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15
INS-1500 & INS-2000 • 5403646 • REV F • 04/19
A
A
B
B
Fig. 15
15.
Pipe the provided 10' of 3/8” drain tubing on the nitrogen cabinet to the floor drain in the sprinkler room. Do not pipe the
drain tubing upward. See Fig 15.
Drain Tube
CAUTION
Restrain all drain tubing.
16. Each riser requires a minimum of ONE Nitrogen Purge Valve to be installed prior to implementing the Nitrogen Purging
Procedure. For installation instructions, refer to Model NGP-SPV Bulletin (#5401520) or Model INS-PV Manual
(#5401532) supplied with each purge valve. See Fig. 7 for NGP-SPV installation diagram. See Fig. 8 for INS-PV installation
diagram.
Installing the purge valve upside down will not allow the system to purge. Also, ensure that there is NO water in
the pipe to the purge valve.
11
1
/
4
"
7"
1/2" NPT TEE CONNECTION AND CLOSE NIPPLE
(SUPPLIED BY SPRINKLER CONTRACTOR)
PIPE FROM SPRINKLER SYSTEM
INSPECTOR'S TEST VALVE
PURGE ORIFICE (N
2
SAMPLING PORT)
NGP-SPV
PIPE PLUG (INSTALL AFTER
PURGE COMPLETE)
REMOVE PLUG WHEN SAMPLING
N
2
LEVELS AND PURGING
PURGE BALL VALVE
SHOWN IN NON - PURGE POSITION
UNION - POSITION VENT / ORIFICE
APPROPRIATELY
DWG. #0400-13
7
1
/
4
"
Fig. 16
7 1/4"
20 1/2"
7 1/8"
INSPECTORS TEST VALVE
PIPE FROM SPRINKLER SYSTEM
1/2" NPT TEE CONNECTION AND CLOSE NIPPLE
(SUPPLIED BY SPRINKLER CONTRACTOR)
PURGE BALL VALVE, SHOWN
IN CLOSED (NON-PURGE) POSITION
VENT
UNION - POSITION VENT/ORIFICE/INS-PV
APPROPRIATELY
INS-PV
INTELLIPURGE
UNION
ORIFICE
Fig. 17