Trane 4TWV0024A1000A Installer's Manual page 10

R R e e f f r r i i g g e e r r a a n n t t L L i i n n e e C C o o n n s s i i d d e e r r a a t t i i o o n n s s
Table 10. Reuse Existing Refrigerant Lines
C C A A U U T T I I O O N N
R R E E F F R R I I G G E E R R A A N N T T ! !
F F a a i i l l u u r r e e t t o o i i n n s s p p e e c c t t o o r r u u s s e e p p r r o o p p e e r r s s e e r r v v i i c c e e t t o o o o l l s s m m a a y y
r r e e s s u u l l t t i i n n e e q q u u i i p p m m e e n n t t d d a a m m a a g g e e o o r r 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 . .
I I f f u u s s i i n n g g e e x x i i s s t t i i n n g g r r e e f f r r i i g g e e r r a a n n t t l l i i n n e e s s m m a a k k e e c c e e r r t t a a i i n n t t h h a a t t
a a l l l l j j o o i i n n t t s s a a r r e e b b r r a a z z e e d d , , n n o o t t s s o o l l d d e e r r e e d d . .
For retrofit applications, where the existing indoor evaporator coil
and/or refrigerant lines will be used, the following precautions should
be taken.
• Ensure that the indoor evaporator coil and refrigerant lines are
the correct size.
• Ensure that the refrigerant lines are free of leaks, acid, and oil.
Important: For more information, see publication number SS-
APG006–EN
Table 11. Refrigerant Line Routing Precautions
Important: Comply with National, State, and Local Codes when isolating line sets from joists, rafters, walls, or other structural elements.
Important: Take precautions to prevent noise within the building structure due to vibration transmission from the refrigerant lines.
For Example:
• When the refrigerant lines must be fastened to floor joists or other framing in a structure, use isolation type hangers.
• Isolation hangers should also be used when refrigerant lines are run in stud spaces or enclosed ceilings.
• Where the refrigerant lines run through a wall or sill, they should be insulated and isolated.
• Isolate the lines from all duct work.
• Minimize the number of 90° turns.
Table 12. Isolation From Joist/Rafter
S id e Vie w
Secure Vapor Line from joists using isolators every 8 ft. Secure Liquid Line directly to insulated Vapor Line using tape, wire, or other appropriate
10
8 Fe e t Ma xim u m
8 Fe e t Ma xim u m
method every 8 ft.
J o is t/Ra fte r
Is o la to r
Lin e Se t
18-BC89D1-1D-EN