EMI S1CG - Refrigerant Piping Practices; Piping Handling and Brazing Procedures; Refrigerant Piping Installation Precautions

S1CG/S1HG
S
in
g
le-Zone, S2CG/S2H
G
Dual-Zone
•
I
nstallation,
Op
eration and Maintenance Manual •
Comfort where it counts 12 P/N 240007754, Rev. C [3/19/2010]
Refrigerant Piping (continued)
Clean ends of tubingFigure 15
Wet rag “heat shield over valvesFigure 16
S2CG
S2CG
S1CG
S1CG
Shown
Shown
Make a shield to protect paintFigure 17
S1CG
S1CG
Shown
Shown
S2CG
S2CG
Shown
Shown
CAUTION
Avoid piping on wet and rainy days.•
Use only clean, refrigeration-grade •
copper tubing.
Use tubing benders to guard against •
kinking.
Be certain no burrs remain on the •
  ings.
Cap ends of lines until ready for con-•
nections.
Be certain that plastic end caps remain •
in place when inserting through wall
openings.
Insulate the suction line.•
Isolate tubing from transmi ing vibra-•
tion to the building or unit and avoid
contact with sharp edges.
Wrap refrigeration valves with a wet •
rag “heat sink” to protect valves while
brazing. (See Figure 16, Page 12 .)
Refrigerant piping
Clean the ends of tubing and insert into 1.
  ings ( Figure 15 ).
Protect valves by wrapping with a wet rag 2.
“heat sink” before brazing ( Figure 16 ).
Use a shield to protect the paint as shown 3.
in Figure 17 . ( e shield can be made
from scrap metal.)
Braze tubing into   ings.4.
Install all panels removed to this point. 5.
Panels are required for proper air  ow.