Lennox VRB144 User Manual

5
Dimensions - Piping Details - inches (mm)
6-1/4 (159)
5-5/8 (143)
Low pressure gas valve
High pressure
gas balance valve
Low pressure gas pipe
(1-1/8 in. diameter 072-120 sizes)
(3/4 in. diameter)
High pressure
gas balance pipe
High pressure gas valve
(1-3/8 in. diameter 144-192 sizes)
Liquid side valve
Oil balance valve
Liquid side valve
Liquid side pipe
(5/8 in. diameter 072-120 sizes)
(3/4 in. diameter 144-192 sizes)
High pressure gas pipe
(1-1/8 in. diameter 072-120 sizes)
(1-3/8 in. diameter 144-192 sizes)
Oil balance pipe
(1/4 in. diameter)
Internal valve layouts are the same in both heat
recovery and heat pump units, it is their function that
is di󰀨erent. Pay close attention when making nal
piping connections.
Heat Recovery internal valve layouts are described
below. See the Heat Pump installation manual for
heat pump internal valve information.

Lennox VRB144 Specifications

General

Brand	Lennox
Model	VRB144
Category	Heating System
Language	English