Munchkin Gas-Fired Hot Water Circulating Heater installation manual Drawing 2A

GAS-FIRED HEATER Installation Manual

D. HEATER PIPING DETAILS WITH THE VISION I SYSTEM

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

Space heating mode

Drawing 2A

make-up water

purge

optional high limit safety

see note 6

purge

zone valves

differential pressure bypass

valve

Munchkin

Contender

Heater

anti-scald mixing valve

DHW temperature sensor

(Vision 1 system)

P1

Super Stor Ultra

Indirect DHW Tank

OFF

P2	T/P
	outdoor

temperature

sensor

(Vision 1 system) purge

thermal trap

(w/ drain plug)

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. The alternative is standard flanges with full port ball valves. 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.

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

26