State Industries SUF100199, SUF100150 manual Controls GAS Valve SUF

Page 24

ULTRAFORCE COMMERCIAL GAS WATER HEATER

SUF 120 thru 400 SERVICE HANDBOOK

CONTROLS – GAS VALVE SUF 120

The gas control valve on the SUF 120 has a built i n adj ustable pre ssure regulator. T he adjustment screw is accessed by removing the cap screw m arket regulator i n t he illustration.

Inlet gas pressure may be read at the inlet pressure tap only if the manual shut off valve (gas cock) is in the “ON” position. Leaving the knob in the “OFF” position will not allow the burner to fire and will generate a fault code on th e UIM ( Universal I nterface Module).

CONTROLS – GAS VALVE SUF 150

The gas control valve on the SUF 150 is has a built in pressure regulator. The regulator may be adjusted by removing the cap screw marked “regulator” in the illustration.

Inlet gas pressure may be read at the inlet pressure tap only if the manual switch is set the “ON” position.

State Water Heaters – Technical Training Department 23

Ashland City, Tennessee © 2009

Servicing should only be performed by a Qualified Service Agent

198152-002

Image 24

Contents Service Handbook Table of Contents Ultraforce Commercial GAS Water HeaterIntroduction QualificationsTools Required Digital MultimeterGAS Pressure Specifications General InformationAdjustment Procedure GAS Pressure SUF120 and 150 Models High Altitude Installations SUF 120High Altitude Installation GAS OrificeHigh Altitude Adjustment SUF 300,400 SUF 300,400Installation Tips SUF 300 Venting Tables SUF 120 Vent Length Table Equivalent Feet Meters 120 throughVenting Tables SUF 300,400 Vent Length Table Equivalent Feet Meters 300,400Venting ALL Models Single Pipe Power Vent Using Room AIR Venting ALL Models TWO Pipe Direct Vent Using Outside AIR Vent Termination Direct Vent ALL Models Direct Venting ALL Models Control Overview ALL Models Status Description IconAdjusting Tank Temperature Operating SET Point Differential DisplayChanging the Display Units Fault and Warning Conditions Advanced Diagnostic Information Access to the Current Fault or Warning Viewing Information About the Water Heater Control Sequence Typical ALL Models Control Sequence Flow Chart Controls Central Control Board CCB Remove these Screws to release CoverControls GAS Valve SUF SUF 120 thru 400 Service Handbook Controls GAS Valve SUF 199 Important Note High Altitude InstallationSupply gas pressure Controls GAS Valve , Orifice CHART- SUF300,400 Orifice Chart SUF 300,400Controls Pressure Switches ALL Models Blocked Outlet Proving SwitchTop View of Pressure Switches Controls Pressure Switches SUF 300,400 Blocked Inlet Pressure Switch Odel PressureUltraforce Commercial GAS Water Heater HOT Surface Igniter / Flame Sensor / Control Timing Control TimingFlame Sensor Blower Speed Control SUF 199 ModelBlower Motor Wires Black White RED Ground HOT NeutralAI1 LI1 LI2 LI3 LI4Variable Frequency Drive Blower Speed and Pressure Readings Voltage Frequency Speed Instructions VFD ModelSUF 400Wiring Diagram SUF 120 Wiring Diagram SUF Tennessee Waltz Parkway Ashland City, TN