Air Handler
8
4.3 Piping Work
4.3.1 Specification of Connection Pipe
Table 6
Model
External Diameter (inch)
Gas Pipe(in)
Liquid Pipe(in)
HNF13018/A-D
5/8
3/8
HNF13024/A-D
5/8
3/8
HNF13030/A-D
3/4
3/8
HNF13036/A-D
3/4
3/8
HNF13042/A-D
7/8
3/8
HNF13048/A-D
7/8
3/8
HNF13060/A-D
1 1/8
1/2
4.3.2 Piping Preparation
All cut ends are to be round, burr free, and cleaned. Failure to follow this practice increases the
chances for refrigerant leakage.
Piping Size
For the correct piping size, follow the specification for the condenser/heat pump.
Line set size matches service
valve connection
Do not crimp service valve connector
when pipe is smaller than connector
Fig. 4
