Munchkin Gas-Fired Hot Water Circulating Heater instruction

GAS-FIRED HEATER Installation Manual

PART 10: FIELD WIRING – VISION 1 OPTION

Outdoor Sensor Function The user can pro- gram the desired supply temperature based on the heat transmitter (Baseboard, Radiant Floor, Air Handler) that will be used in the installation. Once the outdoor sensor (Light Green Wires) is connected to the control board, the water tem- perature of the heater will adjust to run the heater more efficiently and provide greater com- fort to the living space.

Connection Specification – Wire 22 AWG maximum to 100 feet or 18 AWG up to 150 feet. Length of wire run cannot exceed 150 feet.

Outdoor Sensor is connected in the junction box on the Munchkin Contender. Route wires from the Munchkin Contender terminal strip to your outdoor sensor, which will allow the user to change the temperature going to the Central Heating loop automatically. Place the outdoor sensor preferably to the north or northwest or to the side which will be affected by changing weather conditions outside. NOTE: Do not locate the sensor in the direct sunlight.

CAUTION

The wire to outdoor sensor must not be laid closer than 6' to line voltage wiring (120/240 V) and must never be in the same conduit.

Indirect Sensor Function: The Maximum run time on priority function for the Super Stor Ultra Indirect Fired Water Heater is from 1-60 minutes. The water temperature can only be adjusted when using a sensor (not a mechanical control). Temperature adjustments are from 95 to 185 degrees, plus a differential 1-18 degrees (Note: It is recommend that you do not exceed 5 minutes on the DHW pump post purge cycle to avoid cooling down your DHW tank).

Indirect Sensor is connected to the main control on the Munchkin Contender. Route wires from the terminal strip to the sensor or the mechanical control Honeywell Part # L4080b-

1395 (Not included in Vision I Package) into the control well located in the front of the water heater. This will allow the installer to control the temperature of the indirect from the Munchkin Contender and give the water heater priority over the Central Heating Circuit. Once the Water Heater is satisfied, the heater will then switch back to the Central Heating Circuit only if there is a call for heat, otherwise the Munchkin Contender will then shut down.

Indirect Circulator (P2) Program

function: The indirect water heater circulator program function will automatically start when the water heater sensor reads a call for heat, the installer can also program the post purge function on the circulator. The Post purge circulator function ranges from 1-30 minutes.

Indirect Circulator (P2) is connected to the terminal strip on the Munchkin Contender. Run the wire to the Super Stor Ultra Indirect circulat- ing pump. The purple wire will be your neutral lead and the pink wire will be your hot. This will supply 120 volts to the water heater circulator directly.

Fault Code Alarm Output is connected to the main controller on the Munchkin Contender. Route wire from the Munchkin Contender con- troller to an external relay or an audible alarm. The red wire will be your hot lead supplying 120 volts. The neutral connection will be connected to the neutral on the incoming power to the Munchkin Contender.

CAUTION

Do not tie neutrals or hot wire leads to any o t h e r w i r e s , g o d i r e c t l y f r o m t h e Munchkin Contender controller to the circulator.

Connection Specification – Wire 18 AWG maximum. Length of wire run cannot exceed 100 feet.

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.