Installation / Operation Instruction Manual

Water Connections continued-

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. 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 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.

INSTRUCTIONS FOR BOILER CONNECTIONS

The indirect-fired heater connection labeled “To Boiler Return” should be

piped to the boiler return piping as close to the boiler as possible and

especially after any flow control or check valves in the space heating

return piping. The use of a union and a shut-off valve is recommended.

The use of a flow control or check valve is required to prevent back flow

through the water heater during operation of the space heating system.

Pipe and fittings between the boiler and indirect-fired water heater

should be ¾” diameter or larger.