Lennox VRB Series User Manual

17
INDOOR UNIT MAIN PIPE SELECTION (L1 to L13)
Indoor Unit
Total Capacity
(kBtuh)
Indoor Unit Main Pipe Diameter (in.)
Branch Pipe
Assembly
Low Pressure
Gas Pipe
High Pressure
Gas Pipe
Liquid Pipe
A < 018 1/2 3/8 1/4 V8MSBP01
018 ≤ A < 056 3/4 5/8 3/8 V8MSBP01
056 ≤ A < 078 7/8 3/4 3/8 V8MSBP02
078 ≤ A < 112 7/8 3/4 1/2 V8MSBP02
112 ≤ A < 156 1-1/8 7/8 1/2 V8MSBP03
156 ≤ A < 224 1-1/8 7/8 5/8 V8MSBP03
224 ≤ A < 314 1-3/8 1-1/8 3/4 V8MSBP04
314 ≤ A < 460 1-5/8 1-3/8 3/4 V8MSBP05
460 ≤A 1-5/8 1-3/8 7/8 V8MSBP05
OUTDOOR UNIT MAIN PIPE SELECTION (L1)
Outdoor
Unit
Size
Main Pipe Diameter (in.)
Equivalent length of all liquid pipes
is less than 295 ft. (90 m)
First
Branch
Pipe
Assembly
Equivalent length of all liquid pipes
is more than 295 ft. (90 m)
First
Branch
Pipe
Assembly
Low
Pressure
Gas Pipe
High
Pressure
Gas Pipe
Liquid
Pipe
Low
Pressure
Gas Pipe
High
Pressure
Gas Pipe
Liquid
Pipe
072 7/8 3/4 3/8 V8MSBP02 7/8 3/4 1/2 V8MSBP02
096 7/8 3/4 3/8 V8MSBP02 7/8 3/4 1/2 V8MSBP02
120 1-1/8 3/4 1/2 V8MSBP03 1-1/8 3/4 5/8 V8MSBP03
144 1-1/8 7/8 1/2 V8MSBP03 1-1/8 7/8 5/8 V8MSBP03
168-216 1-3/8 1-1/8 5/8 V8MSBP04 1-3/8 1-1/8 3/4 V8MSBP04
240 1-3/8 1-1/8 5/8 V8MSBP04 1-3/8 1-1/8 3/4 V8MSBP04
264-312 1-3/8 1-1/8 3/4 V8MSBP04 1-3/8 1-1/8 7/8 V8MSBP04
336-432 1-5/8 1-3/8 3/4 V8MSBP05 1-5/8 1-3/8 7/8 V8MSBP05
432~ 1-5/8 1-3/8 3/4 V8MSBP05 1-5/8 1-3/8 7/8 V8MSBP05
Note - The Main Pipe (L1) can be selected from the Outdoor Unit Main Pipe Selection table or the Indoor Unit Main Pipe Selection table, the larger size must be used.
OUTDOOR UNIT PIPE SELECTION (g1, g2, g3, G1)
Pipe
Outdoor Unit
Size
Pipe Diameter (in.)
Low Pressure Gas Pipe High Pressure Gas Pipe Liquid Pipe
G1 408, 432, 456, 480, 504 1-5/8 1-3/8 7/8
g1, g2, g3
6 or 8-ton 7/8 3/4 1/2
10 or 12-ton 1-1/8 7/8 5/8
14 or 16-ton 1-3/8 1-1/8 3/4
OUTDOOR UNIT BRANCH PIPE ASSEMBLY SELECTION (L, M)
Outdoor Unit Quantity Parallel Connection with Branch Pipes
2 units L use V8ODBP02HR-3
3 units L + M use V8ODBP03HR-3
INDOOR UNIT AUXILIARY PIPE SELECTION (Between Branch Box (MS) And Downstream Branch Joint) (a, g, j, k)
Indoor Unit Capacity (kBtuh)
Pipe Diameter (in.)
Available Branch Pipe
Gas Pipe Liquid Pipe
A<56 5/8 3/8 V8IDBP01

Lennox VRB Series Specifications

General

Brand	Lennox
Model	VRB Series
Category	Heating System
Language	English