Trane TTKE12SB5EAA, Owner'S Manual & Installation Manual

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MCXE-IOM 15
Refrigerant Piping Connection
Cautions before connection tubes tightly
1.
2.
Be sure to apply a sealing cap or waterproof tape to prevent
dust or water from getting into the tubes before they are used.
Be sure to apply refrigerant lubricant to the matching surfaces
of the flare and union before connection them together. This is
effective forreducing gas leaks.
3. For proper connection, align the union tube and flare tube
straight with each other, then screw in the flare nut lightly at
first to obtain a smooth match.
4.
5.
Tighten the flare nut to the specified tightening torque with
torque wrench and adjustable wrench.
Repeat the process above for the remain line.
Do not open service valve at liquid pipe and gas pipe until
finish installation and vacuum.
Tightening torque and size of L-Wrench
Tightening torque for valve cap 10-15 lb-in (11.52-17.3 kg-cm)
Caution
6.35 mm.
Millimeter Millimeter Inch
Tube Diameter Tightening torque
Size of
L-Wrench
N - m lb - in
f
(1/4”) 25-30 4
9.53 mm. (3/8”) 25-30 4
12.70 mm. (1/2”) 60-70 5
15.88 mm. (5/8”) 60-70 5
19.05 mm. (3/4”)
2.82-3.39
28.9-34.6
6.68-7.91
69.1-80.7
11.30-13.56 100-120 6
Flare nut / Piping size Tightening torque
Tube Diameter Thickness Tightening torque
1/4” Ø 6.35
Ø 12.70
Ø 15.88
Ø 19.05
Ø 9.53 3/8”
1/2”
5/8”
3/4”
15-20
•
•
•
•
•
132-177
31-35 274-310
50-55 443-487
60-65 531-575
70-75 620-664
N-m mm mm inch ib
ƒ
- in
1/4" (6.35)
3/8" (9.53)
1/2" (12.70)
5/8" (15.88)
3/4" (19.05)
1.0 - 2.0
1.0 - 3.0
1.0 - 2.0
1.0 - 3.0
1.0 - 3.0 8.6 - 9.7
12.4 - 13.9
15.7 - 16.1
19.0 - 20.3
22.4 - 22.7
Flaring copper tube
Outside diameter
Inch (mm.)
H, (mm.) D, (mm.)
Flaring Procedure
1.
2.
Cut the copper tube to the recommend to cut aprox. 30-50 cm
longer than the tubing length you estimate.
Hold each tube downward when cutting, remove burrs at
the end of the copper tube with a tube reamer or file.
This process is important and should be done carefully
to make a good flare.
3.
4.
Remove the flare nut from the service valve and be sure
to insert the flare nut onto tube.
Make a flare at the end of copper tube with a flare tool.
A good flare should have the following characteristics:
•
•
• Inside surface is glossy and smooth.
Edge is smooth.
Tapered sides are of uniform length.
When reaming, hold the tube end downward and be sure
that no copper scraps fall into the tube.