Lennox REAL VPC H4-3P Series

17
6
A
B
C
D
E
First Branch Pipe
Indoor Units
Maximum Piping Equivalent Length
L3
L2
L4
L5
L
L1
Maximum Permitted Refrigerant Pipe Length and Maximum Height Difference - With Branch Pipe
Maximum Height Difference Outdoor Unit to Indoor Unit
Maximum Height Difference Indoor Unit to Indoor Unit
Maximum Piping Equivalent Length
from First Branch Pipe to farthest Indoor Unit
NOTE - See Refrigerant Pipe Selection Table to size Main Outdoor Pipe.
Outdoor
Unit
Description Designation
Main Outdoor Pipe - from outdoor unit to rst branch pipe L1
Main Indoor Pipe - from branch pipe to branch pipe L3, L4, L5, L6
Indoor Unit Pipe - from branch pipe to indoor unit L2, A, B, C, D, E
Length and Maximum Height Di󰀨erence Maximum Permitted Length Piping
Pipe Length
Total Piping Length (Actual) ≤492 ft. (150 m)
L1+L2+L3+L4+L5+L6
+A+B+C+D+E
Maximum Piping Length
Actual Length ≤296 ft. (90 m)
L1+L3+L4+L5+L6+E
Equivalent Length ≤328 ft. (100 m)
Pipe length (from the rst line branch pipe to farthest
indoor unit)
≤131 ft. (40 m) L3+L4+L5+L6+E
Maximum
Height
Di󰀨erence
Indoor Unit to Outdoor Unit
Maximum Height Di󰀨erence
Outdoor Unit Up ≤164 ft. (50 m) - - -
Outdoor Unit
Down
≤131 ft. (40 m) - - -
Indoor Unit to Indoor Unit Maximum Height Di󰀨erence ≤49 ft. (15 m) - - -
NOTE - Each branch pipe equals 20 in. (508 mm) equivalent straight pipe length.