GAS-FIRED HEATER Installation Manual

PART 1: PRODUCT AND SAFETY INFORMATION (CONT’D

can cause internal corrosion in system components. Leaks in heater or piping must be repaired at once to prevent make-up water.

WINTERIZING THE MUNCHKIN CONTENDER

To winterize the Munchkin Contender, drain the entire system, then apply air pressure to the drain valve and allow air and water to escape from the purge valve (see piping instructions). Once you have evacuated all of the water that is possible, you will then need to pump in the non toxic propylene glycol food grade NSF® listed antifreeze (SAFE-T-THERM www.houghton.com or PARATHERM www.paratherm.com). Try to calculate the entire volume of the piping system to insure the entire system will be adequately protected. Consult the glycol manufacturer for mixture % recommendations to adequately pro- tect the system for the local climate of the instal- lation.

With a pump, fill the system with the non-toxic propylene glycol food grade NSF® listed antifreeze, allowing the air and remaining water to escape from the purge valve. Once the stream coming out of the purge valve matches the color of the non toxic propylene glycol food grade NSF® listed antifreeze, the system should be adequately filled. It is rcommended at this point to start any circulation pump and allow the

system to circulate for at least 30 minutes to completely blend any trapped water that might be in the system with the NSF® listed solution. At this point it is suggested that you check the concentration of NSF® antifreeze to be sure that protection is adequate. Consult the glycol man- ufacturer for specific instructions on the con- centration % as well as the freeze and burst pro- tection methods.

FREEZE PROTECTION FLUIDS

CAUTION

NEVER use automotive or standard glycol antifreeze, even ethylene glycol made for hydronic systems. Use only inhibited propylene glycol solutions, which are specifically formulated for hydronic systems. Ethylene glycol is toxic and can attack gaskets and seals used in hydronic systems.

CAUTION

Consider piping and installation when determining heater location. Any claims for damage or shortage in shipment must be filed immediately against the transportation company by the consignee.

PART 2: HOW THE MUNCKIN CONTENDER OPERATES

Munchkin Contender Condensing Technology is an intelligent system that delivers highly efficient hydronic heating, while maximizing efficiency by measuring the Data Parameters of your heating system.

1.Stainless Steel Heat Exchanger

The highly efficient durable Munchkin Contender Stainless Steel Heat Exchanger is designed to take the colder return water from the system and extract the last bit of energy before it is exhausted. The heat exchanger design is separated by an internal baffle which diverts the exhaust gas through the primary heat exchanger into the secondary heat exchanger where the colder return water extracts the last residual heat.

2.Modulating Combustion System

Modulation during the central heating operation is based on the supply temperature. The set point used for the control depends upon the programmed central heating curve. The slope of the heating curve can be changed by the installer of the Munchkin Contender in the sense that both turning points of the curve can be moved. The control monitors the system to regulate the output of the burner during operation to match the system demand. This increase in efficiency allows for substantial fuel savings.

3.Gas Valve

The gas valve senses suction from the blower, allowing gas to flow only if the gas valve is

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Munchkin Gas-Fired Hot Water Circulating Heater Winterizing the Munchkin Contender, Freeze Protection Fluids, Gas Valve
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Gas-Fired Hot Water Circulating Heater specifications

The Munchkin Gas-Fired Hot Water Circulating Heater is a cutting-edge heating solution designed to provide efficient and reliable hot water for residential and commercial applications. Renowned for its compact design and innovative technology, the Munchkin heater combines performance with energy efficiency, making it an ideal choice for those seeking comfort and cost savings.

One of the main features of the Munchkin heater is its modulating burner. This technology intelligently adjusts the heating output based on the demand for hot water, ensuring that energy is not wasted. This leads to lower energy bills and a reduction in environmental impact, as the system only uses the necessary resources to maintain desired water temperatures.

Another notable characteristic is its high-efficiency rating. The Munchkin heater operates with an impressive annual fuel utilization efficiency (AFUE) of up to 95%. This means that the majority of the fuel consumed is converted into usable heat. By maximizing energy utilization, homeowners can enjoy a significant reduction in utility costs while minimizing emissions.

The compact size of the Munchkin Gas-Fired Hot Water Circulating Heater is another significant advantage. It is designed to fit into tight spaces, making it suitable for homes where space is at a premium. This compact design does not compromise performance; instead, it enhances installation flexibility, allowing for placement in basements, closets, or utility rooms.

Munchkin heaters are equipped with advanced control systems that offer enhanced convenience. The digital display and programmable settings allow users to set their preferred temperatures and schedules. This feature not only enhances user comfort but also optimizes energy usage, as water is heated only when necessary.

Safety is also a top priority with Munchkin products. The heater includes built-in safety features such as flame monitoring systems, automatic shut-off capabilities, and pressure relief valves, providing peace of mind for users.

In summary, the Munchkin Gas-Fired Hot Water Circulating Heater is a high-efficiency, compact, and innovative solution for hot water needs. With its modulating burner, high-efficiency rating, advanced control systems, and safety features, it stands out as a reliable choice for those looking to invest in heating technology that prioritizes energy conservation and performance. This heater is truly a forward-thinking solution for modern hot water requirements.
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