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

GAS-FIRED HEATER Installation Manual

Munchkin Contender Heater with optional VISION 1 system

Drawing 3F

Multiple high temperature priority loads controlled with zone valves

high temperature loads low temperature loads

air handler
		make-up water	OFF	OFF	OFF
					zone
					circulators
air handler		optional high limit safety
		closely spaced tees
multi-zone	purge	purge
relay center

anti-scald	Munchkin
	Contender
mixing valve
	Heater
DHW
tank	OFF
aquastat

P1

P2

T/P

see note 6	outdoor
	temperature
	sensor
	(Vision 1 system)
	purge

Super Stor Ultra	thermal trap
	(w/ drain plug)
Indirect DHW Tank
	differential pressure bypass valve

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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