GAS-FIRED BOILER

Boiler Manual

PART 12. START-UP PROCEDURE (CONTINUED)

A. OPERATING INSTRUCTIONS

Remove boiler cover. If you smell gas, STOP. Follow listed safety instructions. If you do not smell gas, follow the next steps.

1.Turn on all electric power to appliance.

2.Adjust the temperature setpoint of the Munchkin Boiler if desired. The factory default setting is 180°. If changes are ncessary follow “Adjusting The Munchkin Setpoint” in this section.

3.Set the thermostat to the desired setting.

4.If the appliance fails to start, refer to the Troubleshooting section in the back of this manual.

DANGER

Water temperature over 125 degrees F. can cause severe burns instantly, or death from

scalds. Children, disabled, and

elderly are at highest risk of being scalded. See instruction manual before setting temperature at water

heater. Feel water before bathing or showering! Temperature limiting valves are available.

B.ADJUSTING THE SETPOINT

1.Before you can change the temperature from the factory setting of 180 degrees. You must make sure that none of the thermostats are call- ing for heat. The controller will not memorize a program setting while in a heating cycle. To adjust the temperature to the Munchkin simply press in the {S3/Program} key for three seconds until you see a flashing (C) then an alternate value of (180). This number is the factory set point of the unit, which is 180 degrees. To change the temperature, simply push either the {S1/-}or {S2/+} on the display. The {S1/-}button will decrease the temperature while the {S2/+} will increase the temperature of the Munchkin. The temperature of the boiler can be set as low as 50 Degrees and as high 180 Degrees. These ranges are your maximum and minimum ranges of the boiler. In addition to changing the tem- perature you are also allowed to change three more settings in this model (1. Munchkin differ- ential – 2. Indirect setting (with Vision System)

–3. Celsius to Fahrenheit measurement. Simply press in the {S3/Program} key to get to next value, the Munchkin Boiler differential setting will appear in the display ch and alternating value of 30. This allows the installer to adjust the activa- tion of the burner based on the differential tem- perature setting of the Munchkin. The burner will not start until the outlet water temperature reaches a temperature that is equal to the tem- perature setting for the Munchkin Boiler, minus the differential EX: The Boiler is set to heat at 180° F degrees and the differential is set at 30° F. The burner will not start until the outlet temper- ature of the system reaches 149° F degrees (180°

–30° F = 150° F). To adjust, press either {S1/-}(Decrease Value) or {S2/+} (Increase Value) Ranges 5° F to 30° F. Press the {S3/Program} key again and you will see the Indirect Setting de and an alternative value of 119 (with Vision Systems) To adjust, press either {S1/-}Decrease Value) or {S2/+} (Increase Value).

The final adjustment in this mode is the Fahrenheit to Celcius measurement. Press the {S3/Program} key again and you will see t and alternating value of F. To change value press the {S1/-}or {S2/+} to choose the correct measurement.

C. STATUS MENU

Installers are also able to check the current status of the Munchkin Boiler parameters by pressing {S4/RESET} key for 3 seconds. Once activated, the display will show d1 alternating value of the actu- al outlet temperature. Actual values are displayed for each function. To view the next value simply press the {S/4} key to go to the next displayed value. Listed below are the values which can be displayed. These values cannot be changed. To exit this menu, simply press {S3/Program} key to resume normal operation.

Function Value

d1 — Actual Temperature from outlet sensor

d2 — Actual Temperature from inlet sensor

d3 — If using a standard mechanical control, the control will display 1 for closed 0 for open

If the sensor is connected to the SuperStor Indirect Fired Water Heater it will measure the actual temperature. (Vision option.)

d4 — Not used

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Munchkin Gas-Fired Hot Water Boiler manual Part 12. START-UP Procedure, Operating Instructions, Adjusting the Setpoint
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Gas-Fired Hot Water Boiler specifications

The Munchkin Gas-Fired Hot Water Boiler is a highly efficient heating system that has garnered attention in residential and commercial applications for its innovative design and advanced technology. This boiler is compact yet powerful, providing exceptional heating performance while maximizing energy efficiency.

One of the standout features of the Munchkin boiler is its modulating condensing technology. This system allows the boiler to adjust its output based on demand, which optimizes energy use and reduces unnecessary fuel consumption. By modulating the flame, the Munchkin boiler can maintain a steady heating output even during variable load conditions, ensuring that users enjoy consistent hot water without waste.

The Munchkin boiler offers an impressive AFUE (Annual Fuel Utilization Efficiency) rating, typically exceeding 95%. This high efficiency translates to significant savings on energy bills and a reduced carbon footprint. By capturing and reusing flue gases that would otherwise be lost, the condensing feature enhances the overall efficiency, making it a sustainable choice for modern heating needs.

In terms of installation, the Munchkin boiler is designed for versatility. Its compact size allows for easy placement in tight spaces, whether in residential basements or utility closets. The unit is compatible with a variety of piping systems and can be integrated with multiple heating sources including radiators, baseboards, and even in-floor heating setups.

Another notable characteristic of the Munchkin boiler is its advanced control system. The boiler is equipped with a user-friendly digital display that allows for easy programming, monitoring, and adjustments. This enhanced control capability ensures that users can fine-tune their heating schedules according to their lifestyle, optimizing comfort while maintaining peak efficiency.

Reliability is a hallmark of the Munchkin brand. Built with high-quality materials, these boilers are engineered to withstand the rigors of daily operation, offering durable performance for years. Furthermore, Munchkin provides robust customer support and service options to assist homeowners and professionals alike.

In summary, the Munchkin Gas-Fired Hot Water Boiler stands out due to its modulating condensing technology, high efficiency, compact design, and advanced control system. These characteristics make it an excellent choice for those seeking a reliable, efficient, and versatile heating solution. Whether for residential or commercial use, the Munchkin boiler provides consistent, effective heating that meets the demands of today's energy-conscious consumers.
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