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3-90-07205R26_10/14
Plumbing Installation
EXAMPLE OF A COMBINATION HIGH/LOW MULTI-ZONE HEATING
SYSTEM WITH INDIVIDUAL ZONE CIRCULATORS
NOTE: IF CIRCULATOR DOES NOT HAVE CHECK
VALVE THEN A FLOW CONTOL VALVE WILL ALSO
BE NEEDED AND INSTALLED IN THIS LOCATION
SYSTEM SUPPLY 1-1/4"
TO BOILER
BRANCH ZONES WILL BE
REDUCED TO REQUIRED SIZE
(TYPICALLY 3/4") AT THIS POINT
FROM BOILER
CIRCULATORS WITH INTEGRAL
CHECK VALVE (SEE NOTE)
THERMOSTSTIC
MIXING VALVE
SYSTEM RETURN 1-1/4"
MIX
COLD
HOT
SHUT-OFF VALVE
SHUT-OFF VALVE
UNION
ZONE 1
ZONE 3
ZONE 2
(LOW TEMPERATURE) RADIANT FLOOR HEAT
(LOW TEMPERATURE) RADIANT FLOOR HEAT
AIR VENT (TYPICALLY INSTALLED IN THE HIGHEST
ACCESSABLE LOCATION IN THE PIPING)
(HIGH TEMPERATURE) BASEBOARD HEAT
AIR VENT
ZONE 3
ZONE 2
ZONE 1
NOTE: ALWAYS REFER TO THE INDIVIDUAL COMPONENTS RECOMMENDED
INSTALLATION INSTRUCTIONS FOR THE PROPER MOUNTING POSITION AND
LOCATION WITHIN THE PIPING SYSTEM.
NOTE: ALWAYS REFER TO THE INDIVIDUAL COMPONENTS RECOMMENDED
INSTALLATION INSTRUCTIONS FOR THE PROPER MOUNTING POSITION AND
LOCATION WITHIN THE PIPING SYSTEM.
AIR VENT (TYPICALLY INSTALLED IN THE HIGHEST
ACCESSABLE LOCATION IN THE PIPING)
FROM ADDITIONAL ZONES
EXAMPLE OF A TYPICAL MULTI-ZONE HEATING SYSTEM WITH A SINGLE
CIRCULATOR AND INDIVIDUAL ZONE VALVES
SHUT-OFF VALVE
SYSTEM SUPPLY 1-1/4"
SYSTEM RETURN 1-1/4"
TO BOILER
BRANCH ZONES WILL BE
REDUCED TO REQUIRED
SIZE (TYPICALLY 3/4") AT
THIS POINT
FROM BOILER
CIRCULATOR
ZONE 2
ZONE 1
TO ADDITIONAL ZONES
UNION
ZONE VALVE
BALANCING VALVE
UNION
ZONE 3
AIR VENT
ZONE 1
ZONE 2
ZONE 3
NOTe:
Cold return water temperature (Sustained temperatures below 140° F) will lead to condensation in the firebox. This moisture can
lead to creosote formation. To help minimize moisture and creosote, it is strongly recommended that some form of temperature balance
is incorporated into the return water system.
NOTICe: When installing with the atmospheric conversion:
All of the pressurized system components shown are not necessary. Air
vents or bleeders will need to be removed from the plumbing system to prevent air from entering the lines. Control dipswitch #6 will need
to be turned “ON”.
Summary of Contents for PB 105
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