Munchkin 399M manual Piping

Page 25

PIPING

Standard Munchkin boiler

Preferred piping (zoning with circulators) Space heating mode

Drawing 2C

	space heating zone circuit
		zone
		circulators
	make-up water
	closely
	spaced
	tees
	purging
	valves	anti-scald
		anti-scald
		mixing valve
		P2
		cold
		water
	P1
	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.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. 5-7

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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 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 DisplayStatus Menu Test ModeTo 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