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Munchkin MUNCHKIN HIGH EFFICIENCY HEATER with the "925" Controller manual Troubleshooting

Models: MUNCHKIN HIGH EFFICIENCY HEATER with the "925" Controller

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TROUBLESHOOTING

RESISTANCE TABLES

Boiler & Indirect Temperature (˚F)	Resistance (ohms)
32	32550
41	25340
50	19870
59	15700
68	12490
77	10000
86	8059
95	6535
104	5330
113	4372
122	3605
131	2989
140	2490
149	2084
158	1753
167	1481
176	1256
185	1070
194	915
203	786
212	667

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Munchkin MUNCHKIN HIGH EFFICIENCY HEATER with the "925" Controller manual Troubleshooting, Resistance Tables

Contents

WHAT TO DO IF YOU SMELL GAS MUNCHKIN HIGH EFFICIENCY HEATER with the “925” ControllerInstalling, Operating & Maintaining USING THIS MANUAL WARNINGSUSING THIS MANUAL SPECIAL ATTENTION BOXESTABLE OF CONTENTS TABLE OF CONTENTSPART 1. GENERAL INFORMATION GENERAL INFORMATIONRECOMMENDED SERVICE CLEARANCES 80M/140M/199MT50M/T80M GENERAL INFORMATIONT50M/T80M DIMENSIONSGENERAL INFORMATION 140M/199M GENERAL INFORMATIONACCESSIBILITY CLEARANCES GENERAL INFORMATIONGENERAL CODES & REGULATIONSNote Service clearance of the Munchkin See Section 1, Figures 1-1 and PART 2. ELECTRICALGENERAL INFORMATION / ELECTRICAL DANGER DANGERDANGER ELECTRICALFigure 2-1 Connection Wiring Directly to Central Heating Circulator ELECTRICALPART 3. GAS CONNECTION GAS CONNECTIONGAS CONNECTION DUNGS GAS VALVEPART 4. VENTING Foam Core Pipe is not to be used in connecting the exhaust pipeDANGER DANGERVENTING DANGERB. VENTING THE MUNCHKIN EXIT TERMINALS OF MECHANICAL DRAFT AND DIRECT-VENT VENTING SYSTEM VENTINGREFERENCE THE NATIONAL FUEL GAS CODE 2002 EDITION VENTING Do not exceed the 85 foot maximum requirement intake plus exhaust piping added together including fitting allowanceDANGER The Munchkin is not intended to be common vented with any otherexisting appliance VENTINGDIAGRAMS FOR SIDEWALL VENTING VENTINGVENTING DIAGRAMS FOR VERTICAL VENTING VENTINGPART 5. PIPING PIPINGPIPING B. CIRCULATOR SIZINGPIPING C. FILL AND PURGE HEATING SYSTEMPIPING Piping Symbol LegendD. PIPING ILLUSTRATIONS Standard Munchkin boiler Retrofit piping zoning with valves Space heating modeDrawing 1A PIPINGRetrofit piping zoning with valves Domestic water heating mode Drawing 1BStandard Munchkin boiler PIPINGPreferred piping zoning with valves Space heating mode Drawing 2AStandard Munchkin boiler PIPINGPreferred piping zoning with valves Domestic water heating mode Drawing 2BStandard Munchkin boiler PIPINGPreferred piping zoning with circulators Space heating mode Drawing 2CStandard Munchkin boiler PIPINGPreferred piping zoning with circulators Domestic water heating mode Drawing 2DStandard Munchkin boiler PIPINGStandard Munchkin boiler Preferred piping multiple boilers / zoning with circulators Space heating modeDrawing 2E PIPINGStandard Munchkin boiler Preferred piping Drawing 2FPIPING PART 6. START-UP PROCEDURES START-UP PROCEDURESresult, causing property damage, personal injury or loss of life FOR YOUR OWN SAFETY READ BEFORE OPERATINGSTART-UP PROCEDURES DANGERSTART-UP PROCEDURES E. ADJUSTING THE TEMPERATURE ON THE MUNCHKIN DISPLAYF. STATUS MENU Function ValueSTART-UP PROCEDURES / SERVICING Water temperature over 125 degrees F. can cause severe burnsinstantly, or death from scalds. Children, disabled, and elderly DANGERPART 7. TROUBLESHOOTING TROUBLESHOOTINGA. MUNCHKIN ERROR CODE B. BOILER ERRORTROUBLESHOOTING Table 7-1 925 Control Board Error CodesCode DescriptionTROUBLESHOOTING RESISTANCE TABLESPART 8. MAINTENANCE MAINTENANCEMAINTENANCE D. COMBUSTION CHAMBER COIL CLEANING INSTRUCTIONSDANGER DANGERMAINTENANCE CONTROL WIRING LAYOUTE. MUNCHKIN CONTROLLER Caution Do not replace with any amperage other than 6.3AMAINTENANCE MAINTENANCE Page Page 2004 Heat Transfer Products, Inc Munchkin R1LP-61 REV. 1/17/05