Munchkin MUNCHKIN HIGH EFFICIENCY HEATER with the "925" Controller manual Drawing 2E, Piping

PIPING

Standard Munchkin boiler Preferred piping

(multiple boilers / zoning with circulators) Space heating mode

Drawing 2E

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.

NOTE: FOR VISION PIPING APPLICATIONS, REFER TO THE VISION INSTALLATION PIPING DIAGRAMS.

Fig. 5-9

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