Connection Between Indoor And Outdoor Units - York ERJC 36 Installation Instructions Manual

Installation Instructions
b. Capacity Level and Capacity Code of the Indoor and Outdoor Units
Indoor Unit
Outdoor Unit
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
Total Length(m)
Max. Length for Single Unit(m)
Outdoor unit
Max.
and indoor unit
installation
Indoor unit and
altitude
indoor unit
Table 4: Dimension of the Refrigerant Pipe of the Indoor Unit
Capacity Level of the Indoor Unit
09,12
18
21,24
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.
Table 2
Capacity Level
09
12
18
21
24
36
42
Table 3
Allowable Length
36 42
70 80
20 25
15 15
7.5 7.5
Gas Pipe
φ9.52
φ12.7
φ15.9
6
Capacity Code
25
35
50
60
71
100
120
Refrigerant Pipe
36
L +L +L + L L +L +L
1 2 3 4 1 2
L
X
H1
H2
unit ： mm
Liquid Pipe
φ6.35
φ6.35
φ9.52
by johnson controls
42
+ L + L
3 4 5
9