15
SECTION V: WATER CONNECTIONS
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 (generally two weeks or more).
HYDROGEN GAS IS EXTREMELY FLAMMABLE.
To prevent the
possibility of injury under these conditions, we recommend a hot water faucet to be open for several minutes 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.
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
If sweat fittings are to be used,
DO NOT
apply heat to the nipples in front 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.
Instructions for 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. The COLD water inlet and HOT water outlet
are identified on the water heater. 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.
2. 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 expansion, such as pressure bulges and/or deformities. 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 a
steady stream of water flows through the faucets, close them and check all water connections for possible
leaks.
4.
NEVER
operate the water heater without first being certain it is filled with water.
Scalding
This water heater can deliver scalding
temperature water at any faucet in the system. Be
careful whenever using hot water to avoid scalding
injury. Certain appliances such as dishwashers
and automatic clothes washers may require
increased temperature water. By setting the
thermostat on this water heater to obtain the
increased temperature water required by these
appliances, you might create the potential for
scald injury. To protect against injury, you should
install an ASSE approved mixing valve in the
water system. This valve will reduce the point of
discharge temperature by mixing cold and hot
water in branch supply lines. Such valves are available from the manufacturer of this water heater or a local
plumbing supplier. The following chart details the relationship of water temperature and time in regard to
scald injury and may be used as a guide in determining the safest water temperature for your applications.
(52°C) can cause severe burns
are at highest risk of being
Children, disabled, and elderly
instantly or death from scalds.
Water temperature over 125°F
Feel water before bathing or
before setting temperature
available, contact local plumbing
supplier.
showering.
Temperature limiting valves are
Review this instruction manual
at water heater.
scalded.
