Lennox G43UF SERIES - Page 15

SERVICE VALVES ANGLE AND BALL
Operating Angle Type Service Valve:
1, Remove stem cap with an ~teIy sizlld wrench.
2. Use a service wrench wilh a hex-head elC1eneion (3/16' for liquid line velve ei%6118nd 5116" for vapor line vllive sizes) to back
Ihe Glom Ollt counterclockwise at: far A& It will go.
(VALVE STEM SHOWN OPEN)
INSEFrr I1EX WRENCH HERE
TO INllOOR -1-"":>"';;:-:;;os:---11
UNIT
SERVICE PORT
CORE
TO OUTDOOR UNIT
ANOL£TYPE SERVICE VALVE
(BACI<-llEATED OPENED)
When seollce vBlve is OPEN. lhe eervice port is
open to linE liel. indoor and outdoor uni\.
STEM CAP
ANOLE·rfPE SERVICE VALliE
(fRONT -SEATED CLOSED)
WHEN 6ERVICE VN..VE 16 CLOSED. THE 5ERVIC~ PORT 16 OPEN
TO THE LINE SET AND INDOOR UNIT.
Operating Ball Type Service Valve:
1. Remove slem cap wiUI an apprtlIlIial8l)' sized wrench.
2. Use sn appropriately sized wrenched 10 open. To open valve,
roale £tem oounlerdocl<wlse 90'. To close rotale stem e1OCkWlOB
90'.
1/& TURN
1/1HUIIH
Wilh Torque Wrench: !=Inger IighIen and
then lorque cap p9I' ~ 1.
WIthout Torque Wrench: Flnger Ifghl-
en ar1d use an approprlalely sized
wrench 10 lum an add1tl0l'l1l11/12 tum
clockwise.
• Wilh lorque wrench; Finger tighten and
lorque cep per table 1.
• Wilhoul torque wranch: Finger tighten and
\l6e an appropliolely sized wrench 10 lum
an addl~0l'lal1/8 lum clockwise.
•
Reinstall Stem Cap:
Stem cap prQtecl6 Ihe valve slem from damage and serve& all the
prlmary S"'i11. Repla06 the stem cap and tighten as follCM'S:
To Access SeNice Port:
A 6ervice port cap ptotects Ihe service port QC)re from conlamlnallon and
serves as Ihe primal)' leak seal.
1. Remove servico port alP with an appropiBteIy sized wrendl.
2. Connect gauge set 10 &8!V~ pc;lrt,
3. ~ IeliUng is CXlIT1p1elAld. replaoe s6IVice pori cap and tighten as
lDliaMl:
BAL~(SHOWN
CLOSED)
VALVE
/STEM
TO OUTDOOR
UNIT
SERVICE POAT
SERViCE PORT
CORE
SERVICE PORT
CAP
TO OPEN ROTATE STEM
COUNTERCLOCKWISE 90',
TO CLOSI: ROTATE STEM
CLOCKWISE 90'.
NOTE - A label with &pecific Iorque requlremenb may be amxEld to the slem cap If Ihe label is present, use the speclnBd torque.
Figure 1. Angle lind Ball Service Valves
Page 8
~WSS:S OlOl 'Sl'daS
9l 'd
6VL8 'Ol~
~I
'i""l$n'f"7)~-
,,·""* .... 15'