18-AC78D1-6
3
LIFT
When mounting the outdoor unit on a roof, be
sure the roof will support the unit’s weight.
Properly selected isolation is recommended to
prevent sound or vibration transmission to the
building structure.
•
Maximum line length = 100 feet.
•
Maximum vertical length = 60 feet.
•
Compressor crankcase heat is required for line
lengths over 60 feet.
•
Use only the line diameters indicated in Table
5.1.
LIFT
Section 2. Unit Location Considerations
2.1 Unit Dimensions and Weight
2.2 Refrigerant Piping Limits
D
H
W
Unit Dimensions and Weight
Models
H x D x W
Weight*
4TTM3018-036
28-7/8 x 23-1/2 x 25-1/2
154
4TTM3042-060
28-7/8 x 28-1/2 x 29-1/4
168
* Weight values are estimated.
Standard Line
Set 100’ Max
Line Length
60’ Max
Line Lift
60’ Max
Line Lift