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48
INSTALLATION INSTRUCTIONS
Water Supply (cont.)
Open the drain valve in the COLD water outlet line
to check the water flow through the water heater.
Close the shut-off valve and remove, clean, and
replace the water filter.
NOTICE:
Be sure to connect the COLD water inlet and the
HOT water outlet as shown on the water heater. If
reversed, the water heater will not function.
The flow rate of HOT water may vary when more
than two faucets (appliances, fixtures, etc.) are
being used simultaneously.
The pipes MUST be completely drainable. If the
HOT water faucets are located at a point higher
than the water heater, place a drain valve at the
lowest point.
It is recommended to use unions and flexible
copper connections at the COLD and HOT
water lines. They allow the water heater to be
disconnected easily for servicing.
Use the following guidelines when connecting the
HOT WATER OUTLET:
Connections between the water heater and point(s)
of use should be as short as possible.
Local codes shall govern the piping used for water
connections.
To conserve energy and to prevent freezing,
insulate both COLD and HOT water supply lines.
DO NOT insulate drain line or pressure-relief valve.
4
Service valve kits can attach to all tankless water
heater systems. All kits include two full-port
isolation valves to be used in the COLD and HOT
water lines. When installed, these valves allow one
person full diagnostic testing and ease of flushing
the system. Contact your distributor or place of
purchase for availability and installation information.
Cold Water
Service Valve
Hot Water
Service Valve
Hot Water
Service Valve
Pressure
Relief Valve
Relief
Valve
Water
Outlet
Water
Outlet
Water
Inlet
Water
Inlet
Drain
Drain
Alternate Water Piping Arrangement With Preferred Valve Kit
Plumbing
5
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