Zoning With Zone Valves; Zoning With Circulators; Multiple Boilers - Munchkin Gas-Fired Hot Water Boiler Manual

GAS-FIRED BOILER
PART 5: BOILER PIPING
CAUTION
It is highly recommended that you carefully
follow the glycol manufacturer's recommended
concentrations, expansion requirements and
maintenance recommendations (pH additive
breakdown, inhibitor reduction, etc.). You must
carefully figure the additional friction loss in the
system as well as the reduction in heat transfer
co-efficients.
J. ZONING WITH ZONE VALVES
1. Connect boiler to system as shown in 2A and
2B in Piping Details when zoning with zone
valves. The primary/secondary piping shown
ensures the boiler loop will have sufficient
flow. It also avoids applying the high head of
the boiler circulator to the zone valves.
2. Connect DHW (domestic hot water) piping to
indirect storage water heater as shown.
17
(CONTINUED)
K. ZONING WITH CIRCULATORS
1. Connect boiler to system when circulator
2. Install a separate circulator for each zone.
3. Connect DHW (domestic hot water) piping to
L. MULTIPLE BOILERS
1. Connect multiple boilers as shown in 1E and
2. All piping shown is reverse return to assure
3. Each connected boiler must have its own
4. Connect DHW (domestic hot water) piping to
zoning as shown in 1C and 1D in Piping
Details when zoning with circulators. The
boiler circulator cannot be used for a zone. It
must supply only the boiler loop.
indirect storage water heater as shown.
1F in Piping Details.
balanced flow through the connected boilers.
circulator pump to assure adequate flow.
indirect storage water heater as shown.
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