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Water Connections continued-
outlet are identified on the side and top of the water heater,
respectively. 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.
Maximum boiler water supply temperature to the indirect heat
exchanger must not exceed 240°F (116°C).
CAUTION
20
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