Gree Ultra Heat GMV Multi VRF Series Owner's Manual page 24

Ultra Heat GMV Multi VRF_Heat Recovery Serial
4.3.5.8 Branch selection of downstream indoor unit of mode exchanger ("B1,B2, B3")
R410A refrigerant system
Y-type branch
4.3.5.9 Pipe size between mode exchanger and downstream indoor unit ("b, c, d, g")
Total rated capacity of downstream indoor
units: X (Btu/h)
X≤9500
9500＜X≤17100
17100＜X≤48500
4.3.5.10 Pipe size between indoor branch and indoor unit ("e, f, i, j, k")
Rated capacity of indoor units:
X ((Btu/h)
X≤9500
9500＜X≤17100
17100＜X≤48500
4.3.5.11 Pipe size between indoor branches ("I")
Rated capacity of indoor units:
X ((Btu/h)
X≤9500
9500＜X≤17100
17100＜X≤48500
4.3.6 Connection method when capacity of indoor unit exceeds 48500 Btu/h
When connecting to the indoor unit with capacity of over 48500 Btu/h, it is not allowed to connect
with only one branch; it must use two branches controlled by the same main board for parallel
connection.
Parallel connection
Indoor unit No.1 and No.2
Indoor unit No.3 and No.4
Indoor unit No.5 and No.6
Indoor unit No.7 and No.8
Total rated capacity of downstream indoor units: X(Btu/h)
X≤48500
Gas pipe mm(inch)
Size of connection pipe between indoor branch and indoor unit
Gas pipe mm(inch)
Φ9.52(3/8)
Φ12.7(1/2)
Φ15.9(5/8)
Size of connection pipe between indoor branch and indoor unit
Gas pipe mm(inch)
Φ9.52(3/8)
Φ12.7(1/2)
Φ15.9(5/8)
Indoor unit communication connection
for mode exchanger
"1D1 1D2"
"3D1 3D2"
"5D1 5D2"
"7D1 7D2"
19
Piping size between indoor branches
Φ9.52(3/8)
Φ12.7(1/2)
Φ15.9(5/8)
Parallel connection can be conducted
only as the combination of this table, it
is not allowed to otherwise connect.
Note that after the connection,
manually set the SA2 dial code of
corresponding main board, and dial
the code in the first place to number
end.
Model
FQ01A/A
Liquid pipe mm(inch)
Φ6.35(1/4)
Φ6.35(1/4)
Φ9.52(3/8)
Liquid pipe mm(inch)
Φ6.35(1/4)
Φ6.35(1/4)
Φ9.52(3/8)
Liquid pipe mm(inch)
Φ6.35(1/4)
Φ6.35(1/4)
Φ9.52(3/8)
Remarks