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ULTRAFORCE COMMERCIAL GAS WATER HEATER
INTRODUCTION...............................................................2
QUALIFICATIONS............................................................2
TOOLS REQUIRED.........................................................3
GENERAL INFORMATION................................................4
GAS PRESSURE SPECIFICATIONS ................................4
PRESSURE .....................................................................5
ADJUSTMENT PROCEDURE: .........................................5
GAS PRESSURE .............................................................5
SUF120 AND 150 MODELS..............................................5
HIGH ALTITUDE INSTALLATIONS ...................................5
SUF 120 - 150 .................................................................5
PRESSURE .....................................................................6
ADJUSTMENT PROCEDURE:..........................................6
GAS PRESSURE .............................................................6
SUF 199 AND 250 MODELS ............................................6
HIGH ALTITUDE INSTALLATION......................................6
PRESSURE......................................................................7
ADJUSTMENT PROCEDURE:..........................................7
GAS PRESSURE..............................................................7
SUF 300,400,....................................................................7
HIGH ALTITUDE ADJUSTMENT ......................................7
SUF 300,400,....................................................................7
INSTALLATION TIPS - SUF 300, 400 ...............................8
VENTING TABLES SUF 120 - 250....................................9
VENTING TABLES SUF 300,400,.....................................9
USING ROOM AIR..........................................................10
USING OUTSIDE AIR.....................................................11
DIRECT VENTING - ALL MODELS.................................13
CONTROL OVERVIEW ..................................................14
CONTROL OVERVIEW - ALL MODELS..........................14
POINT - DIFFERENTIAL.................................................15
CHANGING THE DISPLAY UNITS..................................16
DIAGNOSTIC INFORMATION.........................................17
INFORMATION ABOUT THE HEATER............................19
CONTROL SEQUENCE (TYPICAL ALL MODELS).........20
CONTROL SEQUENCE FLOW CHART...........................21
CONTROLS - GAS VALVE SUF 120...............................23
CONTROLS - GAS VALVE SUF 150...............................23
CONTROLS - GAS VALVE SUF 199 and 250..................24
ADJUSTMENT PROCEDURE:........................................24
GAS PRESSURE ...........................................................24
SUF 199 AND 250 MODELS ..........................................24
CONTROLS - GAS VALVE SUF 199 and 250..................25
State Water Heaters - Technical Training Department 1
SUF 120 thru 400 SERVICE HANDBOOK
TABLE OF CONTENTS
Servicing should only be performed by a Qualified Service Agent
SUF300,400,...................................................................26
250.................................................................................28
SENSOR, SIGHT GLASS, POWERED ANODES.............30
TIMING...........................................................................31
BLOWER SPEED CONTROL SUF 199 AND 250.............32
VARIABLE FREQUENCY DRIVE - SUF 400...................33
PRESSURE READINGS..................................................34
WIRING DIAGRAM - SUF 120 - 300 ..............................35
WIRING DIAGRAM - SUF 400,.......................................36
Ashland City, Tennessee © 2009
198152-002
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