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1" TEMPERATURE
AND PRESSURE
GAUGE
AUTOMATIC AIR
ELIMINATOR/VENT
SYSTEM
OUTLET
SYSTEM
SENSOR
LOCATION
SYSTEM
INLET
BUFFER
TANK
DRAIN
PUMP
COMMOM MANIFOLD
MUST BE SIZED TO
ACCOMMODATE COMBINED
FLOW RATE FOR
ALL BOILERS
Figure 4-8_Primary/secondary piping with buffer tank
*Please note that these illustrations are meant to show system piping concept only, the installer is responsible
for all equipment and detailing required by local codes.
NOTICE
Installation & Service Manual
4 Water connections
COMMON MANIFOLD SIZE (Min.)
Models: 497 - 747
Number of Units GPM
Diameter
(in.)
2 120 3 1/2
3 180 4
4 240 5
5 300 5
6 360 6
7 420 6
8 480 6
COMMON MANIFOLD SIZE (Min.)
Models: 987 - 2067
Number of Units GPM
Diameter
(in.)
2 180 4
3 270 5
4 360 6
5 450 6
6 540 6
7 630 8
8 720 8