Munchkin Gas-Fired Hot Water Boiler manual Off

GAS-FIRED BOILER Boiler Manual

Munchkin VISION 1 system (zoning with circulators) Domestic water heating mode

Drawing 4B

			OFF	OFF	OFF
					zone
					circulators
		high limit safety
make-up water
purge	closely spaced tees
	purge
anti-scald mixing valve
cold
water
		OFF
	DHW	P1
	temperature			outdoor
	sensor
				temperature
				sensor
	P2	T/P
		purge
Super Stor	thermal trap
	(w/ drain plug)		Munchkin boiler
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 and 2 inches for the 399M.

6.All pumps are shown with isolation flanges and integral flow check valves.

The alternative is standard flanges with full port ball valves and a separate flow check valve.

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.

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