Method Of Using Conduit Mounting Plate; Transmission Booster; Piping Connection - Mitsubishi Electric CITY MULTI PUHY-YMC Installation Manual

2. The control box cover is removed by removing the 2 screws and pull-
ing downward. (The control box with the cover removed is shown in
the figure below.)

3. Method of using conduit mounting plate

The equipment includes conduit mounting plates (ø27, ø33, ø40).
Select the mounting plate according to the diameter of the conduit
used, and mount as shown in the figure below.
If conduit is connected
from the front Tapping screw
c. Transmission booster (optional)
(For details, see item 11.3. "Wiring transmission cables")
Connect 220/230/240 VAC to L/N of power terminal block (TB1).
Connect the ground to the terminal of power terminal block (TB1).
Connect the outdoor unit side transmission cables to A/B of transmission cables terminal block 1 (TB2).
Connect the outdoor unit side shield to S of transmission cables terminal block 1 (TB2).
Connect additional indoor unit side transmission cables to A/B of transmission cables terminal block 2 (TB3).
Connect additional indoor unit side shield to S of transmission cables terminal block 2 (TB3).
Power terminal
block (TB1)
26
If conduit is connected
from the bottom
Unit front
T B 1
Earth

4. Piping connection

Connect indoor unit crossover cables of the transmission cables ter-
minal block (TB3) of the variable capacity unit to the transmission
cables terminal block (TB3). When making an indoor/outdoor con-
nection with shielded wiring, connect the shield ground to the earth
screw ( ).
Controlbox Power
terminal block
(TB1)
UP
Transmission cables
terminal block 2 (TB3)
Transmission cables
terminal block 1 (TB2)
10 1
Address
CONT. board
Earth screw Transmission
(E) cables terminal block
(TB3)