Munchkin Gas-Fired Hot Water Circulating Heater installation manual Drawing 3D

GAS-FIRED HEATER Installation Manual

Munchkin Contender Heater with optional VISION 1 system (zoning with circulators)

Space heating mode (3 fully reset supply temperatures)

Drawing 3D

make-up

water

air handler

(higher temp.)

optional high limit safety

purge purge

vent	medium temperature
	manifold station

vent

low temperature manifold station

balancing valves

see note 6

3-way (manually-set) mixing valve

anti-scald mixing valve		Munchkin
		Contender
		Heater
	DHW	P1
	temp.
	sensor
	(Vision 1 system)
	OFF
		T/P
	P2	outdoor
		temperature
		sensor
		(Vision 1 system)
		purge
Super Stor Ultra		thermal trap
	(w/ drain plug)
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 diameters center to center spacing.

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

4.The minimum pipe size for connecting a Super Stor Ultra Indirect Water Heater is 1-inch.

5.The minimum pipe size for connecting the Munchkin Contender is 1.25-inch

6.Circulators are shown with isolation flanges and integral check valves. The alternative is standard flanges with full port ball valves and a separate flow check valve. Purge valves can be used with the circulator flanges as an alternative.

7.Optional Vision 1 system includes temperature sensors for DHW and outdoor air and must be purchased separately.

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

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

10.Winterization: When winterizing the Munchkin Contender, put a drain valve on both the supply and return between the union and the shut-off connection.

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