Midea ATOM MDV-V48WDHN1

-I Atom B Series VRF 50/60Hz
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Part 3 - System Design and Installation
3.4 The Permitted Piping Lengths and Level Differences
The piping length and level difference requirements that apply are summarized in Table 3-3.2 and are fully described as
follows (refer to Figure 3-3.1 and Figure 3-3.2):
Table 3-3.2: Summary of permitted refrigerant piping lengths and level differences
Permitted value
Piping
iPipe Length
Total Pipe Length(Actual)
≤50m(28 model)
L1+L2+L3+a+b+c+d+e+f+g+h+i
≤65m(36/42 model)
≤100m(48/56 model)
Maximum Piping
Actual Length
≤35m(28 model)
L1+max (a,b,c,d,e,f)
(the number of IDU less than 6)
L1+L2+max (a,b,c,d) or
L1+L3+max (e,f,g,h,i)
(the number of IDU more than 6)
≤45m(36/42 model)
≤60m(48/56 model)
Equivalent Length
≤40m(28 model)
≤50m(36/42 model)
≤70m(48/56 model)
Pipe Length(IDU to the nearest branch)
≤15m
a,b,c,d,e,f,g,h,i
Level
difference
Level difference
between IDU~ODU
Outdoor Unit Up
≤10m (28 model)
----
≤20m (36/42 model)
≤30m (48/56 model)
Outdoor Unit
Down
≤10m (28 model)
----
≤20m (36/42 model)
≤20m (48/56 model)
Level difference between IDU~IDU
≤10m
----
Figure 3-3.1: The number of IDU less than 6
Figure 3-3.2: The number of IDU more than 6