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The water heater is not subject to corrosive
compounds in the air.
□
The water supply does not contain
chemicals or exceed total hardness that will
damage the heat exchanger.
□
Clearances from the water heater unit are
met.
□
Clearances from the vent termination / air
intake are met.
□
Ensure you have used the correct venting
products for the model installed and that you
have completely followed the venting
manufacturer's installation instructions and
these installation instructions.
□
Verify that the vent system does not exceed
the maximum length for the number of
elbows used.
□
Purge the water line of all debris and air by
closing the hot isolation valve and opening
the cold isolation valve and its drain. Debris
will damage the water heater. Use a
bucket or hose if necessary.
□
Ensure that hot and cold water lines are not
crossed to the unit and are leak free.
□
A manual gas control valve has been placed
in the gas line to the water heater.
□
Ensure that a pressure relief valve is
installed with a rating that exceeds the BTU
input of the water heater model. Refer to
the rating plate on the side of the water
heater for BTU input.
□
Clean the inlet water filter by closing the
cold and hot water inlet isolation (shut-off)
valves. Put a bucket under the filter at the
bottom of the water heater to catch any
water that is contained inside the unit.
Unscrew the water filter. Rinse the filter to
remove any debris. Install the filter and open
the isolation valves.
□
Check the gas lines and connections for
leaks.
□
Confirm that the gas inlet pressure is within
limits.
□
Confirm that the water heater is rated for the
gas type supplied.
Demand Duo
H-Series with SENSEI CX Installation Instructions
□
Confirm that the electricity is supplied from a
120 VAC, 60 Hz power source, is in a
properly grounded circuit, and turned on.
□
Verify the Thermistor wires are connected
properly from the PCB to the thermistors.
□
Confirm parameter settings are set
appropriately for the altitude.
□
Verify the system is functioning correctly by
connecting your manometer to the gas
pressure test port on the water heater.
Operate all gas appliances in the home or
facility at high fire. The inlet gas pressure at
the water heater must not drop below that
listed on the rating plate.
□
DO NOT introduce toxic chemicals such as
those used for boiler water treatment to the
potable water used for space heating.
□
If the water heater is not needed for
immediate use, then drain the water from the
heat exchanger.
□
Install the front panel.
□
Explain to the customer the importance of not
blocking the vent termination or air intake.
□
Explain to the customer the operation of the
water heater, safety guidelines, maintenance,
and warranty.
□
The installation must conform with local
codes or, in the absence of local codes, with
the National Fuel Gas Code, ANSI Z223.1/
NFPA 54, or the Natural Gas and Propane
Installation Code, CSA B149.1.
□
Leave this manual and the Rinnai
Tankless Water Heater manual taped to
the water heater, or give both manuals
directly to the consumer.
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