Drawing 1a, Piping, Fig. 5-3 – HTP 399M User Manual
Page 21
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PIPING
Standard Munchkin boiler
Retrofit piping (zoning with valves)
Space heating mode
Munchkin boiler
P1
Super Stor
indirect DHW tank
T/P
Drawing 1A
make-up water
zone valves
purging
valves
NOTES:
1.
This drawing is meant to show system piping concept only.
Installer is responsible for all equipment & detailing required by local codes.
2.
Adjust flow bypass valve for the following minimum boiler flow rates in any operating mode:
Munchkin model 399M: 16 gpm
3.
The minimum pipe size for connecting a Super Stor water heater is 1 inch.
4.
The minimum pipe size for connecting a Munchkin boiler is 2.00 inches.
5.
All pumps are shown with isolation flanges. The alternative is standard flanges with full port ball valves.
6.
The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119˚F.
7.
Install a minimum of 12 diameters of straight pipe upstream of all circulators.
8.
A purging valve may be used in lieu of the ball valve / hose bib combination shown
.
V1
flow
bypass
valve
anti-scald
mixing valve
cold
water
OFF
Fig. 5-3