1U09BS2ERA
1U12BS2ERA
1U18FS2ERA
1.
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
andthebendingradiusshouldbe30to40
mm or longer.
Connecting the pipe of gas side first makes working easier.
ƽ
TheconnectionpipeisspecializedforR410A.ƽ
Half union
Flare nut
Torque wrench
CAUTION
Be careful that matters, such as wastes of sand
s,water,
,etc.shallnotenterthepipe.
ThestandardpipelengthisC m.IfitisoverDm,thefunctionoftheunitwillbeaffected.Ifthepipe
has
to be lengthened, the refrigerant should be charged,
according to E g/m. But the charge of refrigerant
must
be conducted by profes
sional 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(ǿ) 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:
●
In case the elevation A is more
●
than 5m, oil trap shoud be
installed every 5~7
Max. Length:
●
Incasethepipelength B is●
more thanDm, the refrigerant
shouldbecharged,according
to E g/m.
Connection of pipes
charge
additional refrigerant.
Amax
Bmax
2.
Installation
74
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