Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 893

(3) Specification of unit piping (Pipe diameter, Connecting method)
(a) Unit
1) Outdoor unit
Item
Model
FDC140 type
FDC224 type
FDC280 type
2) Indoor unit
Item
Model
22, 28 type
36 type
45 type
56,71,90 type
112,140 type
3) Connection piping specification: Outer diameter and wall thickness (mm)
For R22
Outer diameter (mm) Wall thickness (mm) Outer diameter (mm) Wall thickness (mm)
φ6.35
0.8
φ9.52
0.8
φ12.7
1.0
φ15.88
1.0
4) Tightening torque
φ 6.35(1/4 ") Flare nut
φ 9.52(3/8 ") Flare nut
φ 12.7(1/2 ") Flare nut
φ 15.88(5/8 ") Flare nut
φ 19.05(3/4 ") Flare nut
Gas line
Pipe diameter Connecting method
φ19.05 (
3 / ") Flare
4
φ25.4 (1 ")
Brazing
φ28.58 (1
1
/ ")
8
Gas line
Pipe diameter Connecting method
φ12.7 (
1
/ ")
2
φ12.7 (
1
/ ")
2
φ12.7 (
1 / ") Flare
2
φ15.88 (
5 / ")
8
φ19.05 (
3 / ")
4
φ19.05
1.0
φ25.4
1.2
φ28.58
1.4
16 ~ 20 N • m (1.6 ~ 2.0 kg • m)
40 ~ 50 N • m (4 ~ 5 kg • m)
40 ~ 50 N • m (4 ~ 5 kg • m)
90 ~ 120 N • m (9 ~ 12 kg • m)
100 ~ 140 N • m (10 ~ 14 kg • m)
Pipe diameter
φ9.52 (
3 / ")
8
φ12.7 (
1
/ ")
2
φ12.7 (
1
/ ")
2
Pipe diameter
φ6.35 (
1
/ ")
4
φ6.35 (
1
/ ")
4
φ6.35 (
1 / ")
4
φ9.52 (
3 / ")
8
φ9.52 (
3 / ")
8
For R407C
Outer diameter (mm) Wall thickness (mm) Outer diameter (mm) Wall thickness (mm)
φ6.35
0.8
φ9.52
0.8
φ12.7
1.0
φ15.88
1.0
FDC-HKX
Unit: mm(in)
Liquid line
Connecting method
Flare
Unit: mm(in)
Liquid line
Connecting method
Flare
φ19.05
1.2
φ25.4
1.4
φ28.58
1.4
891