Lochinvar VAL2123 - Manual (Page 2)

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Typical piping applications:
Figure 4_Primary/Secondary Piping of a Single Boiler - 1 1/2" Valve
Figure 5_Primary /Secondary Piping of Multiple Boilers - 1 1/2" Valve for each boiler
DETAIL
DET
AIL
C = SYSTEM
RETURN
WATER
B = FROM
BOILER
OUTLET
A = BLENDED
WATER
*Best practice for Indoor/Outdoor reset.
**Best practice for set point operation.
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.
*REMOTE
SENSOR
REQUIRED
**REMOTE
SENSOR
REQUIRED
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.
MIN. 10 PIPE DIA.
MIN. 10 PIPE DIA.
NOT
TO
EXCEED 4 PIPE DIA.
OR
A MAX. OF 12”
AP
AR
T
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
REMOTE
SENSOR
REQUIRED
REMOTE
SENSOR
REQUIRED
REMOTE
SEQUENCER
MIN. 10 PIPE DIA.
INS7238 Rev C