Gree GKH18D3FI, Service Manual

Page: 35 / 191

U-Match Series DC Inverter Service Manual
32
5.3 Installation of Wired Controller
Firstly, the selection and connection way of wired controller‟s signal wire are as below:
(1) Choose suitable signal wire: 2-core signal wire (wire diameter
≥
0.75mm
2
(AWG18), wire
length<30m (98-2/5ft) and the recommended length is 8m (26-1/4ft).
(2) Make sure the power of indoor unit is cut off; fix the signal wire of wired controller on the wiring
board for wired controller of indoor unit with screws; make sure the signal wire is solid.
Then, the detailed installation procedures of wired controller are as shown in Figure 2-5-2:
Figure 2-5-2 Installation of wired controller
Brief instructions of installation procedure:
(1) Pull out the 2-core signal wire in the installation hole of the wall and then let this wire go through
th
e hole at the back of wired controller‟s base plate.
(2) Fix the base plate and installation hole of the wall together with screw M4×25mm (3/16×1inch).
(3) Fix the above mentioned 2-core signal wire on the copper insert X1 and X2 with the equipped
screws of wired controller.
(4)
Fasten the wired controller‟s panel with its base plate together.
5.4 Removal of Wired Controller
Figure 2-5-3 Removal of wired controller