User Guide
Table Of Contents
- Safe Installation, Use and Service
- APPROVALS
- General safety INFORMATION
- Introduction
- Installation Considerations
- Installation requirements
- Gas Supply Systems
- Gas Pressure Requirements
- Supply Gas Regulator
- Mixing Valves
- Water Piping
- Temperature-Pressure Relief Valve
- Filling the Water Heater
- Air Requirements
- Unconfined Space
- Confined Space
- Fresh Air Openings For Confined Spaces
- Outdoor Air Through Two Openings
- Outdoor Air Through One Opening
- Outdoor Air Through Two Horizontal Ducts
- Outdoor Air Through Two Vertical Ducts
- Air From Other Indoor Spaces
- Venting
- Gas Piping
- Sediment Traps
- Temperature Regulation
- For Your Information
- Periodic Maintenance
- Venting System Inspection
- Burner Inspection
- Burner Cleaning
- Air Shutter Adjustment
- Housekeeping
- Anode Rod Inspection
- Temperature-Pressure Relief Valve Test
- Periodic Removal of Lime Deposits From Tank Type Commercial Water Heaters
- Deliming Solvents
- Tank Cleanout Procedure
- Deliming Using Flo-Jug Method
- Draining and Flushing
- Service
- Leakage Test Points
- Water Piping Diagrams
- Commercial Water Heater Limited Warranty
8
• Sensors mounted in the drain pan that trigger an
alarm or turn off the incoming water to the water
heater when leakage is detected.
• Sensors mounted in the drain pan that turn off the
water supply to the entire home when water is
detected in the drain pan.
• Water supply shut-off devices that activate based on
the water pressure differential between the cold water
and hot water pipes connected to the water heater.
• Devices that will turn off the gas supply to a gas water
heater while at the same time shutting off its water
supply.
INSTALLATIONS IN AREAS WHERE FLAMMABLE
LIQUIDS (VAPORS) ARE LIKELY TO BE PRESENT OR
STORED (GARAGES, STORAGE AND UTILITY AREAS,
ETC.): Flammable liquids (such as gasoline, solvents,
propane [LP or butane, etc.] and other substances such
as adhesives, etc.) emit ammable vapors which can be
ignited by a gas water heater’s pilot light or main burner.
The resulting ashback and re can cause death or
serious burns to anyone in the area, as well as property
damage. If installation in such areas is your only option,
then installation must be accomplished in a way that
the pilot ame and main burner ame are elevated from
oor at least 18 inches. While this may reduce chances
of ammable vapors, from a oor spill being ignited,
gasoline and other ammable substances should never
be stored or used in the same room or area containing a
gas water heater or other open ame or spark producing
appliance.
NOTE: Flammable vapors may be drawn by air currents
from other areas of the structure to the appliance.
Also, the water heater must be located and/or protected
so it is not subject to physical damage by a moving
vehicle.
This water heater must not be installed directly on
carpeting. Carpeting must be protected by metal or wood
panel beneath the water heater extending beyond the full
width and depth of the water heater by at least 3” (76.2
mm) in any direction, or if the water heater is installed in
an alcove or closet, the entire oor must be covered by
the panel. Failure to heed this warning may result in a re
hazard.