Sbn /Sbd30-150/199 Sequence Of Operation - State Water Heaters SANDBLASTER SBD30 150 Service Handbook
Self-cleaning induced draft multi flue commercial gas water heaters
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- Specifications (2 pages)
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SBN71-120 thru 85-390, SBD30-150/199 TANK TYPE COMMERCIAL
SBN /SBD30-150/199 SEQUENCE OF OPERATION
Sequence
1. Thermistors (probes) call for heat.
2. Inducer fan starts and provides draft.
3. Hot surface igniter = 20 sec. warm-up.
4. Main gas valve opens 4 sec. trial for
ignition. (Maximum 5 trials.)
5. Main burner ignites and proves.
6. Thermostat reaches the temperature
setting.
7. Main burners "OFF" - Auto restart after
60 min. - 20 sec blower
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GAS WATER HEATER SERVICE HANDBOOK
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