8
INSTALLATION(continued)
1. Determine thebest mountingarrangement forthe
RuptureSeal™inrelationtothechiller’sexistingrelief
outletandventpiping. Alsodetermineifsupplemental
supportforthevalvewill benecessary(seeFigure7on
page 10).Notethat thevalvebodycan berotated 360°to
orienttheoutlettotheventpipe.Torotatethevalvebody,
loosen(donot remove)thefive(5)valvebodylocking
screws(seeAppendix“C” onpage16forillustrations).
Onceinposition, re-tighten(donotovertighten)thefive(5)
valvebodylockingscrews.(See Figure3onpage9for
location oflockingscrews.)
2The RuptureSeal™“valve”canbe mountedineithera
verticalorhorizontalposition(see Figure1 - Typical
Installation).TheNRS-3cannotbemountedupside
down.
NOTE: Regardless ofNRS-3’smounting position,theDoubleCheck PressureEqualizing Valve (22)
MUST bemountedverticallywiththefilter/vent (34) pointingup(é).
3. Determinehowmuchoftheexistingrupturedisk
ventpipingwill havetobe removed to
accommodatethe RuptureSeal™. Cutoutand
removethissection of piping.
4. It isrecommendedthataflexiblemetal
connection (33) anda3”NPTunion (12) be
installedasillustratedinFigure2.
5. Theinstallershall determine thebestwayto
plumbthedischargevent lineusingfigure2as
apipingguide.
6.Insertthe Flange Gasketbetween the Valve
InletFlange andtheexistingchillerrupturedisk
flange.
7.Usingthefourflangeboltsprovided,mountthe
valvetothe chillerrupturedisk flange.Tighten
boltssufficientlytoassureproperleakfreeseal.
Chiller
Figure 1
Typical Installation
(SeeAppendix“C”for otherillustrations)
(11) VentPipe
(33) Flexible
Metal
Connection
(37 Water
drain
hole
connection
to drip leg
Chiller
(31)
Drip
Leg
(12) 3" NPT
Union (24) Valve
Body
water
drain
hole
Figure 2.
Vent Pipe Hook-up
