Gree NCHS1B(U) - Installation and Test for Drainage Hose; Precaustions for the Installation of Drainage Hose

GMV5 HR Heat Recovery Cooling and Heating Mode Exchanger
23
Connecting method is as shown in the picture:
Fig. 4.32
4.2.7.4 Branch selection of indoor unit of mode exchanger (“C1”)
R410A refrigerant system
capacity of downsteam indoor
units: X /Btu/h
Model
Y-type branch
48500
＜
X
≤
96000
FQ01B/A
4.2.7.5 Piping size between mode exchanger and downstream indoor unit (“m”)
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 “m”
Rated capacity of indoor units:c
/Btu/h
Size of connection pipe between indoor branch and indoor unit
Gas pipe /mm(in.)
Liquid pipe /mm(in.)
48500
＜
c
≤
72000
Φ19.05(3/4)
Φ9.52(3/8)
72000
＜
c
≤
96000
Φ22.2(7/8)
Φ9.52(3/8)
4.3 Installation and Test for Drainage Hose
4.3.1 Precaustions for the Installation of Drainage Hose
(1) As for the drainage hose, the shorter the better. The drainage hose should be kept 1%
～
2% at
least gradient for draining out the condensate water .
(2) The side of drainage hose must be bigger than or equal to the size of drainage piping.
(3) Install the drainage hose according to below fig and then perform thermal insulation for it.
Incorrect installation may lead to leakage and then moisten indoor furniture and other objects.
(4) Purchase the normal hard PVC pipe at local market as for the drainage pipeline. Insert the end
part of PVC pipe into the drainage hole, and then tighten it with drainage hose and tieline. Do not
use adhesive glue to connect drainage hole and drainage hose.
(5) When the pipeline is used for multiple units, the position for the commoon pipelie should be
lower than the drain outlet of every unit 100m (3937in.). In this case, thick pipes should be
adopted.