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INSTALLATION INSTRUCTIONS
General
NOTICE:
The National Fuel Gas Code (NFGC) and CAN/CSA B149.1 mandate a manual gas shut-off valve.
See NFGC/B149.1 for complete instructions. Local codes or plumbing authority requirements may vary from the instructions or
diagrams provided and take precedence over these instructions.
Typical Installation of Direct-Vent Water Heater
Water Heater Installation (cont.)
To Hot Water
Faucet(s)
Drain Valve
Wall
Plate
(Recommended)
Water
Filter
Cold Water Supply
Shut-Off Valve
Power
Supply
Cord
Union
Union
Union
Manual Gas
Supply Line
Shut-Off Valve
Upward Slope to
outside termination
Manual Gas
Shut-Off Valve
(Supplied)
Cap
Sediment Trap
Outside
Wall
90˚
Elbow
Relief
Valve
*Note: A flexible drain tube can be used.
To
Suitable
Drain
To
Suitable
Drain
Condensate
Drain*
Air Intake Pipe
Exhaust Vent Pipe
To Suitable Drain
Condensate
Drain
Condensate
Trap**
**Note: Condensate trap should be installed as close as practical to the water heater.
Union
Service
Valve
A similar condensate trap is allowed as long as it prevents rain, condensate or any
other liquid from entering into the water heater.
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