Wiring Connections In The Control Box - Mitsubishi Electric CITY MULTI PURY-HP-TNU-A Manuel D'installation

10-5. Wiring connections in the control box

Connections must be made securely and without tension on the terminals.
- Improperly connected cables may break, overheat, or cause smoke or fire.
10-5-1. Threading power cable through the knockout hole
・Open the front panel when performing wiring work.
・Punch out the knockout holes at the bottom of the front panel or base with a hammer. Use the appropriate knockout hole according to the size of
the power cable, referring to the table below.
(1) When routing the wiring through the front of the unit
Power cable size (mm )
2
2, 3.5, 5.5
8, 14
21, 26, 33
84, 67, 53
Ⓐ Cable strap
Power cable
Ⓑ
Transmission cable
Ⓒ
The length of the section after the cable access hole must be at least 1100 mm (43 in).
<Notice>
・Do not remove the ground wire that connects Main Box and Inverter Box.
・Install the transmission cable as shown in the figure above so that the cable is long enough for the Main Box to be moved for servicing.
・If there are any gaps around the power cable and transmission cable, please be sure to fill these in with a suitable material to prevent snow from
entering, which may cause damage to the electrical parts, and to protect your hands from direct contact with cables.
・When putting the power cable through the knockout hole without using a conduit tube, deburr the hole and protect the power cable with protective
tape.
・Use a conduit tube to narrow down the opening if there is a possibility of small animals entering the unit.
・When taking the conduit tube out from the bottom part of the unit, caulk around the tube opening to prevent water infiltration.
WT09112X02
Ⓐ
Ⓑ
Ⓒ
Knockout hole to be used
Knockout hole 2
Knockout hole 4
Knockout hole 3
Knockout hole 5
(2) When routing the wiring through the bottom of the unit
Ⓒ
GB-33
Ⓐ
Ⓑ
Fill the gap.