Munchkin 399M manual Munchkin Controller, Control Wiring Layout

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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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Contents What to do if YOU Smell GAS Munchkin High Efficiency 399M Commercial BoilerUsing this Manual Using this ManualTable of Contents HOW IT Operates Munchkin Ratings and DimensionsPart 1. General Information General InformationDimensions PRE-INSTALLATION Requirements Electrical Connection Part 2. ElectricalGeneral Information / Electrical Pressure Relief ValveElectrical Electrical / GAS Connection Part 3. GAS ConnectionGAS Table GAS ConnectionGAS Connection GAS PipingMunchkin Burnertech GAS Valve Combustion SettingsVenting the Munchkin in 4 or 6 Plastic Pipe Part 4. VentingVenting Approved Venting MaterialsVenting Important Note Fittings or Piping Equivalent Feet Longer Vent Runs Using a Combination 4 to 6 PipeHeater Removal from a Common Vent System Diagrams for Sidewall VentingDiagram for Vertical Venting Hydronic Piping with Circulators or Zone Valves Part 5. PipingVenting / Piping Condensate RequirementsCirculator Sizing PipingFill and Purge Heating System Piping Illustrations Piping Symbol LegendZone valves Make-up water Zone valves Mixing valve Zone valves Make-up water Piping Space heating zone circuit Zone Circulators Make-up water PB1 PB2 PB1 PB2 Lighting Instructions Part 6. START-UP ProceduresSTART-UP Procedures Items to be Checked Before Lighting the MunchkinOperating Instructions Adjusting the Temperature on the Munchkin DisplayTest Mode Status MenuTo Turn OFF GAS to Appliance Sequence of Operation START-UP Procedures / ServicingMunchkin Temporary Fault Condition Part 7. ServicingServicing Munchkin Fault Requiring Manual ResetServicing Remedy Call Factory for further assistance Resistance Tables Maintenance Part 8. MaintenanceLeaks Munchkin Controller Control Wiring LayoutMaintenance Maintenance Page Page Heat Transfer Products, Inc LP-121 REV /20/04