Carrier XCT 7 40VD072H-7S-QEE, Installation And Owner'S Manual

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11
Pipe Length & Height Difference
Installation of Air Return & Air Exhaust Pipes
Please refer to the attached manual of outdoor units.
Tubing Materials & Specifications
Special tools for R410A should be used for cutting and enlarging pipes.
Model
40VD072H-7S-QEE
40VD096H-7S-QEE
Tubing Size(mm)
Gas pipe Ø22.22
Liquid pipe Ø12.7
Tubing Material Seamless copper pipe rated for R410A refrigerant
For the choice and installation of air return port, air return pipe, air exhaust port and exhaust pipe, please consult service
personnel of Carrier. Refer the design chart and exterior static pressure to choose the exhaust pipe with appropriate
length and shapes.
main unit of air conditioner
ceiling surface
special exhaust port
(purchased at local shop)
exhaust pipe (purchased at local shop)
air return pipe
(purchased at local
shop)
inspection hole
special air return pipe (purchased
at local shop) with air cleaner
• The difference in length between pipes should be limited to less than 2:1;
• Make the piping as short as possible;
• Use as few elbows as possible;
• Wind the heat insulating material around the flange between the main unit and the exhaust pipe for heat insulation and
sealing. Install the piping before installing it on the ceiling.
incorrect incorrect correct
Installation Procedures