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

AIR REQUIREMENTS

MINIMUM AIR FOR COMBUSTION 10 Cubic Feet of Air Per 1000 BTUH

Stoichiometric or theoretical complete combustion requires 10 cubic feet of air per 1000 BTUH of gas input. The National Fuel Gas Code also recommends an additional 2.5 cu.ft. of “excess air”. This 12.5 cu.ft. minimum supply air per 1000 BTUH input applies to natural and propane gas mod- els.

The National Fuel Code also specifies minimum make-up air opening sizes for various building installations (Ref: NFPA 54, ANSI Z223.1, sec 5.3).

MAKE-UP AIR

Direct Vent Installation

This model is approved for direct venting either horizontally or vertically or conventional venting horizontal or vertical. Direct venting avoids using room air for combustion and eliminates the need for additional air intake ducts.

State Water Heaters

9

Technical Training Department

Ashland City, Tennessee © 2004

STC-077

Page 10
Image 10
State Industries STC-077 dimensions AIR Requirements, Make-Up Air, Direct Vent Installation

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.