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

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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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Contents Boiler Manual Contents Contents CONT’D Part 1 Product and Safety Information DefinitionsBefore Installing When Servicing BoilerBoiler Operation Boiler WaterSupply water temperature sensor Return water temperature sensorTemperature and pressure gauge Stainless Steel Heat ExchangerPart 3 Prepare Boiler Location Spark ignitionVision 1 System Boiler Location should be LevelDimensions Performance Ratings Connection Sizes FAN Speeds80M 140M/199M Installations Must Comply with Before Locating the BoilerPrecautions Clearances for Service AccessResidential Garage Installation Exhaust Vent and Intake AIR VentWhen Removing a Boiler from AN Existing Common Vent System Corrosive contaminants and sourcesPart 5 Boiler Piping Remove Boiler from BOXRelief Valve Diaphragm or bladder expansion tank Part 5 Boiler Piping Circulator Sizing Chart Circulator SizingSystem Temperature Rise Chart Fill and Purge Heating SystemZoning with Zone Valves Zoning with CirculatorsMultiple Boilers Piping Symbol Legend Boiler Piping DetailsOFF Zone valves Make-up water Boiler Manual Space heating zone circuit Zone Circulators Make-up water PB1 PB2 PB1 PB2 Zoning with Circulators Using Vision Vision I System PipingSpace heating mode Boiler Piping Details with the Vision I SystemOFF DHW Space heating mode w/ submixing Water OFF Munchkin Vision 1 system zoning with circulators Space heating mode 3 fully reset supply temperatures Space heating mode 3 different supply temperatures OFF Thermal trap Drain plug Installing Exhaust Vent and Intake AIR Vent GeneralExhaust Vent and Intake AIR Vent Pipe Location Part 7 VENTING, Combustion AIR & Condensate Removal Reference National Fuel Gas Code Ansi Z223.1/NFPA 54 Exhaust Vent and Intake AIR Pipe Installation Exhaust Vent and Intake AIR Vent SizingLonger Vent Runs Heater Removal from a Common Vent System Vent Termination Kits Description Stock CodeCondensate Removal System Diagrams for Sidewall Venting Sidewall Venting with TEE Intake Coupling ExhaustSidwall Venting with KIT Diagrams for Vertical Venting Roof Vent with TEE Intake Coupling ExhaustPart 8 GAS Piping GAS ConnectionGAS Piping GAS TableOFF SET Adjustment Dungs GAS Valve for T50/T80/80M/140M/199MInstallation Must Comply with Field WiringLine Voltage Wiring Krom Schroder Valve for 399MPart 9 Field Wiring Part 9 Field Wiring Part 10 Field Wiring Vision Indirect Circulator P2 ProgramPart 11. START-UP Preparation Check for GAS Leaks Purge AIR from Water SystemCheck Thermostat Circuits Check Condensate Removal Final Checks Before Starting BoilerPart 12. START-UP Procedure Adjusting the SetpointOperating Instructions Status MenuTest Mode Vision 1 Program AccessProgramming the Vision I Option Boiler cannot be programmed while there is a call for heat Vision 1 Program NavigationDefault Function Function Value Description FunctionCentral Heating Curve Function Control Program Reference Chart Function Default Setting Programmed SettingMunchkin Error Code Boiler ErrorBoiler Fault Part 14 Troubleshooting 925 Control Board Fault Codes Description RemedyMaintenance Procedures Outdoor Sensor 7250P-319For GAS Leaks Sure Exhaust Vent is no Longer BlockedPart 15 Maintenance T50M/T80MT50M/T80M 80M/140M/199M Boiler Replacement Parts Boiler Boiler Start UP Report BoilerBoiler Inspection and Maintenance Schedule ManualBoiler Inspection and Maintenance Schedule Maintenance Notes Maintenance Notes Maintenance Notes Heat Transfer Products, Inc LP-185 REV /20/07

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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