RESIDENTIAL GAS, NON POWER VENTED, WATER HEATER
SERVICE HANDBOOK
State Water Heater Technical Training Department
© 2004 Ashland city, TN
5
INSTALLATION OF RESIDENTIAL GAS WATER HEATER Exhaust Vent to
Outside of Building
Union
See Manual and
Labels For Installation
Clearances Temperature And
Pressure Relief
Valve – Do Not
Reuse Old Valve.
Expansion Tank
Pressurize to Equal
Supply Water
Pressure
Water
Shut Off
V
alve
Temperature and
pressure relief valve
tube piped to within 6”
of drain.
Thermostat –
recommended starting
point - 120°F.
Safety Pan – Piped to
Drain
Drain
Inner and
Outer Doors –
Reinstall After
Lighting Pilot.
Air Is Drawn In For
Combustion. Keep
area clean and free
from flammables and
flammable vapors
Maximum Gas Supply
13.8” W.C. or ½ PSI
Minimum
4.5” W.C. –Natural Gas
11.0” W.C. Propane Gas
Installation Must Follow Local Codes and Instruction Manual Guidelines
Union
Typical Model
and Rating
Plate Location