32
Maintenance and Service
The unit should be checked once a year or as necessary by a certi
ed and trained
licensed
technician. If repairs
are needed, the repairs should be done by a certi
ed and trained
licensed
technician.
The following systems and parts should be checked at least once a year.
Temperature pressure relief valve:
Manual operation of the pressure relief valve to ensure correct operation.
Thermistor:
Remove the thermistors from unit and check for mineral coating - A mineral coating on the
thermistor requires cleaning
Be sure the venting is properly connected to prevent escape of dangerous flue gases which could cause
deadly asphyxiation.
Obstructions could cause improper venting. The combustion and ventilation air
ow must not be obstructed.
Damage or deterioration which could cause improper venting or leakage of combustion byproducts.
□
Systems and Parts Check
Physical Damage:
If the water heater has been subjected to
re,
ood, or physical damage, turn off the manual
gas shutoff valve and do not operate the water heater again until it has been checked by quali
ed personnel.
Temperature Setting:
Hotter water increases the risk of scalding injury.
Venting System Inspection:
A visual inspection should be made on the venting system at least once a year.
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□
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●
●
Clean Up:
The air intake hole on the
right side
of the water heater should be checked.
Clean as needed to prevent the entry of water, insects, rodents or other foreign materials such as fallen leaves
and dust that could cause blockages. Do not obstruct the
ow of combustion air and exhaust air
ow.
Water Strainer:
The water strainer should be checked once a year. It protects valve from dirt and pipe scale.
Self-clean by opening valve or hose connected to a blow-off outlet.
Sediment Buildup:
Over time, sediments from water supply could settle inside the tank and caused water heater
to lose water holding capacity. It is recommended that the water heater to be drained down completely once
every other year to
ush out the sediments. Buildup of sediment in faucet aerators, showers heads and screens
could also impair water flow and cause the water heater to deliver less than its full output, or to shut down
completely. Check any of these screens or shower heads on your faucets periodically and clean as necessary.
Burner Ignition:
Water heater has an automatic ignition system. Once you open a hot water tap, the
system
electronically ignites the burners. You can see the burner
ame via
ame inspection hole.
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Clean Out of Condensate Trap:
Over time, blockage of the trap by debris may occur when the condensate
cannot be released, causing the unit to go into error and shut down. When this occurs, the condensate trap must
be cleaned. Please refer to procedures on page 14.
Service & Cleaning of the Burner:
Only specially trained and authorized personnel are permitted to service the
burner.
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□
Turn off the electrical power supply, the manual gas control valve, and the manual water control valve before
servicing.
WARNING
!
!
Flame Inspection Hole
□
Summary of Contents for GU125T
Page 3: ...3 Included Accessories Optional Accessories...
Page 5: ...5 Dimensions GU125T 518 11 12 1125 GU160T 518 11 12 1160...
Page 6: ...6 Dimensions GU125T 518 11 12 1125 GU160T 518 11 12 1160...
Page 7: ...7 Dimensions GU125T 518 11 12 1125 GU160T 518 11 12 1160...
