Installation Guide

Residen al Standard Gas Water Heater Use and Care Guide • 21
INSTALLATION
Residen al Standard Gas Water Heater Use and Care Guide • 21
INSTALLATION
2
Connect the cold water supply
using 3/4 inch Na onal Pipe
Thread “NPT” to the fi  ng marked “C”
(COLD).
For ease of removing the water heater
for service or replacement, connect
the water pipes with a coupling
called a union. We recommend using
a dielectric-type union ( available at
your local plumbing supplier). Dielec-
tric unions can help prevent corro-
sion caused by  ny electric currents
common in copper water pipes and
can help extend the life of the water
heater
NOTICE: Most water heater models
contain energy saving heat traps in the
inlet and outlet connec ons. Do not
remove the heat traps.
3
Connect the hot water supply
using 3/4 inch NPT to the
fi  ng marked “H” (HOT).
4
Install insula on (or heat
tape) on the water pipes
especially if the indoor
installa on area is subject to freezing
temperatures. Insula ng the hot water
pipes can increase energy effi ciency.
5
Adjust (or install) the home’s
Pressure Reducing Valve to
50-60 psi and install a Thermal
Expansion Tank.
Figure 28 - A Pressure Reducing Valve is required
if your home’s water pressure is above 80 psi.
Figure 29 - The Thermal Expansion Tank should
be pressurized with air, using a hand pump, to
match the home’s incoming water pressure.
Step 9:
Verify Connec ons and
Completely Fill Tank
To remove air from the tank and allow
the tank to fi ll completely with water,
follow these steps:
1
Remove the aerator at the
nearest hot water faucet. This
allows debris in plumbing
system to be washed out of the pipes.
2
Turn the cold water supply
back on and fi ll the tank.
3
Open a hot water faucet and
allow the water to run un l it
fl ows with a full stream.
4
Let the water run full stream
for three minutes.
5
Close the hot water faucet
and replace the aerator.