Lennox International Inc. WING - Manual (Page 20)

18
To locate the outdoor and the indoor units, refer to the
following information.
L : Distance length between both units.
1 = Refrigerant vapour line.
2 = Liquid aspiration line.
3 4 MODEL 5 2,8
Liquid
Máx.Vertical
Total vertical
+
Horizontal
Tube size
Refrigerant lines sizes
Refrigerant lines sizes L
Max. number of bends
Vapour
15
25
12
15
20
8
15
20
8
15
20
8
3/8"
5/8"(1)
3/8"
3/4"
3/8"(1)
3/4"
1/2"
3/4"
If the height length is greater than 5 meters, a siphon suction must be installed on the suction line every 5 meters
to ensure that oil return to the compressor.
(1) Use the coupling fittings included in indoor unit for refrigerant connection with outdoor unit..
For other positions and longer lengths, consult the Lennox Technical Support Department for application
assistance.
The following data will be obtained from that estimation:
Pipe dimensions, Siphon suction, Insulation, Refrigerant charge
NOTE: THE REFRIGERANT LINES GAS AND LIQUID, MUST BE INSULATED
L
INDOOR UNIT
OUTDOOR U.
2
1
L
INDOOR U.
OUTDOOR U.
L
INDOOR U.
OUTDOOR U.
2
1
1
2
REFRIGERANT CONNECTIONS
DISTANCES BETWEEN UNITS