PLUMBING INSTALLATION INSTRUCTIONS:
1. Connect the cold water supply line to the right side of the unit (cold water inlet). It is
recommended that a manual shut off valve (ball valve) be installed at the cold water inlet so
that a convenient water shut off point is available for future maintenance.
2. Connect the hot water supply line to the left side of the unit (hot water inlet).
3. Before connecting pipes to the water hoses, it is extremely important to FLUSH the lines to
eliminate any plumbing paste or residue in the lines. Flex water heater hoses are
recommended for ease of installation.
4. After both water lines are fastened securely, run water through the unit for at least 2 to 3
minutes to flush out any air pockets in the lines (PURGING). It is recommended that all faucets,
showers, etc. be run during this process. Failure to purge the lines of air can cause permanent
damage to the unit. This procedure MUST be performed before the electrical power is turned
on. Repeat the procedure after any maintenance to the water heater or home's plumbing
system is performed that may introduce air into the pipes.
5. Carefully inspect all connections, unions, and the pressure relief valve (if used) for leaks.
6. Install the water pan if needed (see special instructions for installation on a second floor or in
a heated attic on page 5)
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