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
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TABLE 8. GENERAL TROUBLESHOOTING GUIDELINES
These guidelines should be used by a qualied service agent.
Symptom Problem Corrective Action
WATER LEAKS
Improperly sealed, hot or cold supply connection, relief
valve, drain valve, or thermostat threads.
Tighten threaded connections.
Leakage from other appliances or water lines. Inspect other appliances near water heater.
Condensation of ue products. See Condensation (page 25).
LEAKING T&P VALVE
Thermal expansion in closed water system. Install thermal expansion tank (DO NOT plug T&P valve).
Improperly seated valve.
Check relief valve for proper operation (DO NOT plug T&P
valve).
SMELLY WATER
High sulfate or mineral content in water supply. Drain and ush heater thoroughly, then rell.
Bacteria in water supply. Chlorinate or aerate water supply.
PILOT WILL NOT LIGHT
Gas control knob not positioned correctly. See the Lighting Instructions on the water heater’s label.
Main gas supply off. Turn on main gas shutoff valve.
Thermopile malfunction. Replace pilot/thermopile assembly.
No spark. Locate piezo switch on thermostat. Replace if needed.
BURNER WILL NOT STAY
LIT
Thermopile malfunction. Replace pilot/thermopile assembly.
Defective Gas Control. Replace Gas Control.
PILOT OUTAGE
Dirty pilot burner. Clean pilot assembly.
Thermopile malfunction. Replace pilot/thermopile assembly.
Defective Gas Control. Replace Gas Control.
Thermopile tip is not in contact with pilot ame. Insert thermopile correctly.
NOT ENOUGH HOT
WATER
Heater not lit or thermostat not on. See Lighting Instructions on the water heater’s label.
Thermostat set too low. See Temperature Regulation (page 24).
Heater undersized. Reduce hot water use.
Low gas pressure. Contact your gas supplier.
Incoming water is unusually cold. Allow more time for heater to re-heat.
Leaking hot water pipes or xtures. Have plumber check and repair leaks.
High temperature limit switch activated. Contact a service agency to determine cause.
WATER TOO HOT Thermostat set too high. See Temperature Regulation (page 24).
WATER HEATER
SOUNDS
Condensation dripping on burner. See Condensation (page 25).
SIZZLING OR RUMBLING Sediment or calcium in bottom of heater tank.
Clean sediment from tank. See Tank Cleanout Procedure
(page 30) .
SOOTING Improper combustion.
No adjustment available. Contact a service agency to
determine cause.
VENT GAS ODORS
Lack of supply air.
Contact a service agency to determine cause.
Improperly installed vent piping.
Downdraft.
Poor combustion.