GAS-FIRED BOILER

Boiler Manual

E. KROM SCHRODER VALVE FOR 399M

FIRST VALVE

OFFSET ADJUSTMENT

Fig. 8-3

GAS VALVE SHUT OFF

INLET SOLENOID

THROTTLE SCREW

OUTLET SOLENOID WARNING: IF FOR ANY REASON THE THROTTLE NEEDS TO BE ADJUSTED, IT IS VERY IMPORTANT THAT A COMBUSTION ANALYZER BE USED TO ENSURE SAFE AND PROPER OPERATION.

THE ADJUSTMENT COULD AFFECT THE CO/CO2

LEVELS. MAKE SURE THE LEVELS CORRESPOND TO THE COMBUSTION SETTING CHART FIG 12-1 IN PART 12

MAIN GAS VALVE

MEASURE OFFSET HERE

PART 9: FIELD WIRING

WARNING

ELECTRICAL SHOCK HAZARD — For your safety, turn off electrical power supply at service entrance panel before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death.

NOTICE

Wiring must be N.E.C. Class 1.

If original wiring as supplied with boiler must be replaced, use only TEW 105 °C wire or equivalent.

Boiler must be electrically grounded as required by National Electrical Code ANSI/NFPA 70 — latest edition.

A.INSTALLATION MUST COMPLY WITH:

1.National Electrical Code and any other national, state, provincial or local codes or regulations.

2.In Canada, CSA C22.1 Canadian Electrical Code Part 1, and any local codes.

B.FIELD WIRING

The Munchkin Boiler box has a 24 volt terminal

strip on the boiler cabinet and 120 volt terminal strip enclosed in the electrical box. Each terminal connection is clearly marked to assure correct in- stallation.

C.LINE VOLTAGE WIRING

1.Connect 120 VAC power wiring to the line voltage terminal strip located inside the electric junction box, as shown in figure 9.5.

2.Wire the Boiler Primary Circulator (P1) to the terminal strip. See wiring diagram in this section.

D.THERMOSTAT

1.Connect room thermostat or end switch

2.Install thermostat on inside wall away from influences of drafts, hot or cold water pipes, lighting fixtures, television, sunrays or fireplaces.

3.Thermostat anticipator (if applicable):

a.If connected directly to boiler, set for 0.1 amps.

b.If connected to relays or other devices, set to match total electrical power requirements of connected devices. See specifications of the device and thermostat instructions for details.

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Munchkin Gas-Fired Hot Water Boiler Krom Schroder Valve for 399M, Installation Must Comply with, Field Wiring, Thermostat
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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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