York YMUJYH(012-018)BAM-A-X, Installation Manual

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1.
12K
18K
12K
18K
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
A
B
Outdoor unit
Indoor unit
Oil trap
To bend a pipe, give the roundness as large as possible not to crush the pipe ,
ƽ
and the bending radius should be 30 to 40 mm or longer.
Connecting the pipe of gas side
¿
rst makes working easier.
ƽ
The connection pipe is specialized for R410A.
ƽ
Half union
Flare nut
Torque wrench
CAUTION
Be careful that matters, such as wastes of sands,water,, etc. shall not enter the pipe.
The standard pipe length is C m. If it is over D m, the function of the unit will be affected. If the pipe has
to be lengthened, the refrigerant should be charged, according to E g/m. But the charge of refrigerant
must be conducted by professional air conditioner engineer. Before adding additional refrigerant,
perform air purging from the refrigerant pipes and indoor unit using a vacuum pump,then
Spanner
Forced fastening without careful centering may
damage the threads and cause a leakage of gas.
Pipe Diameter( Ǜ ) Fastening torque
Liquid side6.35mm(1/4") 18N.m
Liquid/Gas side9.52mm(3/8") 42 N.m
Gas side 12.7mm(1/2") 55N.m
Gas side 15.88mm(5/8") 60 N.m
Max.Elevation:
Ɣ
In case the elevation A is more
Ɣ
than 5m, oil trap shoud be
installed every 5~7
Max. Length:
Ɣ
In case the pipe length B is
Ɣ
more thanDm, the refrigerant
should be charged, according
to E g/m.
Connection of pipes
charge
additional refrigerant.
Amax
Bmax
2.
1 0