State Industries SUF100150, SUF100199 CONTROLS PRESSURE SWITCHES SUF 120 throug h 250, Top View of Pressure Switches, Note: Check the website www.statewaterheaters.com , for Technical Bulletin S023-06 Air Pressure Switches under Literature/Service Handbooks

ULTRAFORCE COMMERCIAL GAS WATER HEATER
SUF 120 thru 400 SERVICE HANDBOOK
State Water Heaters – Technical Traini ng Department 28 Ashland City, Tennessee © 2009
Servicing should onl y be performed by a Qualified Service Agent 198152-002
CONTROLS – PRESSURE SWITCHES – SUF 120 throug h 250
Note: Check the website www.statewaterheaters.com
for Technical Bulletin S023-06 “Air
Pressure Switches” under “Literature/Service Handbooks”
Top View of Pressure Switches
BLOCKED INL ET
PRESSURE SWITCH
MODEL PRESSURE
All 0.85”WC
Normally Closed /
Open on a Rise in
Pressure
Tole r ance +/-.05”WC
LOW GAS PRESSURE
SWITCH
MODEL PRESSURE
Natural 4.0”WC
LP 8.0”WC
Normally Open / Close
on a Rise in Pressure
Tolerance +/-.05”WC
BLOCKED OUT LET
PRESSURE SWITCH
MODEL SWIT CH
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 a lly C lo se d /
Open on a Rise in
Pressure
Tole r ance +/-.05”WC
BLOWER PROVER
PRESSURE SWITCH
MODEL PRESSURE
All +.075”WC
Norma lly Open / Clos e
on a Rise in Pressure
Tolerance +/-.05”WC