68.0<X≤96.0
96<X≤135
135<X
4.2.5.7 Piping size among downstream branches of heat pump mode exchanger "a、h"
Total rated capacity of downsteam
indoor units: X (kW)
5.6<X≤14.2
14.2<X≤20
4.2.5.8 Branch selection of downstream indoor unit of mode exchanger ( "B1、B2" )
R410A refrigerant system
Y-type branch
Piping size between mode exchanger and downstream indoor unit
4.2.5.9
Total rated capacity of downsteam
indoor units: X (kW)
5.6<X≤14.2
14.2<X≤20
4.2.5.10 Piping between indoor branch and indoor unit ( "e、f、i、j" )
Size of connection pipe between indoor branch and indoor unit should be consistent with the
connection pipe of indoor unit.
Piping between indoor branch and indoor unit "e、f、i、j"
Rated capacity of indoor units
C≤2.8
2.8<C≤5.0
5.0<C≤14.0
14.0<C≤16.0
4.2.6 Connecting method for indoor unit with capacity of over 14kw
When connecting to the indoor unit with capacity of over 14kw, it is not allowed to connect with
only one branch; it must use two branches controlled by the same mainboard for parallel connection.
Parallel connection can be conducted as below: branch 1 and branch 2 are connected in parallel,
branch 3 and branch 4 are connected in parallel, branch 5 and branch 6 are connected in parallel,
branch 7 and branch 8 are connected in parallel; it is not allowed to otherwise connect. Note that after
the connection, manually set the SA2 dial code of corresponding mainboard, and dial the code in the
first place to number end.
Φ31.8
Φ38.1
Φ44.5
X≤5.6
Total rated capacity of downsteam
indoor units: X (kW)
X≤5.6
Size of connection pipe between indoor branch and indoor unit
Gas pipe (mm)
Heat Recovery DC Inverter Multi VRF Unit
Φ19.05
Φ19.05
Φ22.2
Size of piping between indoor branches
Gas pipe (mm)
Φ12.7
Φ15.9
Φ19.05
X≤20.0
Piping size between indoor branches
Gas pipe (mm)
Φ12.7
Φ15.9
Φ19.05
Φ9.52
Φ12.7
Φ15.9
Φ19.05
20
Φ28.6
Φ31.8
Φ38.1
Liquid pipe (mm)
Φ6.35
Φ9.52
Φ9.52
Model
FQ01A/A
( " b、c、d、g" )
Liquid pipe (mm)
Φ6.35
Φ9.52
Φ9.52
Liquid pipe (mm)
Φ6.35
Φ6.35
Φ9.52
Φ9.52
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