• Do no connect power to the commercial hybrid system prior to completing installation and the
system has been filled with water.
• 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
Not for use with
this product