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GAS-FIRED HEATER Installation Manual

Munchkin Contender Heater with optional VISION 1 system

(zoning with circulators)

Space heating mode

Drawing 3A

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.

DHW

temperature

sensor

closely spaced tees

purge

make-up water

zone

circulators

anti-scald mixing valve

thermal trap

(w/ drain plug)

OFF

outdoor

temperature

sensor

T/P

Munchkin

Contender

Heater

Super Stor Ultra

Indirect DHW Tank

(Vision 1 system)

high limit safety

see note 6

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Munchkin Gas-Fired Hot Water Boiler Manuale di Installazione Pagina 28