Haier 1U20YEEFRA Installation Manual page 24

1.
1U25S2PJ1FA
1U20YEEFRA
1U25BEEFRA 1U25S2SM1FA
1U25BEFFRA 1U25YEMFRA
1U35BEEFRA 1U35S2SM1FA
1U25BEFFRA-TCS 1U35BEEFRA-TCS
1U25JEJFRA 1U35JEJFRA
1U50JEFFRA 1U50S2SJ2FA
1U50MEE/MFRA 1U68REE/F/MFRA
1U50JEFFRA-TCS
1U71S2SR1FA
2. Connection of pipes
To bend a pipe, give the roundness as large as possible not to crush the pipe ,
and the bending radius should be 30 to 40 mm or longer.
Connecting the pipe of gas side rst makes working easier.
The connection pipe is specialized for R32.
Spanner
Be careful that matters, such as wastes of sand s,water, , etc. shall not enter the pipe.
CAUTION
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 profes sional air conditioner engineer. Before adding additional refrigerant,
perform air purging from the refrigerant pipes and indoor unit using a vacuum pump,then
additional refrigerant.
B
Outdoor unit
Outdoor unit
B
A
21
1U35BEFFRA
1U35MEEFRA
1U35S2PJ1FA
1U35YEMFRA
1U42S2SM1FA
1U50S2PR1FA
1U50REJFRA
Half union
Flare nut
Torque wrench
Outdoor unit
Indoor unit
A
A
Max.Elevation:
In case the elevation A is more
than 5m, oil trap shoud be
installed every 5~7
Max. Length:
Oil trap
M i n. Length: B min
In case the pipe length B is
Indoor unit
more thanDm, the refrigerant
should be charged, according
to E g/m.
9.52
15.88
Forced fastening without careful centering may
damage the threads and cause a leakage of gas.
Pipe Diameter( )
Liquid side6.35mm(1/4")
Liquid/Gas side9.52mm(3/8")
Gas side 12.7mm(1/2")
Gas side 15.88mm(5/8")
1U25BEEFRA
1U35MEEFRA
1U25YEMFRA
1U35YEMFRA
1U20YEEFRA
B
1U25BEFFRA
Indoor unit
1U35BEFFRA
1U25S2PJ1FA
1U35S2PJ1FA
1U25S2SM1FA
1U35S2SM1FA
Amax
1U35BEEFRA
1U25BEFFRA-TCS
1U35BEEFRA-TCS
1U42S2SM1FA
Bmax
1U25JEJFRA
1U35JEJFRA
1U50JEFFRA
1U68REE/F/MFRA
1U71S2SR1FA
1U50S2SJ2FA
1U50JEFFRA-TCS
1U50MEE/MFRA
1U50S2PR1FA
1U50REJFRA
Fastening torque
18N.m
42 N.m
55N.m
60 N.m
charge
Bmin
Amax Bmax C
10
15 3 5
10 15 3 5
10 25 5
3
D E
20
5
20
7
20
7