Checklist For Plumbing - Rinnai REU-VA1320WF-US Operation And Installation Manual

Connect Water Heater to Water Supply
Water connections to the water heater should follow
all state and local plumbing codes.
If this is a standard installation, refer to the Piping
Diagram for Basic Installation.
1. Use of this layout should provide a trouble free
installation for the life of the water heater. Before
making the plumbing connections, locate the
COLD water inlet and the HOT water outlet. These
fittings are both 3/4" N.P.T. male thread. Make
sure that the dip-tube is installed in the cold wa-
ter inlet. Install a shut-off valve close to the water
heater in the cold water line. It is recommended
that unions be installed in the cold and hot water
lines so that the water heater can be easily dis-
connected, if servicing is required.
2. When assembling the hot and cold piping, use a
good food grade of pipe joint compound, and en-
sure all fittings are tight. It is imperative that open
flame is not applied to the inlet and outlet fittings,
as heat will damage or destroy the plastic lined
fittings. This will result in premature failure of the
fittings, which is not covered by the warranty.
Filling the Water Heater
DO NOT OPERATE THIS WATER HEATER UNLESS IT IS
COMPLETELY FULL OF WATER. To prevent damage to
the appliance all air must be relieved from the system
and a hot water fixture must be flowing water before
the water heater is plugged in and turned on. To
ensure safe and effective operation of the water
heater use the following filling procedure:
To fill the water heater:
1. Ensure the drain valve located at the bottom
of the tank is closed.
2. Open nearest hot water fixture in the
system.
3. Open the cold supply valve to the water
heater.
4. Keep the hot water fixture open until the
tank is filled and constant flow is obtained at
the fixture.
5. Check water heater connections and
plumbing system for damage or leaks. Repair
if needed.
22

Checklist for Plumbing

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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.
□
Ensure that the temperature & pressure relief
valve is installed.
□
Clean the inlet water filter. Refer to the "Water
Filter Inspection, Detection and Cleaning" section
in this manual for the water filter cleaning
procedure.
□
Check for proper water pressure to the water
heater. Minimum water pressure is 20 psi. Rinnai
recommends 30-50 psi for maximum
performance.
RH180 Manual