State Industries SUF100150, SUF100199 CONTROLS PRESSURE SWITCHES SUF 300,400,, Note: Check the website www.statewaterheaters.com , for Technical Bulletin S023-06 Air Pressure Switches under Literature/Service Handbooks, Top View of Pressure Switches SUF 300,400,

ULTRAFORCE COMMERCIAL GAS WATER HEATER
SUF 120 thru 400 SERVICE HANDBOOK
State Water Heaters – Technical Traini ng Department 29 Ashland City, Tennessee © 2009
Servicing should onl y be performed by a Qualified Service Agent 198152-002
CONTROLS – PRESSURE SWITCHES – SUF 300,400,
Note: Check the website www.statewaterheaters.com
for Technical Bulletin S023-06 “Air
Pressure Switches” under “Literature/Service Handbooks”
Top View of Pressure Switches
SUF 300,400,
BLOCKED INL ET
PRESSURE SWITCH
MODEL PRESSURE
300 -.085”WC
400 -1.25”WC
500 -1.35”WC
Norm ally Clos ed/
Open on a Rise in
Pressure
Tole r ance +/-.05”WC
LOW GAS PRESSURE
SWITCH
MODEL PRESSURE
Natural +4.6”WC
LP +9.0”WC
Norm ally Open /
Close on a Rise in
Pressure
Tolerance +/-.05”WC BLOCKED EXHA UST
PRESSURE SWITCH
MODEL PRESSURE
300 +1.1 5”WC
400 +1.3 9”WC
500 +1.7 7”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
300 +1.0”WC
400 +2.5”WC
500 +4.5 'WC
Normally Open / Close on
a rise in Pressur e
Tolerance +/-.05”WC