Service Valves - Trane 4TWV7X24A1000A Installer's Manual

Service Valves

Table 18. Open the Gas Service Valve
Important: Leak check and evacuation must be completed before
opening the service valves.
Note: Do not vent refrigerant gases into the atmosphere.
1. Remove valve stem cap.
2. Using a wrench, turn valve stem 1/4 turn counterclockwise to
the fully open position.
3. Replace the valve stem cap to prevent leaks. Tighten finger
tight plus an additional 1/4 turn.
Table 19. Open the Liquid Service Valve
W W A A R R N N I I N N G G
S S E E R R V V I I C C E E V V A A L L V V E E S S ! !
F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w t t h h i i s s w w a a r r n n i i n n g g w w i i l l l l r r e e s s u u l l t t i i n n a a b b r r u u p p t t
r r e e l l e e a a s s e e o o f f s s y y s s t t e e m m c c h h a a r r g g e e a a n n d d m m a a y y r r e e s s u u l l t t i i n n
p p e e r r s s o o n n a a l l i i n n j j u u r r y y a a n n d d / / o o r r p p r r o o p p e e r r t t y y d d a a m m a a g g e e . .
E E x x t t r r e e m m e e c c a a u u t t i i o o n n s s h h o o u u l l d d b b e e e e x x e e r r c c i i s s e e d d w w h h e e n n
o o p p e e n n i i n n g g t t h h e e S S u u c c t t i i o o n n a a n n d d L L i i q q u u i i d d L L i i n n e e S S e e r r v v i i c c e e
V V a a l l v v e e . . T T u u r r n n v v a a l l v v e e s s t t e e m m c c o o u u n n t t e e r r c c l l o o c c k k w w i i s s e e o o n n l l y y
u u n n t t i i l l t t h h e e s s t t e e m m c c o o n n t t a a c c t t s s t t h h e e r r o o l l l l e e d d e e d d g g e e . . N N o o t t o o r r q q u u e e
i i s s r r e e q q u u i i r r e e d d . .
Important: Leak check and evacuation must be completed before
opening the service valves.
4. Remove service valve cap.
5. Fully insert 3/16" hex wrench into the stem and back out
counterclockwise until valve stem just touches the rolled edge
(approximately five (5) turns).
6. Replace the valve cap to prevent leaks. Tighten finger tight
plus an additional 1/4 turn.
18-BC111D1-1A-EN
Cap
Unit Side
of Valve
Pressure Tap Port
Cap
Unit Side
of Service
Valve
Service Port
1/4 Turn Only
Counterclockwise
for Full Open Position
Valve Stem
Gas Line Connection
3/16" Hex Wrench
Rolled Edge to
Captivate Stem
Hex Headed
Valve System
15