Nortek GHH09(2.6)LUK4DH - Optional Wired Controller Functions; Wired Controller Display and Icons

34
Pipe expanding method
Note:
Improper pipe expanding is the main cause of refrigerant leakage. Please expand
the pipe according to the following steps:
A: Cut the pipe
the distance of indoor unit and
outdoor unit.
Ɣ&XWWKHUHTXLUHGSLSHZLWKSLSHFXWWHr.
pipe
pipe cutter
leaning uneven burr
B: Remove the burrs
Ɣ5HPRYHWKHEXUUVZLWKGHEXUULQJWRRO
and prevent the burrs from getting into
the pipe.
downwards
pipe
deburring tool
C: Put on suitable insulating pipe
D: Put on the union nut
Ɣ5HPRYHWKHXQLRQQXWRQWKHLQGRRU
connection pipe and outdoor valve;
install the union nut on the pipe.
union pipe
pipe
E: Expand the port
Ɣ([SDQGWKHSRUWZLWKH[SDQGHr.
Note:
Ɣ$LVGLfferent according to the
diameter, please refer to the table
below:
expander
hard
mold
pipe
F: Inspection
Ɣ&KHFNWKHTXDOLW\RIH[SDQGLQJSRUW
,IWKHUHLVDQ\EOHPLVKH[SDQGWKH
port again according to the steps
above.
WKHOHQJWKLVHTXDO
improper expanding
leaning
damaged
surface
crack uneven
thickness
smooth surface
Outer diameter
(mm)
A(mm/in)
Max Min
ĭ
ĭ
ĭ
ĭ
 
 
 
 
