ULTRAFORCE COMMERCIAL GAS WATER HEATER
SUF 120 thru 400 SERVICE HANDBOOK
CONTROLS – PRESSURE SWITCHES – SUF 120 through 250
BLOCKED INLET
PRESSURE SWITCH
MODEL PRESSURE
All0.85”WC
Norm ally Clos e d / Ope n on a Ris e in Pres s ure
Tolerance
LOW GAS PRESSURE
| SWITCH |
MODEL | PRESSURE |
Natural | 4.0”WC |
LP | 8.0”WC |
Norm ally Ope n / Clos e on a Ris e in Pre s s ure Tole rance
BLOCKED OUTLET PRESSURE SWITCH
MODEL SWITCH
120N+1.2”WC
150N +0.98”WC
199N +1.06”WC
250N +4.0”WC
120LP +1.3”WC
150LP +1.3”WC
199LP +4.0”WC
250LP +2.0”WC
Norm ally Clos e d / Ope n on a Rise in Pres s ure Tolerance
BLOWER PROVER
PRESSURE SWITCH
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| MODEL | PRESSURE | |
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| All | +.075”WC |
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Norm ally Ope n / Clos e on a Ris e in Pre s s ure Tole rance
Top View of Pressure Switches
Note: Check the website www.statewaterheaters.com for Technical Bulletin
State Water Heaters – Technical Training Department 28 | Ashland City, Tennessee © 2009 |
Servicing should only be performed by a Qualified Service Agent |
