Munchkin Gas-Fired Hot Water Boiler Exporter, Manufacturer, and Suppliers
Page 15

GAS-FIRED BOILER

Boiler Manual

PART 5: BOILER PIPING (CONTINUED)

diagrams, the space heating system is isolated from the boiler loop by the primary/secondary connection.

2.Size the piping and components in the space heating system using recognized design methods.

G.HYDRONIC PIPING WITH CIRCULATORS, ZONE VALVES AND MULTIPLE BOILERS

The Munchkin Boiler is designed to function in a closed loop 15 PSI System. A factory installed water pressure switch will ensure that you have adequate pressure in the system. The Munchkin Boiler will not operate without a minimum of 10 PSI water pressure. This assures you that if the system does have leak, the Munchkin Boiler will lock out (PRO on the display) before it damages the Stainless Steel Heat Exchanger. We have also included a Temperature and Pressure gauge which allows the user to monitor the system pressure and outlet temperature from the Munchkin Boiler. It is important to note that the Munchkin Boiler has a minimal amount of pressure drop and must be calculated when sizing the circulators. Each Munchkin Boiler installation must have an Air Elimination device that will remove air from the system. Install the Munchkin Boiler so the gas ignition system components are protected from water (dripping, spraying, etc.) allowing clearance for basic service of circulator replacement, valves and other. Observe minimum 1” clearance around all un-insulated hot water pipes when openings around pipes are not protected by non- combustible materials. On a Munchkin Boiler installed above radiation level, some states and local codes require a low water cut off device at the time of installation (See Part C this section). If the Munchkin Boiler supplies hot water to heating coils in air handler units, flow control valves or other devices must be installed to prevent gravity circulation of heater water in the coils during the cooling cycle. Chilled Water Medium must be piped in parallel with the heater. Freeze Protection for new or existing systems must use glycol that is specifically formulated for this purpose. It will include inhibitors that will prevent the glycol from attacking the metallic system components. Make

certain that the system fluid is checked for the correct glycol concentration and inhibitor level. The system should be tested at least once a year and as recommend by the producer of the glycol solution. Allowance should be made for the expansion of the glycol solution in the system piping. Example 50% by volume solution expands 4.8% in volume for the temperature increase from 32 F to 180 F, while water expands 3% with the same temperature rise.

Basic steps are listed below, with Illustration, which will guide you through the installation of the Munchkin.

CAUTION

The Munchkin Boiler should not be operated as a potable Hot Water Heater. It should not be used as a direct Hot Water Heating Device.

1.Connect the system return marked “Heater In”.

2.Connect the system supply marked “Heater Out”.

3.Install Purge and Balance Valve or shut off valve and drain on system return to purge air out of each zone.

4.Install a Back Flow preventor on the Cold Feed Make-Up Water line.

5.Install a Pressure Reducing Valve on the Cold Feed Make-Up Water line, (15 PSI nominal on the system return). Check Temperature and Pressure Gauge which should read minimum pressure of 12 PSI.

6.Install a circulator as shown in piping details (this section). Make sure the circulator is properly sized for the system and friction loss.

7.Install an Expansion Tank on the system supply. Consult the tank manufacturer’s instruction for specific information relating to expansion tank installation. Size the expansion tank for the required system volume and capacity.

8.Install an Air Elimination Device on the system supply.

9.Install a drain valve at the lowest point of the system. Note: The Munchkin Boiler can not be drained completely of water without purging the unit with an air pressure 15 PSI.

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Contents Boiler Manual Contents Contents CONT’D Definitions Part 1 Product and Safety InformationBoiler Water Before InstallingWhen Servicing Boiler Boiler OperationStainless Steel Heat Exchanger Supply water temperature sensorReturn water temperature sensor Temperature and pressure gaugeBoiler Location should be Level Part 3 Prepare Boiler LocationSpark ignition Vision 1 SystemPerformance Ratings Connection Sizes FAN Speeds Dimensions80M 140M/199M Before Locating the Boiler Installations Must Comply withExhaust Vent and Intake AIR Vent PrecautionsClearances for Service Access Residential Garage InstallationCorrosive contaminants and sources When Removing a Boiler from AN Existing Common Vent SystemPart 5 Boiler Piping Remove Boiler from BOXRelief Valve Diaphragm or bladder expansion tank Part 5 Boiler Piping Circulator Sizing Circulator Sizing ChartFill and Purge Heating System System Temperature Rise ChartZoning with Zone Valves Zoning with CirculatorsMultiple Boilers Boiler Piping Details Piping Symbol LegendOFF Zone valves Make-up water Boiler Manual Space heating zone circuit Zone Circulators Make-up water PB1 PB2 PB1 PB2 Vision I System Piping Zoning with Circulators Using VisionBoiler Piping Details with the Vision I System Space heating modeOFF 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 Vent Termination Kits Description Stock Code Heater Removal from a Common Vent SystemCondensate Removal System Sidewall Venting with TEE Intake Coupling Exhaust Diagrams for Sidewall VentingSidwall Venting with KIT Roof Vent with TEE Intake Coupling Exhaust Diagrams for Vertical VentingGAS Table Part 8 GAS PipingGAS Connection GAS PipingDungs GAS Valve for T50/T80/80M/140M/199M OFF SET AdjustmentKrom Schroder Valve for 399M Installation Must Comply withField Wiring Line Voltage WiringPart 9 Field Wiring Part 9 Field Wiring Indirect Circulator P2 Program Part 10 Field Wiring VisionPart 11. START-UP Preparation Check for GAS Leaks Purge AIR from Water SystemCheck Thermostat Circuits Final Checks Before Starting Boiler Check Condensate RemovalStatus Menu Part 12. START-UP ProcedureAdjusting the Setpoint Operating InstructionsTest Mode Vision 1 Program AccessProgramming the Vision I Option Vision 1 Program Navigation Boiler cannot be programmed while there is a call for heatDefault Function Function Value Description FunctionCentral Heating Curve Function Function Default Setting Programmed Setting Control Program Reference ChartMunchkin Error Code Boiler ErrorBoiler Fault 925 Control Board Fault Codes Description Remedy Part 14 TroubleshootingOutdoor Sensor 7250P-319 Maintenance ProceduresSure Exhaust Vent is no Longer Blocked For GAS LeaksT50M/T80M Part 15 MaintenanceT50M/T80M 80M/140M/199M Boiler Replacement Parts Boiler Boiler Boiler Start UP ReportManual Boiler Inspection and Maintenance ScheduleBoiler 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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