Section 5. Refrigerant Line Considerations - Trane 4TTR4018-060 Installation And Operation Manual

Section 5. Refrigerant Line Considerations

5.1 Refrigerant Line and Service Valve Connection Sizes
5.2 Factory Charge
The outdoor condensing units are factory
charged with the system charge required for the
outdoor condensing unit, ten (10) feet of tested
connecting line, and the smallest rated indoor
evaporative coil match. Always verify proper
system charge via subcooling (TXV/EEV) or
superheat (fixed orifice) per the unit nameplate.
See table for line length adders.
5.3 Required Refrigerant Line Length
Determine required line length and lift. You will
need this later in STEP 2 of Section 14.
Total Line Length = __________ Ft.
Total Vertical Change (lift) = __________ Ft.
6
Line Sizes
Vapor
Model
Line
4TTR4018N 3/4
4TTR4019N 3/4
4TTR4024N
3/4
4TTR4025N 3/4
4TTR4030N
3/4
4TTR4036N
3/4
4TTR4042N
7/8
4TTR4048N 7/8
4TTR4049N 7/8
4TTR4060N 1-1/8
4TTR4018L 3/4
4TTR4024/25L 3/4
4TTR4030/31L
3/4
4TTR4036/37L 3/4
4TTR4036/37M
3/4
4TTR4042/43L
7/8
4TTR4048L 7/8
4TTR4060L 7/8
Table 5.1
Service Valve Connection Sizes
Liquid Vapor Line
Line Connection
3/8 3/4
3/8 3/4
3/8 3/4
3/8 3/4
3/8 3/4
3/8 3/4
3/8 3/4
3/8 7/8
3/8 7/8
3/8 7/8
3/8 3/4
3/8 3/4
3/8 3/4
3/8 3/4
3/8 3/4
3/8 7/8
3/8 7/8
3/8 7/8
LINE TYPE
Suction Liquid
Line Line
3/4" 3/8"
7/8" 3/8"
1-1/8" 3/8"
Liquid Line
Connection
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
3/8
TUBING INFORMATION
REFRIGERANT TO ADD AT SPECIFIED
ADDITIONAL LENGTH
20 ft 30 ft 40 ft 50 ft
3 oz 9 oz 15 oz 21 oz
3 oz 9 oz 16 oz 22 oz
3 oz 9 oz 17 oz 23 oz
Line Length
18-AC51D1-10E-EN
60 ft
27 oz
28 oz
29 oz