Specifications

233
b When the indoor unit capacity is less than 56 (not including 56).
Gas piping
Liquid piping Use different diameter adapter coupling C.
OD9.52 → ID6.35
Cut off the different diameter adapter coupling B with a pipe
cutter as shown in the illustration and then make a flare.
OD15.88 → ID12.7
Flare connection
On-site insulation Hold with accessory
band
Flang connection
On-site insulation Use sealing tape.
3 Refrigerant piping insulation
Be sure to insulate the pipe connection with a pipe cover or flange cover.
(3) Specification of unit piping (Pipe diameter. Connecting method)
(a) Unit
1) Outdoor unit
Unit: mm (in)
4) Tightening torque
14~18N · m
34~42N · m
49~61N · m
68~82N · m
100~120N · m
30~40N · m
φ6.35 (1/4") Flare nut
φ9.52 (3/8") Flare nut
φ12.7 (1/2") Flare nut
φ15.88 (5/8") Flare nut
φ19.05 (3/4") Flare nut
Gas side flange bolt
Item
Model
FDCP224HKXRE2A
224HKXRE2V
FDCP280HKXRE2A
280HKXRE2 V
Intake gas line
Pipe diameter
φ25.4 (1")
φ28.58 (1 1/8")
Connecting method
Brazing
Liquid line
Pipe diameter
φ12.7 (1/2")
φ12.7 (1/2")
Connecting method
Brazing
Discharge gas line
Pipe diameter
φ19.05
φ19.05
Connecting method
Brazing
2) Indoor unit
Unit: mm (in)
Item
Model
22, 28 type
36 type
45 type
56, 71, 90 type
112, 140 type
Gas line
Pipe diameter
φ12.7 (1/2")
φ12.7 (1/2")
φ12.7 (1/2")
φ15.88 (5/8")
φ19.05 (3/4")
Connecting method
Flare
Liquid line
Pipe diameter
φ6.35 (1/4")
φ6.35 (1/4")
φ6.35 (1/4")
φ9.52 (3/8")
φ9.52 (3/8")
Connecting method
Flare
3) Connection piping specification: Outer diameter and wall thickness
Outer diameter (mm)
φ6.35
φ9.52
φ12.7
φ15.88
Wall thickness (mm)
0.8
0.8
0.8
1.0
Outer diameter (mm)
φ19.05
φ25.4
φ28.58
Wall thickness (mm)
1.0
1.0
1.0