19
3-90-07205R26_10/14
Plumbing Installation
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
SYSTEM RETURN 1-1/4"
FROM BOILER
TO BOILER
SYSTEM SUPPLY 1-1/4"
BRANCH ZONES WILL BE
REDUCED TO REQUIRED SIZE
(TYPICALLY 3/4") AT THIS POINT
NOTE: IF CIRCULATOR DOES NOT
HAVE CHECK VALVE THEN A FLOW
CONTOL VALVE WILL ALSO BE
NEEDED AND INSTALLED IN THIS
LOCATION
SHUT-OFF VALVE
TO ADDITIONAL ZONES
SHUT-OFF VALVE
CIRCULATORS WITH
INTEGRAL CHECK VALVE
(SEE NOTE)
UNION
EXAMPLE OF A TYPICAL MULTI-ZONE HEATING SYSTEM WITH
INDIVIDUAL ZONE CIRCULATORS
ZONE 2
ZONE 1
ZONE 3
AIR VENT
ZONE 1
ZONE 2
ZONE 3
* PRESSURE
RELIEF VALVE
* TEMPERATURE/PRESSURE
GAUGE
AIR VENT
TYPICAL BOILER HOT WATER PIPING SHOWING AIR REMOVAL SYSTEM, PROVISIONS FOR THE EXPANSION OF
WATER AND THE AUTOMATIC COLD WATER SUPPLY. ALSO SHOWN IS THE AUTOMATIC MIXING VALVE. THIS
COULD ALSO BE DONE BY (2) CLOSELY SPACED TEE'S. THE PROPER PIPING FOR THE INTENDED USE WILL BE
DETERMINED BY THE INSTALLING CERTIFIED PLUMBER OR HVAC CONTRACTOR.
UNION
SHUT-OFF
VALVE
* AQUASTAT
WELL
UNION
SYSTEM SUPPLY 1-1/4"
* ITEMS SUPPLIED
** OPTIONAL
PRESSURE REDUCING VALVE (PRV)
OR COMBINATION PRV AND
RELIEF VALVE
* BOILER DRAIN, 1/2" NPT MALE X
3/4" HOSE MALE (NOT SHOWN)
SENSING BULB
EXPANSION TANK
(DIAPHRAGM TYPE)
SHUT-OFF VALVE
PIPE TO WITHIN 6" OF THE
FLOOR OR A FLOOR DRAIN
SYSTEM RETURN 1-1/4"
** THERMOMETER
CHECK VALVE (OR BACKFLOW
PREVENTER IF REQUIRED)
** THERMOMETER
NOTE: ALWAYS REFER TO THE INDIVIDUAL COMPONENTS RECOMMENDED
INSTALLATION INSTRUCTIONS FOR THE PROPER MOUNTING POSITION
AND LOCATION WITHIN THE PIPING SYSTEM.
AIR SCOOP
AUTOMATIC
MIXING VALVE
COLD WATER
SUPPLY 1/2"
SYSTEM SUPPLY 1-1/4"
SHUT-OFF VALVE
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”.
*BOILER DRAIN, 3/4” NPT MALE X
3/4” HOSE MALE (NOT SHOWN)
Summary of Contents for PB 105
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