9
INSTALLATION INSTRUCTIONS
Water Piping
Refer to
Figure 9
for a typical installation. 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 water 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 disconnected, if
servicing is required. When assembling the hot and
cold piping, use a good food grade of pipe joint
compound, and ensure all fittings are tight. It is impera-
tive that open flame is not applied to the inlet and out-
let 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
.
Temperature and Pressure-Relief Valve
DO NOT
plug the temperature and pressure-
relief valve or its discharge line.
DO NOT
remove
the relief valve. Make sure the relief valve is
properly sized for the water heater. If the relief
valve continuously discharges water, call a qualified
service technician to correct the problem. Failure
to follow these instructions can result in property
damage, personal injury, or death.
To protect from excessive pressure and/or tempe -
rature, the manufacturer has installed a temperature
and pressure-relief valve that meets the requirements
of the Standard for Relief Valves and Automatic Gas
Shut-Off Devices for Hot Water Supply Systems,
CSA 4.4, in Canada, and ANSI Z21.22, in the United
States. This relief valve has a maximum set pressure
that does not exceed the hydrostatic working
pressure of the water heater (150 psi = 1,035 kPa)
and a BTU/h rating equal to or greater than the input
rating, as shown on the water heater rating plate. It
should never be plugged or removed from the
opening marked for it on the water heater.
If this relief valve should need to be replaced, use
only a new temperature and pressure-relief valve.
Never install an old or existing relief valve, as it
may be damaged or inadequate for the working
requirements of the new water heater. This new
relief valve must meet all local codes or, at a mini-
mum, the requirements listed above. Never install
any other type of valve between the relief valve and
the water heater.
A discharge line must be installed into the relief valve.
The discharge line:
•
Must not be smaller than the outlet pipe size of the
relief valve.
•
Must not terminate less than six (6) inches (15.2 cm)
and not more than twelve (12) inches (30.5 cm)
above a floor drain.
•
Must not be restricted in any way. Do not thread,
cap, or in any way restrict the end of this outlet.
•
Must be of a material capable of withstanding 210˚F
(99˚C) without distortion.
•
Must be installed to allow complete drainage of the
relief valve and discharge line.
•
must terminate at an adequate free-flowing drain.
Pressure Build-up in a Water System
When the water heater operates, the heated water
expands creating a pressure build-up. This is a
natural function and is one of the reasons for
installing a temperature and pressure-relief valve.
High Temperature
Silicone Sealant
\
0
3'' Hose
Clamp
Thread Cutting
Screw (3)
Water Heater
Flue Reducer
\
0
3'' Flexible Pipe
\
0
6'' Flexible Pipe
Air Boot
Extrusion
Figure 7
WARNING
A
Minimum rise
1/4''/ft (21mm/m)
Figure 8
