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Typical piping applications (cont.):
Figure 8_Primary/Secondary Piping of a Single Boiler - 2 1/2" Valve
Figure 9_Primary/Secondary Piping of Multiple Boilers - 2 1/2" Valve for each boiler
DETAIL
DETAIL
Note: Valve must be installed
with proper port orientation. Failure to
observe port markings on the valve
body prior to installing the valve could
result in damage to the unit.
NOTES: 1) Unit(s) high limit must be set at max.
2) Inlet and outlet connections to the boiler are shown for reference only. Actual connections may vary
from those represented here. Consult the Installation and Service Manual for actual locations.
3) Unit(s) pump should operate only during firing periods.
NOT TO EXCEED 4 PIPE DIA.
OR A MAX. OF 12” APART
C = SYSTEM
RETURN
WATER
B = FROM
BOILER
OUTLET
A = BLENDED
WATER
NOTES: 1) Unit(s) high limit must be set at max.
2) Inlet and outlet connections to the boiler are shown for reference only. Actual connections may vary
from those represented here. Consult the Installation and Service Manual for actual locations.
3) Unit(s) pump should operate only during firing periods.
NOT TO EXCEED 4 PIPE DIA.
OR A MAX. OF 12” APART
4 of 8
INS7238 Rev C