York ERJC 36, Installation Instructions Manual

Page: 9 / 28

by johnson controls
9
Installation Instructions
6
b. Capacity Level and Capacity Code of the Indoor and Outdoor Units
Table 2
Capacity Level Capacity Code
Indoor Unit
09 25
12 35
18 50
21 60
24 71
Outdoor Unit
36 100
42 120
1) The outdoor unit with capacity level 36 can drive up to four sets of indoor units, while the outdoor unit
42 can drive up to five.
2) The sum of the capacity codes of the indoor units should be among 50%-150% of that of the outdoor
unit.
c. Allowable Length and Height Fall of the Refrigerant Pipe
Table 3
Allowable Length Refrigerant Pipe
36 42 36 42
Total Length(m) 70 80 L
1
+L
2
+L
3
+ L
4
L
1
+L
2
+L
3
+ L
4
+ L
5
Max. Length for Single Unit(m) 20 25 L
X
Max.
installation
altitude
Outdoor unit
and indoor unit
15 15 H1
Indoor unit and
indoor unit
7.5 7.5 H2
Table 4: Dimension of the Refrigerant Pipe of the Indoor Unit unit
：
mm
Capacity Level of the Indoor Unit Gas Pipe Liquid Pipe
09,12 φ9.52 φ6.35
18 φ12.7 φ6.35
21,24 φ15.9 φ9.52
d. Piping between the Indoor and Outdoor Units
1) Refer to Fig.6 for the moments of torque for tightening screws.
2) Let the flare end of the copper pipe point at the screw and then tighten the screw by hand.
3) After that, tighten the screw by the torque wrench unit it clatters (as shown in Fig.6).
4) The bending degree of the pipe can not be too small; otherwise it will crack. And please use a pipe
bender to bend the pipe.
5) Wrap the exposed refrigerant pipe and the joints by sponge and then tighten them with the plastic tape.