Controls - Pressure Switches - Suf 300,400 - State Water Heaters SUF 130 300 Service Handbook

ULTRAFORCE COMMERCIAL GAS WATER HEATER
CONTROLS – PRESSURE SWITCHES – SUF 300,400,
BLOCKED INLET
PRESSURE SWITCH
M ODEL PRESSURE
300 -.085"WC
400 -1.25"WC
500 -1.35"WC
Norm ally Clos ed/
Ope n on a Ris e in
Pres s ure
Tolerance +/-.05"WC
Note: Check the website
Pressure Switches" under "Literature/Service Handbooks"
State Water Heaters – Technical Training Department 29
SUF 120 thru 400 SERVICE HANDBOOK
LOW GAS PRESSURE
SWITCH
M ODEL PRESSURE
Natural +4.6"WC
LP +9.0"WC
Norm ally Ope n/
Clos e on a Ris e in
Pre s s ure
Tole rance +/-.05"WC
Top View of Pressure Switches
SUF 300,400,
www.statewaterheaters.com
Servicing should only be performed by a Qualified Service Agent
BLOWER PROVER
PRESSURE SWITCH
M ODEL PRESSURE
300 +1.0"WC
400 +2.5"WC
500 +4.5 'WC
Norm ally Open / Clos e on
a ris e in Pre s s ure
Tole rance +/-.05"WC
for Technical Bulletin S023-06 "Air
Ashland City, Tennessee © 2009
BLOCKED EXHAUST
PRESSURE SWITCH
M ODEL PRESSURE
300 +1.15"WC
400 +1.39"WC
500 +1.77"WC
Norm ally Clos e d /
Ope n on a Rise in
Pres s ure
Tolerance +/-.05"WC
198152-002