State Industries STC-077 dimensions Equivalent Feet of Pipe Intake or Exhaust, Direct Venting

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S U F S E R V I C E H A N D B O O K

I N S T A L L A T I O N

VENTING

Equivalent Feet of Pipe Intake or Exhaust

VENT LENGTH TABLE

NUMBER OF 90°

3” MINIMUM

3” MAXIMUM

4” MAXIMUM

ELBOWS

PIPE (FEET)

PIPE (FEET)

PIPE (FEET)

 

 

 

 

 

 

 

 

ONE (1)

7

45

115

 

 

 

 

TWO (2)

7

40

110

 

 

 

 

THREE (3)

7

35

105

 

 

 

 

FOUR (4)

7

30

100

 

 

 

 

FIVE (5)

7

--

95

 

 

 

 

SIX (6)

7

--

90

 

 

 

 

4-inch PVC may be used for a MAXIMUM intake of ONE HUNDRED TWENTY (120) EQUIVALENT FEET and a MAXIMUM exhaust of ONE HUNDRED TWENTY (120) EQUIVALENT FEET. The maximum number of 90° elbows with the 4-inch venting is six (6) on the intake and six (6) on the exhaust. A 90° elbow is equal to five (5) equivalent feet of pipe. One (1) 90° elbow is equal to two

(2)45° elbows. Any venting configuration using less than 50 equivalent feet should use 3-inch vent- ing. See Vent Length Table.

The 3-inch venting terminals (provided) must be used with the 4-inch venting by adding 4 x 3 reducing coupling at the venting terminals. A reducing coupling is also needed immediately after the condensate elbow (exhaust) and immediately before the 3-inch blower adapter (intake) if direct venting is installed. See Vent Length Table.

DIRECT VENTING

The air intake provided on the unit contains a mesh screen (see Figure below) to prevent large par- ticles from entering the unit.

3” (7.6CM) 45° PVC ELBOW WITH MESH SCREEN

WARNING WHEN THE UNIT IS TO BE SETUP AS A DIRECT VENT, THE MESH SCREEN MUST BE REMOVED. THE INLET VENT PIPE MAY THEN BE GLUED TO THE AIR INTAKE (see follow- ing Figure) PROVIDED ON THE UNIT.

Technical Training Department

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State Water Heaters

STC-077

Ashland City, Tennessee © 2004

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Contents Commercial Table of Contents SUF Service HandbookTools Required IntroductionGAS Supply Specifications InstallationClearances GAS RequirementsEquivalent Feet of Pipe Intake or Exhaust VentingDirect Venting Vent Length Table Number Minimum Maximum Elbows Pipe FeetVenting Materials Venting ConfigurationsConcentric Vent Termination Horizontal Installation Vertical InstallationSUF Model Venting ClearancesExterior Sidewall Clearances MAKE-UP AIR Direct Vent InstallationAIR Requirements Vertical Ducts Direct CommunicationBackdraft Horizontal DuctsInsufficient MAKE-UP AIR Flammable Items Contaminated AIRMultiple Unit Water Piping Condensation Sequence of Operation OperationDuring Call for Heat Normal Indications / Readings / SettingsControls Display Circuit Board Ignition Circuit Board Circut BoardsPRE-SERVICE Tips TroubleshootingVAC to Control VAC to Control BoardVAC to Transformer TransformerVAC from Transformer VAC to ECO ECO CheckCheck for 24 VAC Between PIN 1 on CN3 Plug and Ground VAC from ECOTemperature Probe Resistance Temperature ProbeUpper Lower Temperature Probe PlugPressure Switch Continuity Test Pressure Switch ContinuityVAC to Blower BlowerAmbient Room AIR Pressure Pressure Switch PerformanceTake AIR and GAS Pressure Readings Only Pressure Switch Continuity Test OperationalVAC to Ignitor VAC to IgnitorIgnitor Resistance Check Ignitor ResistanceVAC to GAS Valve GAS Valve TestSUF 240 only Manifold GAS Pressure Test GAS Pressure CheckSupply GAS Pressure Test Orifice Table Component InformationPressure Swtches Pressure Switches Part Number / Activation PRESSURE† Pressure SwitchesWiring Diagrams Service Aids T E S SUF MufflerHow often should the anodes be inspected? Questions and AnswersWhen should SUF’s be delimed? Code Indication Error CodesCode #S AboveIII. GAS Pressure Fill in Blank ALL Units on Service ChecklistState Water Heaters SUF Models 100 150, 100 199 and 100Description SUF Ultra Force SUF Models Replacement PartsUltra Force SUF Controls Parts List T E S Expert’s Choice

STC-077 specifications

The State Industries STC-077 is a notable addition to the realm of high-efficiency water heaters, exemplifying advanced engineering and innovative design. The STC-077 is particularly recognized for its exceptional performance and energy-saving capabilities, making it an ideal solution for both residential and commercial applications.

One of the standout features of the STC-077 is its impressive energy efficiency rating. Utilizing state-of-the-art technology, this water heater operates with a high energy factor (EF) that significantly reduces operating costs compared to traditional water heating systems. This is especially beneficial in today's climate of rising energy costs and increased environmental awareness.

The STC-077 employs a robust stainless-steel tank construction that not only provides durability but also mitigates the risk of corrosion, ensuring longevity and reliability. This innovative design approach helps extend the product's lifespan while maintaining consistent performance throughout its use. Coupled with superior insulation, users can expect minimal heat loss and enhanced energy efficiency, making it a sustainable choice for consumers.

The unit is equipped with advanced controls that provide precise temperature regulation. This feature improves user experience and safety, allowing for customization to meet individual needs. Additionally, the STC-077’s intuitive digital display makes monitoring and adjusting settings straightforward, providing convenience and ease of use.

In terms of capacity, the STC-077 offers versatility with options suitable for various household sizes and demands. Whether for a small apartment or a busy commercial establishment, its modular design allows for seamless integration into existing systems while providing adequate hot water supply.

Furthermore, the STC-077 incorporates innovative technologies aimed at reducing maintenance needs. With easy access for servicing and built-in diagnostics, users can monitor performance proactively, ensuring the unit operates at optimal efficiency.

Overall, the State Industries STC-077 shines as a forward-thinking water heater. Its combination of high energy efficiency, durable construction, advanced technology, and user-friendly features make it a comprehensive solution for those seeking reliable hot water with minimal environmental impact. Whether for homeowners looking to lower energy bills or businesses seeking dependable performance, the STC-077 stands out as a premier choice in water heating solutions.
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