Munchkin 399M manual PB1 PB2

Page 28

PIPING

Standard Munchkin boiler Preferred piping

(multiple boilers / zoning with circulators) Domestic water heating mode

Drawing 2F

space heating zone circuit

zone

circulators make-up water

closely spaced tees

purging valves

anti-scald mixing valve

P2

PB1

PB2

cold water

T/P

T/P

	Munchkin boiler	Munchkin boiler	Super Stor
			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.All closely spaced tees shall be within 4 pipe diameter center to center spacing.

3.A minimum of 6 pipe diameters of straight pipe shall be installed upstream and downstream of all closely spaced tees.

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

5.The minimum pipe size for connecting a Munchkin boiler shall be 1.25 inches.

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

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

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

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

Fig. 5-10

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Image 28

Contents Munchkin High Efficiency 399M Commercial Boiler What to do if YOU Smell GASUsing this Manual Using this ManualTable of Contents Munchkin Ratings and Dimensions Part 1. General InformationGeneral Information HOW IT OperatesDimensions PRE-INSTALLATION Requirements Part 2. Electrical General Information / ElectricalPressure Relief Valve Electrical ConnectionElectrical Part 3. GAS Connection Electrical / GAS ConnectionGAS Connection GAS ConnectionGAS Piping GAS TableCombustion Settings Munchkin Burnertech GAS ValvePart 4. Venting VentingApproved Venting Materials 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 Part 5. Piping Venting / PipingCondensate Requirements Hydronic Piping with Circulators or Zone ValvesPiping Circulator SizingFill 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 Part 6. START-UP Procedures START-UP ProceduresItems to be Checked Before Lighting the Munchkin Lighting InstructionsAdjusting the Temperature on the Munchkin Display Operating InstructionsStatus Menu Test ModeTo Turn OFF GAS to Appliance START-UP Procedures / Servicing Munchkin Temporary Fault ConditionPart 7. Servicing 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