Lochinvar VAL2123 - Manual (Page 3)

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Typical piping applications (cont.):
Figure 6_Primary /Secondary Piping of a Single Boiler - 2" Valve
Figure 7_Primary/Secondary Piping of Multiple Boilers - 2" Valve for each boiler
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.
*Best practice for Indoor/Outdoor reset.
**Best practice for set point operation.
DETAIL
DET
AIL
NOT
TO
EXCEED 4 PIPE DIA.
OR
A MAX. OF 12”
AP
AR
T
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”
AP
AR
T
INS7238 Rev C