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GAS-FIRED BOILER Boiler Manual
D. BOILER PIPING DETAILS WITH THE VISION I SYSTEM
Munchkin VISION 1 system
(zoning with valves)
Space heating mode
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.
10. Adjust differential pressure bypass valve to eliminate any flow velocity noise when zone with highest pressure
drop operates by itself.
Drawing 3A
Munchkin boiler
DHW
temperature
sensor
purge
high limit safety
zone
valves
Super Stor
indirect DHW tank
anti-scald mixing valve
outdoor
temperature
sensor
thermal trap
(w/ drain plug)
differential
pressure
bypass
valve
T/P
OFF
P1
P2
purge
make-up water
cold
water
purge