Munchkin MUNCHKIN HIGH EFFICIENCY HEATER with the "925" Controller manual Using this Manual

Page 2

USING THIS MANUAL

USING THIS MANUAL

SPECIAL ATTENTION BOXES

Throughout this manual you will see these special attention boxes similar to this one, which are intended to supplement the instructions and make special notice of potential hazards. These categories mean, in the judgement of Heat Transfer Products, Inc.:

NOTICE

Heat Transfer Products manufactures both ASME and Non-ASME boilers. It is the responsibility of the installer that the correct model has been selected for jurisdiction requirements.

DANGER

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.

WARNING

WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION

CAUTION Indicates a potentially hazardous situtation which, if not avoided, may result in minor or moderate injury.

CAUTION

CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.

WARNINGS

•THIS UNIT IS FOR CATEGORY IV VENTING - 2 PIPE ONLY. THIS IS A SEALED COMBUSTION APPLIANCE.

•THIS HEATER INSTALLATION MUST CONFORM TO THE LATEST EDITION OF THE “NATIONAL FUEL GAS CODE” ANSI Z223.1 NFPA 54 AND OR CAN/CGA B149 INSTALLATION CODES. STATE AND LOCAL CODES MIGHT ALSO APPLY TO INSTALLATION.

•WHERE REQUIRED BY THE AUTHORITY HAVING JURISDICTION, THE INSTALLATION MUST CONFORM TO THE STANDARDS FOR CONTROLS AND SAFETY DEVICES FOR AUTOMATICALLY FIRED HEATERS, ANSI/ASME HEATER AND PRESSURE VESSEL CODE, Section IV, ALONG WITH CSD1.

•THE HEATER, GAS PIPING, WATER PIPING, VENTING AND ELECTRICAL MUST BE INSTALLED BY TRAINED & QUALIFIED PERSONNEL FAMILIAR WITH INSTALLATION PRACTICES, LOCAL CODE, LICENSING REQUIREMENTS.

•IF THE INFORMATION IN THESE INSTRUCTIONS ARE NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT; CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH.

•DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE;

•THE USE OF A LOW WATER CUT-OFF DEVICE MAY BE REQUIRED BY STATE OR LOCAL CODES IF THE MUNCHKIN IS INSTALLED ABOVE RADIATION LEVELS.

2

Page 1 Page 3
Image 2
Page 1 Page 3
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 GAS Piping Part 3. GAS ConnectionGAS Connection 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 Condensate Cleaning Instructions Part 8. MaintenanceMaintenance Procedures 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.
Top Page Image Contents