Refrigerant Piping Procedures; Units) - Trane Odyssey TWA0724 A Series Installation, Operation And Maintenance Manual

Refrigerant Piping Procedures

(Outdoor Units)
W W A A R R N N I I N N G G
R R - - 4 4 1 1 0 0 A A R R e e f f r r i i g g e e r r a a n n t t u u n n d d e e r r H H i i g g h h e e r r
P P r r e e s s s s u u r r e e t t h h a a n n R R - - 2 2 2 2 ! !
F F a a i i l l u u r r e e t t o o u u s s e e p p r r o o p p e e r r e e q q u u i i p p m m e e n n t t o o r r c c o o m m p p o o n n e e n n t t s s a a s s
d d e e s s c c r r i i b b e e d d b b e e l l o o w w , , c c o o u u l l d d 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 f f a a i i l l i i n n g g
a a n n d d p p o o s s s s i i b b l l y y e e x x p p l l o o d d i i n n g g , , w w h h i i c c h h c c o o u u l l d d r r e e s s u u l l t t i i n n
d d e e a a t t h h , , s s e e r r i i o o u u s s i i n n j j u u r r y y , , o o r r 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 . .
T T h h e e u u n n i i t t s s d d e e s s c c r r i i b b e e d d i i n n t t h h i i s s m m a a n n u u a a l l u u s s e e R R - - 4 4 1 1 0 0 A A
r r e e f f r r i i g g e e r r a a n n t t w w h h i i c c h h o o p p e e r r a a t t e e s s a a t t h h i i g g h h e e r r p p r r e e s s s s u u r r e e s s
t t h h a a n n R R - - 2 2 2 2 . . U U s s e e O O N N L L Y Y R R - - 4 4 1 1 0 0 A A r r a a t t e e d d s s e e r r v v i i c c e e
e e q q u u i i p p m m e e n n t t o o r r c c o o m m p p o o n n e e n n t t s s w w i i t t h h t t h h e e s s e e u u n n i i t t s s . . F F o o r r
s s p p e e c c i i f f i i c c h h a a n n d d l l i i n n g g c c o o n n c c e e r r n n s s w w i i t t h h R R - - 4 4 1 1 0 0 A A , , p p l l e e a a s s e e
c c o o n n t t a a c c t t y y o o u u r r l l o o c c a a l l T T r r a a n n e e r r e e p p r r e e s s e e n n t t a a t t i i v v e e . .
W W A A R R N N 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 u u n n d d e e r r H H i i g g h h P P r r e e s s s s u u r r e e ! !
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 i i n n s s t t r r u u c c t t i i o o n n s s b b e e l l o o w w c c o o u u l l d d r r e e s s u u l l t t i i n n
a a n n e e x x p p l l o o s s i i o o n n w w h h i i c c h h c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r
s s e e r r i i o o u u s s i i n n j j u u r r y y o o r r 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 . .
S S y y s s t t e e m m c c o o n n t t a a i i n n s s r r e e f f r r i i g g e e r r a a n n t t u u n n d d e e r r h h i i g g h h p p r r e e s s s s u u r r e e . .
R R e e c c o o v v e e r r r r e e f f r r i i g g e e r r a a n n t t t t o o r r e e l l i i e e v v e e p p r r e e s s s s u u r r e e b b e e f f o o r r e e
o o p p e e n n i i n n g g t t h h e e s s y y s s t t e e m m . . S S e e e e u u n n i i t t n n a a m m e e p p l l a a t t e e f f o o r r
r r e e f f r r i i g g e e r r a a n n t t t t y y p p e e . . D D o o n n o o t t u u s s e e n n o o n n - - a a p p p p r r o o v v e e d d
r r e e f f r r i i g g e e r r a a n n t t s s , , r r e e f f r r i i g g e e r r a a n n t t s s u u b b s s t t i i t t u u t t e e s s , , o o r r r r e e f f r r i i g g e e r r a a n n t t
a a d d d d i i t t i i v v e e s s . .
Each unit ships with a holding charge of dry nitrogen.
The nitrogen should be removed and the entire system
evacuated (at the proper time) to avoid possible
contamination.
1. Remove the compressor service access panel.
2. Locate the liquid and suction line access valves.
Check that the piping connection stubs
p. 19) line up properly with the holes in the unit
cabinet.
SSP-SVX001B-EN
Figure 12. Outdoor units - refrigerant piping (with dry
nitrogen)
Manifold
3. Install gauges to determine if the circuits are still
(Figure 12,
S S y y s s t t e e m m C C o o m m p p o o n n e e n n t t D D a a m m a a g g e e ! !
D D o o n n o o t t r r e e m m o o v v e e t t h h e e s s e e a a l l c c a a p p s s f f r r o o m m r r e e f f r r i i g g e e r r a a n n t t
c c o o n n n n e e c c t t i i o o n n s s u u n n t t i i l l p p r r e e p p a a r r e e d d t t o o b b r r a a z z e e 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 t t o o t t h h e e c c o o n n n n e e c c t t i i o o n n s s . . E E x x c c e e s s s s i i v v e e e e x x p p o o s s u u r r e e t t o o
a a t t m m o o s s p p h h e e r r e e ( ( > > 5 5 m m i i n n . . ) ) m m a a y y a a l l l l o o w w m m o o i i s s t t u u r r e e o o r r d d i i r r t t
t t o o c c o o n n t t a a m m i i n n a a t t e e t t h h e e s s y y s s t t e e m m , , d d a a m m a a g g i i n n g g v v a a l l v v e e s s e e a a l l s s
a a n n d d c c a a u u s s i i n n g g i i c c e e f f o o r r m m a a t t i i o o n n i i n n s s y y s s t t e e m m c c o o m m p p o o n n e e n n t t s s . .
Gauges
Gas Line Gauge Port
Liquid Line Gauge Port
pressurized. If not, the charge has escaped and
should be repaired as required to obtain a leak-free
circuit. If the circuits are still pressurized, use the
gauges to slowly release the nitrogen charge to the
atmosphere and remove both seal caps from the
outdoor unit connection stubs.
N N O O T T I I C C E E
I I n n s s t t a a l l l l a a t t i i o o n n
19