Mitsubishi Electronics PUHY-YMC English, c. Transmission booster optional, CONT. board, Power

ENGLISH

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 (ø 27, ø 33, ø 40). Select the mounting plate according to the diameter of the conduit used, and mount as shown in the figure below.

ø

27

mounting

ø

33

plate

ømounting

plate

40

Knock-

out

hole

If conduit is connected

from the bottom

ø

40

mounting

plate

ø

ø

27

33

mounting

mounting

If conduit is connected

plate

plate

from the front

Tapping screw

Unit front

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 ().

1 0 1

Address

CONT. board

Controlbox	Power	Earth screw	Transmission
	terminal block	(E)	cables terminal block
	(TB1)		(TB3)

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)

Earth

T B 1

220V - 240V ~/N

L N

UP

TB 3	B S
	A
2	S
TB	B
	A

Transmission cables terminal block 2 (TB3)

Transmission cables terminal block 1 (TB2)

26