Munchkin MUNCHKIN HIGH EFFICIENCY HEATER with the "925" Controller PRE-INSTALLATION Requirement

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GENERAL INFORMATION

C. PRE-INSTALLATION REQUIREMENT

GENERAL

1.Munchkin Boilers are supplied complete- ly assembled as packaged boilers. The package should be inspected for damage upon receipt and any damage to the unit should be reported to the shipping com- pany and wholesaler. This boiler should be stored in a clean, dry area.

2.Carefully read these instructions and be sure to understand the function of all connections prior to beginning installa- tion. Contact your Munchkin Sales Representative or the Heat Transfer Products, Inc. Customer Service Department for help in answering ques- tions.

3.This boiler must be installed by a quali- fied contractor. The boiler warranty may be voided if the boiler is not installed cor- rectly.

CODES & REGULATIONS

Installation and repairs are to be performed in strict accordance with the requirements of state and local regulating agencies and codes dealing with boiler and gas appliance installation.

WARNING

Liquefied Petroleum (LP) Gas or Propane is heavier than air and, in the event of a leak, may collect in low areas such as basements or floor drains. The gas may then ignite resulting in a fire or explosion.

ACCESSIBILITY CLEARANCES

1.The Munchkin Boiler is certified for clos- et installations with zero clearance to

combustible construction. In addition, it is design certified for use on combustible floors.

2.Refer to Figure 1.1 and Figure 1.2 for the recommended clearance to allow for rea- sonable access to the boiler. Local codes or special conditions may require greater clearances.

CAUTION

Do not install this boiler on carpeting.

COMBUSTION AND VENTILATION AIR

1.The Munchkin Boiler is designed only for operation with combustion air piped from outside (sealed combustion). PVC pipe must be supplied between the air inlet connection at the rear of the boiler through an outside wall.

2.No additional combustion or ventilation air is required for this appliance.

3.Refer to Section 4 of this manual, Venting, for specific instructions for pip- ing combustion air.

PLANNING THE LAYOUT

1.Prepare sketches and notes showing the layout of the boiler installation to mini- mize the possibility of interferences with new or existing equipment, piping, vent- ing and wiring.

2.The following sections of this manual should be reviewed for consideration of limitations with respect to:

a.Electrical Wiring: Part 2

b.Gas Connection: Part 3

c.Venting: Part 4

f.Piping: Part 5

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Contents Munchkin High Efficiency Heater With the 925 ControllerUsing this Manual Special Attention BoxesTable of Contents HOW IT Operates Munchkin Ratings and DimensionsPart 1. General Information Recommended Service Clearances Dimensions 80M 140M/199M PRE-INSTALLATION Requirement GeneralElectrical Connection Part 2. ElectricalPressure Relief Valve Electrical Connection Wiring Directly to Central Heating Circulator Part 3. GAS Connection GAS ConnectionGAS Piping GAS TableDungs GAS Valve Part 4. Venting Approved Venting MaterialsVenting the Munchkin Direct vent terminal clearance Minimum clearance, C Longer Vent Runs Vented ApplianceHeater Removal from a Common Vent System Condensate RemovalDiagrams for Sidewall Venting Venting Diagrams for Vertical Venting Part 5. Piping Hydronic Piping with Circulators or Zone ValvesCirculator Sizing Munchkin T50M Munchkin T80M/80M Munchkin 140M Munchkin 199MFill and Purge Heating System Piping Symbol Legend Piping IllustrationsOFF Zone valves Piping Zone valves Make-up water Piping Space heating zone circuit Zone Circulators Make-up water PB1 PB2 PB1 PB2 Items to be Checked Before Lighting the Munchkin Part 6. START-UP ProceduresSequence of Operation Lighting Instructions Operating InstructionsAdjusting the Temperature on the Munchkin Display Status MenuTest Mode To Turn OFF GAS to AppliancePart 7. Troubleshooting Munchkin Error Code925 Control Board Error Codes Resistance Tables Part 8. Maintenance Maintenance ProceduresCondensate Cleaning Instructions Before Each Heating SeasonMaintenance Control Wiring Layout Munchkin ControllerMaintenance Maintenance Page Page Munchkin R1

MUNCHKIN HIGH EFFICIENCY HEATER with the "925" Controller specifications

The Munchkin High Efficiency Heater, equipped with the advanced "925" Controller, represents a significant advancement in heating technology for both residential and commercial applications. Known for its reliability and exceptional performance, this heater is designed to provide efficient heating while minimizing energy costs and environmental impact.

The Munchkin High Efficiency Heater operates on a condensing technology that extracts heat from exhaust gases. This process allows for higher efficiency rates, often exceeding 95%. By recovering heat that would otherwise be lost, the heater maximizes energy utilization, making it an eco-friendly choice for homeowners and businesses alike.

One of the standout features of the Munchkin 925 Controller is its user-friendly interface, which allows for effortless operation and monitoring of the heating system. The controller comes with advanced diagnostic capabilities that provide real-time feedback on system performance. Users can easily adjust settings, program schedules, and monitor energy consumption, ensuring optimal comfort and efficiency.

Furthermore, the Munchkin High Efficiency Heater is equipped with a variety of features that enhance its performance and user experience. The unit is designed with a durable heat exchanger made from stainless steel, which not only improves heat transfer but also ensures longevity and resistance to corrosion.

The heater operates quietly, making it suitable for installation in residential settings, including bedrooms and living spaces. Additionally, its compact design allows for flexible installation options, even in constrained spaces. The Munchkin unit is also compatible with multiple venting options, providing further versatility in installation configuration.

Safety features are a priority in the design of the Munchkin Heater. It includes built-in freeze protection, ensuring that the system operates effectively even in low temperatures. The unit also has an array of safety sensors that monitor for conditions such as flue blockage and overheating, triggering automatic shut-off mechanisms to prevent potential hazards.

In conclusion, the Munchkin High Efficiency Heater with the "925" Controller is a cutting-edge solution for efficient heating. With its superior performance, advanced controller system, durable construction, and comprehensive safety features, it remains a top choice for those looking to improve their heating efficiency while reducing energy consumption. Whether it's for residential or commercial use, the Munchkin heater promises reliability and comfort in any environment.