Munchkin 399M manual Space heating zone circuit Zone Circulators Make-up water

Page 26

PIPING

Standard Munchkin boiler

Preferred piping (zoning with circulators) Domestic water heating mode

Drawing 2D

	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. 5-8

26

Image 26

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 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 Items to be Checked Before Lighting the Munchkin Part 6. START-UP ProceduresSTART-UP Procedures Lighting InstructionsAdjusting the Temperature on the Munchkin Display Operating InstructionsTo Turn OFF GAS to Appliance Test ModeStatus Menu 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