Delta 21CK018C24 Instruction Manual page 56

If concealed installation is adopted, 1# PVC pipe can be used (Refer to Figure 20).
3、No matter if surface mounting or concealed mounting is selected, it is required to drill 2
holes (in the same level) which distance shall be the same as the distance (60mm) of
installation holes in the bottom plate of the wire controller. Then insert a wood plug into
each hole. Fix the bottom plate of the wire controller to the wall by using the two holes.
Plug the communication line onto the control panel. Lastly install the panel of the wire
controller.
Caution:
1.During the installation of the bottom plate of the wire controller, pay attention to the
direction of the bottom plate. The plate's side with two notches must be at the lower position,
and otherwise the panel of the wire controller cannot be correctly installed.
PVC Pipe
Fig 20 Surface Mounting of Cable
2. The standard communication distance between the main board and the wire controller is 8m.
3. The wire controller shall not be installed in a place where there is water drop or large amount of
water vapor.
H. Connection of Signal Line of Wire Controller
1. Open the cover of the electric box of the indoor unit.
2. Pull the signal cable of the wire controller through the rubber ring.
3. Plug the signal line of the wire controller onto the 4-bit pin socket at the circuit board of the
indoor unit.
4. Use cable fastener to bundle and fix the signal cable of the wire controller.
Fig 21 Concealed mounting of Cable
No.
1
Wall Surface
2
Bottom Plate of Wire Controller
3
Screw M4X10
4
Panel of Wire Controller
55
1
Fig 22 Schematic Diagram of Installation
Name
2 3 4