Munchkin Gas-Fired Hot Water Boiler Installation Manual download pdf (Page 16)

GAS-FIRED HEATER Installation Manual

MUNCHKIN CONTENDER PIPING

(CONTINUED)

J. ZONING WITH ZONE VALVES

1. Connect heater to system as shown in 1A

and 1B in Piping Details when zoning with

zone valves. The primary/secondary piping

shown ensures the heater loop will have

sufficient flow. It also avoids applying the

high head of the heater circulator to the zone

valves.

2. Connect DHW (domestic hot water) piping to

indirect storage water heater as shown.

K. ZONING WITH CIRCULATORS

1. Connect heater to system when circulator

zoning as shown in 1C and 1D in Piping

Details when zoning with circulators. The

heater circulator cannot be used for a zone. It

must supply only the heater loop.

2. Install a separate circulator for each zone.

3. Connect DHW (domestic hot water) piping to

indirect storage water heater as shown.

L. MULTIPLE HEATERS

1. Connect multiple heaters as shown in 1E and

1F in Piping Details.

2. All piping shown is reverse return to assure

balanced flow through the connected boilers.

3. Each connected heater must have its own

circulator pump to assure adequate flow.

4. Connect DHW (domestic hot water) piping to

indirect storage water heater as shown.

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.

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Munchkin Gas-Fired Hot Water Boiler Installation Manual Page 16