York YHKJXH012BAM--FX, Service Manual

Page: 76 / 161

Air Duct
1. Installation of air sending duct
This unit uses rounded duct, the diameter of the duct
is 180mm.
The rounded duct needs to add a transition duct to
connect with the air-sending duct of indoor unit, then
connect with respective separator. As Figure shown,
all the fan speed of any of the separator's air outlet
shall be adjusted approximately the same to meet
the requirement for the room air conditioner.
Indoor unit
Soft connection
or static box
Transition duct Rounded duct
Air distributary
Tie-in of air
distributary
2. Installation of air return duct
Use rivet to connect the air return duct on the air
return inlet of the indoor unit, then connect the other
end with the air return blind as Figure shown.
3.Thermal insulation of duct
Air-sending duct and air return duct shall be thermally
insulated. First stick the gluey nail on the duct, then
attach the heat preservation cotton with a layer of
tinfoil paper and use the gluey nail cap to fix. Finally
use the tinfoil adhesive tape to seal the connected
part. As Figure shown.
Indoor unit
rivet
Air return duct Air return blind
gluey nail gluey nail cap
adhesive tape
tinfoil heat preservation cotton
The sketch map of long duct
Air distributary
Air return duct
Air return blind
Suspending hook
Drain pipe
Transition duct
Air out duct
Tie-in of air
distributary
M8 wide expansion bolt
M8 suspender screw
M8 wide lock washer
M8 screw nut
Air conditioner
Note:
When connecting the short ducts, use the low static terminals, which color is white.
The distance L from the air outlet of the duct to the air outlet of the air conditioner shall be no more than 0.5 m.
When connecting the long ducts, use the middle static terminals, which color is red.
The distance L from the air outlet of the duct to the air outlet of the air conditioner shall be no more than 2.0 m.
0.5m (use white motor plug)
2.0m (use red motor plug)
Ceiling
Air supply
A
Building roof of installation
Return air
Return air box
Unit
There should
be no obstacles
within 1m
Unit
Return air
Return air box
Air outlet grille
Air supply
Installation Procedure
76