59
HELIX™ Manual
(P/N 26291)
Chapter 4: System Installation
Rev A (February 2018)
HELIX™ PCU
Fire Suppression System
1. FULLY INSTALL
LHD PER SECTION
4.7.3
JAM NUT
(BULKHEAD)
LOCK WASHER
SEALING WASHER
BODY
3/4” (19 mm) HOLE
Figure 4.7.5a
LHD (P/N 24744
-
XX)
UNINSTALLED MALE
CONNECTOR END OF LHD
COMPRESSION NUT,
LOOSENED
INTERNAL FIBER SEAL
Figure 4.7.5b
2. TIGHTEN COMPRESSION
NUT UNTIL FULLY
BOTTOMED
Figure 4.7.5c
1. FULLY INSTALL LHD PER
SECTION 4.7.3
(BULKHEAD)
LOCK WASHER
SEALING WASHER
BODY
1
-
1/8” (29 mm) HOLE
Figure 4.7.5d
JAM NUT
LHD (P/N 24744
-
XX)
UNINSTALLED MALE
CONNECTOR END OF LHD
COMPRESSION NUT,
LOOSENED
INTERNAL FIBER SEAL
Figure 4.7.5e
2. TIGHTEN COMPRESSION
NUT UNTIL FULLY BOTTOMED
Figure 4.7.5f
COMPR. SEAL
(P/N 26427)
QUIK SEAL (P/N 14204)
(CONDUIT/ JUNCTION BOX)
(1/2 NPT)
INDOOR
APPLICATION
OUTDOOR
APPLICATION
(OUTSIDE PCU)