20 • Residen al Standard Gas Water Heater Use and Care Guide
INS
TALLA
TION
20 • Residen al Standard Gas Water Heater Use and Care Guide
INSTALLATION
3
For water heaters that are fed
by a solar water hea ng
system (or any other pre-
hea ng system), always install a
Thermosta
c Mixing Valve or other
temperature limi ng device in the
inlet water supply line to limit water
supply inlet temperature to 120°F.
Solar water hea
ng systems can
supply water with temperatures
exceeding 180°F and may result in
water heater malfunc on.
WARNING! Hot water provided by
solar hea ng systems can cause
severe burns instantly, resul ng in
severe injury or death.
Step 8:
Connect the Water
Supply
Note that all piping and components
connected to the water heater must
be suitable for use with potable water.
1
Determine the type of water
pipes in your home. Most
homes use copper water
pipes, but some use CPVC or cross-
linked polyethylene (PEX). Use
fi
ngs
appropriate for the type of pipe in
your home. Do not use iron or PVC
pipe.
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 from
Lowe’s ). Dielectric unions can help
prevent corrosion caused by ny elec-
tric currents common in copper water
pipes and can help extend the life of
the water heater.
IF YOU HAVE COPPER PIPES:
If your home has copper water pipes,
you can solder the water pipe connec-
ons or use compression
fi
ngs which
don’t require soldering. Compression
fi
ngs are easier to install than solder-
ing pipe. Check with local plumbing
o
ffi
cials to determine what types of
pipe materials are suitable for your
loca
on. Do not use lead-based solder.
NOTICE:
Do not solder pipes while
they are a ached to the water heater.
The water heater’s inlet and outlet
connec ons contain non-metallic parts
which could be damaged. The proper
way to connect the water heater to
copper water pipes is as follows:
• Solder a short length of pipe (about
a foot or so) to a threaded adapter
using only 95/5
n-an mony or
equivalent solder. A ach the thread-
ed adapters to the water heater’s
connec
ons (using Te
fl
on® tape or
pipe joint compound). Connect the
home’s water pipes by soldering,
keeping the connec ons at the water
heater cool with wet rags.
Compression
fi
ngs don’t require soldering.
Содержание G9-T5040NVR
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