State Industries SUF100199, SUF100150 manual Controls Pressure Switches SUF 300,400

ULTRAFORCE COMMERCIAL GAS WATER HEATER

SUF 120 thru 400 SERVICE HANDBOOK

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

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

BLOWER PROVER

PRESSURE SWITCH

MODEL	PRESSURE
300	+1.0”WC
400	+2.5”WC
500	+4.5 'WC

Norm ally Open / Clos e on

aris e in Pre s s ure Tole rance +/-.05”WC

BLOCKED EXHAUST PRESSURE SWITCH

MODEL 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

Top View of Pressure Switches

SUF 300,400,

Note: Check the website www.statewaterheaters.com for Technical Bulletin S023-06 “Air Pressure Switches” under “Literature/Service Handbooks”

State Water Heaters – Technical Training Department 29 Ashland City, Tennessee © 2009

Servicing should only be performed by a Qualified Service Agent 198152-002