Carrier 40VU007-054H-7S-QEE Installation And Owner's Manual page 19

Installation
8.Refrigerant pipe
Piping Permissible Length & Height Difference
Please refer to the attached manual of outdoor units.
Piping Materials & Heat Insulating Materials
So as to prevent condensation, heat insulating
treatment should be performed. The heat insulating
treatment for gas and liquid piping should be carried
out respectively.
exhaust fan
example of bad installation
Piping Material
Heat Insulating
Material
12
Hard PVC tube
VP31.5mm (inner bore)
Vesicant polythene
thickness: over 7mm