McQuay MDS080B, Installation Manual

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©2005 McQuay International
15
Controller
Indoor
unit
Distributor
（
3
）
Multi bifurcation and distributors
●
It is not allowed to connect bifurcation with distributor, as shown as below:
7
．
． ．
．
3 Connecting of refrigerant piping
●
Copper tube selection: to select the main tube and branch tube and get them connected, the table is shown as below:
Outdoor model
MDS080B(R)/
MDS100B(R)
MDS120B(R)
MDS150B(R)/MDS180B(R)
/MDS200B(R)
MDS220B(R)/
MDS240B(R)
MDS260B(R)/MDS280B(R)
/MDS300B(R)/ MDS320B(R)
Outdoor and the first bifurcation
Liquid
φ
12.7
φ
15.88
φ
15.88
φ
19.05
φ
19.05
Gas
φ
28.6
φ
28.6
φ
34.9
φ
38.1
φ
41.3
Between the gas distributors
<16kW
φ
9.52
16kW
≤
C<22.5kW
φ
12.7
22.5kW
≤
C<50kW
φ
12.7
φ
15.88
Liquid
Capacity
50kW
≤
C<85kW —— —— ——
φ
19.05
<9kW
φ
15.88
9kW
≤
C<16kW
φ
19.05
16kW
≤
C<22.5kW
φ
22.23
22.5kW
≤
C<36kW
φ
28.6
46kW
≤
C<50kW —— ——
φ
34.9
50kW
≤
C<69kW —— —— ——
φ
38.1
Gas Capacity
69kW
≤
C<85kW —— —— —— ——
φ
41.3
Branch tube connector and indoor units
Liquid Tube diameter of indoor unit Same as the indoor connector
Gas Tube diameter of indoor unit Same as the indoor connector
Note: For choosing the piping materials and radial thickness, please refer to Appendix B: R22 Piping Materials/Radial Thickness
●
Selection of bifurcation
According to the diameter tube connected, to use the below table to select the right bifurcation;
Wrong connection
Indoor unit
Controller
Bifurcation
Distributer
Wrong connection
Wrong connection