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INSTALLATION INSTRUCTIONS
Water Supply (cont.)
Water Supply Installation (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.
NOTICES:
• 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.
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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
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