Operational Checklist - State Water Heaters SBD71120NE Installation Operation & Maintenance

This checklist in conjunction with "TROUBLESHOOTING" and the "SEQUENCE OF OPERATION" should be used as an on-the-job
troubleshooting guide to identify the cause of incorrect system operation and suggest a remedy for its correction. Because
improper piping and wiring can result in unsatisfactory system performance, it is suggested that the installation by examined
before using the checklist. Be sure to refer to the correct piping and wiring diagram for the type of system that is installed.
COMPLAINT
*Water not hot enough.
*Insufficient hot water
*See WATER TEMPERATURE
WARNING (on page 27)
Water temperature too hot.
Heater makes sounds: sizzling. Condensation on outside of
Rumbling.
Ticking or metallic sounds.
Pounding.
Combustion noises.
Water leaks.
Gas odors.

OPERATIONAL CHECKLIST

CAUSE
Thermostat set too low.
Thermostat out of calibration. Call serviceman.
Thermostat set too low.
Thermostat out of calibration. Call serviceman.
Main manual gas shutoff
valve partially closed.
Heater too small for demand. Space usage to give heater
Thermostat differential is
too wide.
Heater recovery is slower.
Draft hood not installed or
one or more flue baffles.
Thermostat set too high.
tank - normal.
Sediment accumulation on
bottom of tank.
Expansion and contraction-
normal.
Air chambers in piping have
become waterlogged.
Too much primary air.
Overfired heater. Incorrect
burners or orifice for types
of gas used.
Drain valve not closed tightly.
If leakage source cannot be
corrected or identified, call
serviceman.
Heater is overfired.
Possible gas leaks.
REMEDY
USER
Set thermostat dial to
a higher temperature.
Set thermostat dial to a
higher temperature.
Open main manual gas
shutoff valve to fullest extent.
time to restore water
temperature.
Call serviceman.
Call serviceman.
Call serviceman.
Set thermostat to a
lower setting.
Drain a quantity of water
through drain valve. If
rumbling persists, call
a serviceman.
Drain piping system and
refill. Heater must be off
while this is being done.
Adjust shutters.
Call serviceman.
If drain valve cannot be
closed tightly, replace.
Shut off gas supply to heater Repair or in case of suspected
and close cold water inlet
valve to heater.
Shut off gas supply to
heater and call serviceman. Check for obstructed vent line.
Shut off gas supply to
heater and call gas
company at once.
34
SERVICEMAN
Recalibrate thermostat. If
thermostat cannot be recalibrated,
replace.
Recalibrate thermostat. If
thermostat cannot be recalibrated,
replace.
Replace dual bulb controller if
differential is greater than 4°F.
Check gas input. If incorrect,
adjust gas pressure or replace
main burner orifice.
Install draft hood or baffles as
furnished with unit.
Delime heater.
Check and correct as necessary.
tank leakage, be certain to confirm
before replacing heater.
Check for sooted flue passage.
Check backdraft or lack of draft.
Draft hood may be improperly
installed or not sized properly.