Section V: Water Connections - Bradford White EF120T Installation & Operation Manual With Troubleshooting Manual

High efficiency commercial gas water heater

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Table Of Contents

Table of Contents

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.

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.