State Industries SUF100150, SUF100199 manual Control Overview ALL Models, Status Description Icon

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ULTRAFORCE COMMERCIAL GAS WATER HEATER

SUF 120 thru 400 SERVICE HANDBOOK

CONTROL OVERVIEW – ALL MODELS

Interaction with the water heater controller is done through an LCD display called the Universal Interface Module (UIM).This screen is also referred to as the “desktop” or “desktop menu”. Up and down buttons and three operation buttons allow navigation through the control menus and to make adjustments to the water heater. Operation of the three lower buttons is defined immediately above them on the screen.

While the water heater is operating, the user interface will display the desktop screen (if there are no active faults or warnings).

An example of this screen is shown below.

The first temperature on this screen is the temperature of the water inside the tank.

The second temperature on this screen is the

Operating Set Point.

The Operating Set Point is the temperature at which the water heater will maintain the water inside the tank.

The third line on the screen is a text description of the Operational State of the water heater. The operating state of the water heater is also indicated graphically by status icons.

^

OPERATION

UP AND

DOWN

BUTTONS

BUTTONS

 

The table of status icons describes graphically operational details of the water heater. Below is a legend of all the status icons:

Status

Description

Icon

 

The temperature of the water in the tank has fallen and the water heater will now initialize a new heating cycle.

The temperature of the water in the tank has reached the Operating Set Point.

The cont rol i s un able t o i nitiate any f urther heating cycles. This is usually caused by a fault condition detected by the control, but can also occur when an external system (like an energy management sys tem) has as ked t he w ater heater to discontinue any further heat cycles.

The blower is being energized.

The blower pressure switch has been made.

The igniter has been energized.

The igniter has been energized and sufficient current for ignition has been detected.

The control has requested that the gas valve be turned on.

The control has sensed flame in the burner.

The control has detected a fault condition. A fault condition will cause the water heater to discontinue operation.

The control has detected a warning condition. These conditions w ill not cause t he water heater to discontinue further heating cycles, but does merit attention.

State Water Heaters – Technical Training Department 14

Ashland City, Tennessee © 2009

Servicing should only be performed by a Qualified Service Agent

198152-002

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Contents Service Handbook Ultraforce Commercial GAS Water Heater Table of ContentsQualifications IntroductionDigital Multimeter Tools RequiredGeneral Information GAS Pressure SpecificationsHigh Altitude Installations SUF 120 Adjustment Procedure GAS Pressure SUF120 and 150 ModelsGAS Orifice High Altitude InstallationSUF 300,400 High Altitude Adjustment SUF 300,400Installation Tips SUF 300 Vent Length Table Equivalent Feet Meters 300,400 Venting Tables SUF 120Vent Length Table Equivalent Feet Meters 120 through Venting Tables SUF 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 Status Description Icon Control Overview ALL ModelsDisplay Adjusting Tank Temperature Operating SET Point DifferentialChanging 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 Remove these Screws to release Cover Controls Central Control Board CCBControls GAS Valve SUF Important Note High Altitude Installation SUF 120 thru 400 Service Handbook Controls GAS Valve SUF 199Supply gas pressure Orifice Chart SUF 300,400 Controls GAS Valve , Orifice CHART- SUF300,400Blocked Outlet Proving Switch Controls Pressure Switches ALL ModelsTop View of Pressure Switches Blocked Inlet Pressure Switch Odel Pressure Controls Pressure Switches SUF 300,400Ultraforce Commercial GAS Water Heater HOT Surface Igniter / Flame Sensor / Control Timing Control TimingFlame Sensor Model Blower Speed Control SUF 199LI1 LI2 LI3 LI4 Blower Motor Wires Black White REDGround HOT Neutral AI1400 Variable Frequency Drive Blower Speed and Pressure ReadingsVoltage Frequency Speed Instructions VFD Model SUFWiring Diagram SUF 120 Wiring Diagram SUF Tennessee Waltz Parkway Ashland City, TN