Lennox REAL VPC H4-3P Series

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Table 6. Main Outdoor Piping Sizes for One-to-One Connection to Non-VRF Air Handler of Furnace
Retrot Installations
Table 7. Main Indoor Piping Sizes for Connection to VRF Indoor Units and AHU Control Kits
INDOOR MAIN PIPE SELECTION (L3, L4, L5, L6)
Downstream Indoor Unit
Capacity (Btuh)
Gas (Vapor) Pipe Diameter Liquid Pipe Diameter Indoor Unit Branch Pipe
A < 56,700 5/8 in. 3/8 in. V8IDBP01
56,700 ≤ 78,500 3/4 in. 3/8 in. V8IDBP01
ALLOWABLE LINE SET DIAMETER FROM EXISTING SYSTEM WITH NON-VRF AIR HANDLER OR COIL/FURNACE
Model No.
Outdoor Unit Existing Line Sets
Gas Pipe
Connection
Liquid Pipe
Connection
Gas Pipe
Existing Line Set
Diameter
Liquid Pipe
Existing Line Set
Diameter
5/8 in. 3/4 in. 7/8 in. 1-1/8 in. 1/4 in. 5/16 in. 3/8 in.
VPC018H4M-3P 3/4 in. 3/8 in. ¹ • • N/A N/A ⁴ • ⁵ • •
VPC024H4M-3P 3/4 in. 3/8 in. ¹ • • N/A N/A N/A ⁵ • •
VPC036H4M-3PS 3/4 in. 3/8 in. N/A • N/A N/A N/A ⁵ • •
VPC036H4M-3PD 3/4 in. 3/8 in. N/A • ² • N/A N/A N/A •
VPC048H4M-3P 7/8 in. 3/8 in. N/A N/A • ³ • N/A N/A •
VPC060H4M-3P 7/8 in. 3/8 in. N/A N/A • ³ • N/A N/A •
1
Field provided 3/4 x 5/8 in. adaptor required for gas (vapor) pipe connection to outdoor unit.
2
Field provided 3/4 x 7/8 in. adaptor required for gas (vapor) pipe connection to outdoor unit.
2
Field provided 7/8 x 1-1/8 in. adaptor required for gas (vapor) pipe connection to outdoor unit.
4
Field provided 3/8 x 1/4 in. adaptor required for liquid pipe connection to outdoor unit.
5
Field provided 3/8 x 5/16 in. adaptor required for liquid pipe connection to outdoor unit.