Munchkin 399M manual Zone valves Make-up water

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PIPING

Standard Munchkin boiler

Retrofit piping (zoning with valves) Space heating mode

Drawing 1A

	zone valves
make-up water	P1
	P1
		flow
purging		bypass
valves		valve
		V1
		OFF
		anti-scald
		mixing valve
		cold
		water
	T/P
	Munchkin boiler	Super Stor
	Munchkin boiler	indirect DHW tank
		indirect DHW tank
NOTES:

1.This drawing is meant to show system piping concept only.

Installer is responsible for all equipment & detailing required by local codes.

2.Adjust flow bypass valve for the following minimum boiler flow rates in any operating mode: Munchkin model 399M: 16 gpm

3.The minimum pipe size for connecting a Super Stor water heater is 1 inch.

4.The minimum pipe size for connecting a Munchkin boiler is 1.25 inches.

5.All pumps are shown with isolation flanges. The alternative is standard flanges with full port ball valves.

6.The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119˚F.

7.Install a minimum of 12 diameters of straight pipe upstream of all circulators.

8.A purging valve may be used .in lieu of the ball valve / hose bib combination shown

Fig. 5-3

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Image 21

Contents What to do if YOU Smell GAS Munchkin High Efficiency 399M Commercial BoilerUsing this Manual Using this ManualTable of Contents Part 1. General Information Munchkin Ratings and DimensionsGeneral Information HOW IT OperatesDimensions PRE-INSTALLATION Requirements General Information / Electrical Part 2. ElectricalPressure Relief Valve Electrical ConnectionElectrical Electrical / GAS Connection Part 3. GAS ConnectionGAS Connection GAS ConnectionGAS Piping GAS TableMunchkin Burnertech GAS Valve Combustion SettingsVenting Part 4. VentingApproved Venting Materials Venting the Munchkin in 4 or 6 Plastic PipeVenting 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 Venting / Piping Part 5. PipingCondensate Requirements Hydronic Piping with Circulators or Zone ValvesCirculator 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 START-UP Procedures Part 6. START-UP ProceduresItems to be Checked Before Lighting the Munchkin Lighting InstructionsOperating Instructions Adjusting the Temperature on the Munchkin DisplayTest Mode Status MenuTo Turn OFF GAS to Appliance Munchkin Temporary Fault Condition START-UP Procedures / ServicingPart 7. Servicing Sequence of OperationServicing 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