Typical Installation - Rheem Direct Vent Gas Tankless Water Heater Use And Care Manual

Installing the water heater:
Typical Installation of Water Heater
(Venting Required)
To Hot Water
Faucet(s)
Water Filter
Drain Valve
Drain Valve
Cold Water
Vacuum Relief Valve
(Not Supplied)
If required, install per local codes
and valve manufacturer's
instructions.
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.
22
1/4" Per Foot Downward Pitch
90° Elbow
Vent Adapter
Check
V a lve
Relief
Union
V a lve
Supply
6" (15 cm) Air Gap
Shut-off
V a lve
Drain
Hose
(To Suitable Drain)
PRIORITY
∞F
POWER
ON/OFF
Remote
Control
Power
Supply
Cord
Manual Gas
Appliance
Shut-off
(supplied)
Sediment
Gas Supply Line
Manual
Trap
Shut-off
Union
V a lve
Alternate Water Piping Arrangement
with Optional Valve Kit
Hot Water Service
Valve
Pressure Relief
Valve
Cap
Outside Wall
Wall Thimble
Vent Termination
With Protective
Screen
Outside Wall
Drain
Water
Water Inlet
Outlet
Cold Water
Service Valve