20
SECTION VI: WATER CONNECTIONS
NOTE:
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 and front of the water heater. Make sure the
diptube is in place before making the cold water connection. Make the proper plumbing connections between the water
heater and the plumbing system to the house. Install a shut-off valve in the cold water supply line.
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 a steady stream of water flows
through the faucets, close them and check all water connections for possible leaks.
NEVER OPERATE THE WATER
HEATER WITHOUT FIRST BEING CERTAIN IT IS FILLED WITH WATER.
If sweat fittings are to be used,
DO NOT
apply heat to the nipples on top or side 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.
Keep clear of the combination 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.
CAUTION
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 (generally two weeks or more). Hydrogen gas is extremely flammable. To prevent the possibility of
injury under these conditions, we recommend the hot water faucet to be open for several minutes at the kitchen sink
before you use any electrical appliance, which 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.
WARNING
If this water heater is installed in a closed water supply system, such as the 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. Your water supplier or local plumbing inspector should be
contacted on how to control this situation.
NOTICE
Summary of Contents for POWERED DIRECT VENT SERIES GAS-FIRED COMMERCIAL WATER HEATER
Page 17: ...17 Figure 6 Figure 7A Figure 7B...
Page 60: ...60 SECTION XIV NOTES...
