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SECTION V
WATER CONNECTIONS
INSTALL TEMPERATURE AND PRESSURE RELIEF VALVE (if not factory installed)
INSTRUCTIONS FOR POTABLE CONNECTIONS
1. BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE MAIN WATER SUPPLY VALVE.
After shutting off the main water supply, open a faucet to relieve the water line pressure to prevent any water
from leaking out of the pipes while making the water connections to the water heater. After the pressure has
been relieved, close the faucet. The COLD water inlet and HOT water outlet are identified on the top of the
water heater. Install the mixing device supplied with the solar water heater, following the installation
instructions included with the mixing device. Make the proper plumbing connections between the mixing device
on the water heater and the plumbing system to the house. Install a shut-off valve in the cold water supply line.
2. If this water heater is installed in a closed water supply system, such as one having a back-flow preventer in the
cold water supply, provisions must be made to control thermal expansion. DO NOT operate this water heater in
a closed system without provisions for controlling thermal expansion. Warranties do not cover damages from
thermal expansions such as pressure bulges and/or deformities. A properly sized expansion tank will alleviate
most problems. Your water supplier or local plumbing inspector should be contacted on how to control this
situation.
3. After installation of the water lines, open the main water supply valve and fill the water heater. While the water
heater is filling, open several hot water faucets to allow air to escape from the water system. When steady
streams of water flow through the faucets, close them and check all water connections for possible leaks.
4. NEVER OPERATE THE WATER HEATER WITHOUT FIRST BEING CERTAIN THAT IT IS
FILLED WITH WATER.
WARNING
FAILURE TO INSTALL AND MAINTAIN A NEW, LISTED TEMPERATURE AND PRESSURE
RELIEF VALVE WILL RELEASE THE MANUFACTURER FROM ANY CLAIM WHICH MIGHT
RESULT FROM EXCESSIVE TEMPERATURE AND PRESSURES.
Hydrogen gas can be produced in an operating water heater that has not had water drawn from the tank
for a long period of time. HYDROGEN GAS IS EXTREMELY FLAMMABLE. To prevent the possibility
of injury under these conditions, we recommend the hot water faucet be opened for several minutes at the
kitchen sink before you use any electrical appliance that is connected to the hot water system. If hydrogen
is present, there will be an unusual sound such as air escaping through the pipes as hot water begins to flow.
Do not smoke or have open flame near the faucet at the time it is open.
Keep clear of the temperature and pressure relief valve discharge line outlet. The discharge may be hot
enough to cause scald injury. The water is under pressure and may splash.
Keep clear of the temperature and pressure relief valve discharge line outlet. The discharge may be hot
enough to cause scald injury. The water is under pressure and may splash.
Temperature and pressure relief valve discharge piping must be piped near the floor to eliminate potential of
severe burns. Do not pipe in any area where freezing could occur. Do not install any shut-off valves, plugs or
caps to the temperature and pressure relief valve or piping.
CAUTION
If sweat fittings are to be used, DO NOT apply heat to the nipples on top of the water heater. Sweat the
tubing to the adapter before fitting the adapter to the water connections. It is imperative that heat is not
applied to the nipples containing a plastic liner.