Johnson Controls YVAHP0721CW Series, Service Manual

Page: 49 / 416

SM-16007
1-35
INSTALLATION
(3) When piping length between outdoor units is 6.6 ft (2m) or more, an oil trap for the gas piping should
be installed so that any accumulation of refrigerant oil cannot occur.
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(4) Place the outdoor unit pipe horizontally or with the pipe slanted downward towards the indoor unit side
so that accumulation of refrigerant oil does not occur in the pipe.
(6) Direction of Piping Connection Kit
Place the piping connection kit so it is vertical to the ground (the slope must be 15
o
) as shown
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(5) For servicing, if the pipe is installed in front of the outdoor unit, make sure minimum clearance of
19-11/16 inch (500mm) between the outdoor unit and piping connection kits. (When the compressor is
replaced, minimum clearance of 19-11/16 inch (500mm) is required.)
The refrigerant system may be damaged if the slope of the piping connection kit e15
o
.
NOTICE
Less than 6.6 ft Less than 6.6 ft
Less than 6.6 ft Less than 6.6 ft
6.6 ft or more 6.6 ft or more
Oil Trap
Min. 7-7/8 inch Oil Trap
Min. 7-7/8 inch
Refrigerant oil accumulates in the pipe.
Indoor Unit Side Indoor Unit Side
Indoor Unit Side Indoor Unit Side
Piping
Connection Kit Piping
Connection Kit
Outdoor Unit
Min.
19-11/16 inch
Outdoor Unit Outdoor Unit
15 o