Munchkin 399M manual Zone valves

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PIPING

Standard Munchkin boiler

Retrofit piping (zoning with valves) Domestic water heating mode

Drawing 1B

zone valves
OFF	OFF	OFF	OFF
make-up water
P1
			flow
purging			bypass
valves			valve
V1
			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. 5-4

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Image 22

Contents Munchkin High Efficiency 399M Commercial Boiler What to do if YOU Smell GASUsing this Manual Using this ManualTable of Contents General Information Munchkin Ratings and DimensionsPart 1. General Information HOW IT OperatesDimensions PRE-INSTALLATION Requirements Pressure Relief Valve Part 2. ElectricalGeneral Information / Electrical Electrical ConnectionElectrical Part 3. GAS Connection Electrical / GAS ConnectionGAS Piping GAS ConnectionGAS Connection GAS TableCombustion Settings Munchkin Burnertech GAS ValveApproved Venting Materials Part 4. VentingVenting Venting the Munchkin in 4 or 6 Plastic PipeVenting Important Note Longer Vent Runs Using a Combination 4 to 6 Pipe Fittings or Piping Equivalent FeetDiagrams for Sidewall Venting Heater Removal from a Common Vent SystemDiagram for Vertical Venting Condensate Requirements Part 5. PipingVenting / Piping Hydronic Piping with Circulators or Zone ValvesPiping Circulator Sizing Fill and Purge Heating System Piping Symbol Legend Piping IllustrationsZone 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 Items to be Checked Before Lighting the Munchkin Part 6. START-UP ProceduresSTART-UP Procedures Lighting InstructionsAdjusting the Temperature on the Munchkin Display Operating InstructionsStatus Menu Test ModeTo Turn OFF GAS to Appliance Part 7. Servicing START-UP Procedures / ServicingMunchkin Temporary Fault Condition Sequence of OperationMunchkin Fault Requiring Manual Reset ServicingServicing Remedy Call Factory for further assistance Resistance Tables Part 8. Maintenance MaintenanceLeaks Control Wiring Layout Munchkin ControllerMaintenance Maintenance Page Page Heat Transfer Products, Inc LP-121 REV /20/04