Munchkin 399M manual Zone valves Make-up water

Page 24

PIPING

Standard Munchkin boiler

Preferred piping (zoning with valves) Domestic water heating mode

Drawing 2B

	zone valves
make-up water	OFF	OFF	OFF	OFF
make-up water	P2
	P2
closely				differential
spaced				pressure
tees				bypass
				valve
purging	V1
valves
				anti-scald
			mixing valve
				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.Adjust differential pressure bypass valve to eliminate any flow velocity noise when zone with highest pressure drop operates by itself.

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.

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

Fig. 5-6

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Image 24

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 InstructionsTest Mode Status MenuTo 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