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

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

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MAINTENANCE

E. MUNCHKIN CONTROLLER

CONTROL WIRING LAYOUT

Fig. 8-1

*There is a spare 6.3 amp “slow blow” fuse included on the control cover. HTP p/n 7250-378 or you may purchase it from Radio Shack p/n: 270-1068

Caution: Do not replace with any amperage other than 6.3A

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Munchkin MUNCHKIN HIGH EFFICIENCY HEATER with the "925" Controller manual Maintenance, E. Munchkin Controller

Contents

WHAT TO DO IF YOU SMELL GAS MUNCHKIN HIGH EFFICIENCY HEATER with the “925” ControllerInstalling, Operating & Maintaining SPECIAL ATTENTION BOXES USING THIS MANUALWARNINGS USING THIS MANUALTABLE OF CONTENTS TABLE OF CONTENTSGENERAL INFORMATION PART 1. GENERAL INFORMATIONGENERAL INFORMATION RECOMMENDED SERVICE CLEARANCES80M/140M/199M T50M/T80MT50M/T80M DIMENSIONSGENERAL INFORMATION GENERAL INFORMATION 140M/199MCODES & REGULATIONS ACCESSIBILITY CLEARANCESGENERAL INFORMATION GENERALNote Service clearance of the Munchkin See Section 1, Figures 1-1 and PART 2. ELECTRICALGENERAL INFORMATION / ELECTRICAL ELECTRICAL DANGERDANGER DANGERELECTRICAL Figure 2-1 Connection Wiring Directly to Central Heating CirculatorGAS CONNECTION PART 3. GAS CONNECTIONDUNGS GAS VALVE GAS CONNECTIONDANGER PART 4. VENTINGFoam Core Pipe is not to be used in connecting the exhaust pipe DANGERVENTING DANGERB. VENTING THE MUNCHKIN EXIT TERMINALS OF MECHANICAL DRAFT AND DIRECT-VENT VENTING SYSTEM VENTINGREFERENCE THE NATIONAL FUEL GAS CODE 2002 EDITION Do not exceed the 85 foot maximum requirement intake plus exhaust piping added together including fitting allowance VENTINGVENTING DANGERThe Munchkin is not intended to be common vented with any other existing applianceVENTING DIAGRAMS FOR SIDEWALL VENTINGVENTING VENTING DIAGRAMS FOR VERTICAL VENTINGPIPING PART 5. PIPINGB. CIRCULATOR SIZING PIPINGC. FILL AND PURGE HEATING SYSTEM PIPINGPIPING Piping Symbol LegendD. PIPING ILLUSTRATIONS PIPING Standard Munchkin boilerRetrofit piping zoning with valves Space heating mode Drawing 1APIPING Retrofit piping zoning with valves Domestic water heating modeDrawing 1B Standard Munchkin boilerPIPING Preferred piping zoning with valves Space heating modeDrawing 2A Standard Munchkin boilerPIPING Preferred piping zoning with valves Domestic water heating modeDrawing 2B Standard Munchkin boilerPIPING Preferred piping zoning with circulators Space heating modeDrawing 2C Standard Munchkin boilerPIPING Preferred piping zoning with circulators Domestic water heating modeDrawing 2D Standard Munchkin boilerPIPING Standard Munchkin boiler Preferred pipingmultiple boilers / zoning with circulators Space heating mode Drawing 2EStandard Munchkin boiler Preferred piping Drawing 2FPIPING START-UP PROCEDURES PART 6. START-UP PROCEDURESDANGER result, causing property damage, personal injury or loss of lifeFOR YOUR OWN SAFETY READ BEFORE OPERATING START-UP PROCEDURESFunction Value START-UP PROCEDURESE. ADJUSTING THE TEMPERATURE ON THE MUNCHKIN DISPLAY F. STATUS MENUDANGER START-UP PROCEDURES / SERVICINGWater temperature over 125 degrees F. can cause severe burns instantly, or death from scalds. Children, disabled, and elderlyB. BOILER ERROR PART 7. TROUBLESHOOTINGTROUBLESHOOTING A. MUNCHKIN ERROR CODEDescription TROUBLESHOOTINGTable 7-1 925 Control Board Error Codes CodeRESISTANCE TABLES TROUBLESHOOTINGMAINTENANCE PART 8. MAINTENANCEDANGER MAINTENANCED. COMBUSTION CHAMBER COIL CLEANING INSTRUCTIONS DANGERCaution Do not replace with any amperage other than 6.3A MAINTENANCECONTROL WIRING LAYOUT E. MUNCHKIN CONTROLLERMAINTENANCE MAINTENANCE Page Page 2004 Heat Transfer Products, Inc Munchkin R1LP-61 REV. 1/17/05