18
Installing the water heater:
Typical Installation of Water Heater
NOTICE: The National Fuel Gas Code (NFGC) and B149 mandates a manual gas shut-off valve: See
NFGC/B149 for complete instructions. Local codes or plumbing authority requirements may vary from
the instructions or diagrams provided and take precedent over these instructions.
Vacuum Relief Valve
(Not Supplied)
If required, install per local codes
and valve manufacturer’s
instructions.
Water Inlet
Water
Outlet
Drain
Pressure Relief
Valve
Hot Water Service
Valve
Cold Water
Service Valve
Alternate Water Piping Arrangement
with Optional Valve Kit
Outdoor Models
Discharge
Line
(To Suitable Drain)
To Hot Water
Faucet(s)
Relief
Valve
Union
Drain Valve
6" (15 cm) Air Gap
Manual Gas
Appliance
Shut-off
(supplied)
Flue Terminal
Trap
Manual
Gas Supply Line
Shut-off
Va lve
Union
Cap
Cold Water
Supply
Shut-off
Va lve
Check
Va lve
Water Filter
Drain Valve
On/Off
Switch
Conduit
for wir-
ing to
unit.
Optional: Hard wired
or plug in to wall
¥
F
PRIORITY
POWER
ON/OFF
Remote
Control
