Install Instructions

34
4 Water connections
Installation & Service Manual
Figure 4-6_Primary/secondary piping of multiple boilers
SECONDARY
BOILER
PUMP
FROM
SYSTEM
12" OR 4X
PIPE DIAMETERS
AIR
SEPARATOR
MAKE-UP
WATER
PRESSURE
RELIEF
VALVE
EXPANSION
TANK
LOW WATER
CUT-OFF
(OPTIONAL)
TO SYSTEM
SYSTEM
PUMP
WATER
METER
Y-STRAINER
(TYPICAL)
DIR #2000570587_000
DIRT SEPARATOR
(RECOMMENDED)
COMMON MANIFOLD SIZE (Min.)
Models: 497 - 747
Number of Units GPM
Diameter
(in.)
2 120 3
3 180 3 1/2
4 240 4
5 300 5
6 360 5
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
*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