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[2-7 Example System with an MA Remote Controller ]
2-7
Example System with an MA Remote Controller
2-7-1
System with One Refrigerant
(1) Sample control wiring
Leave the male
connector on
CN41 as it is.
OS
52
TB3
TB7
M1M2 S
M1M2
(2) Cautions
1) Leave the male connector on the female power supply
switch connector (CN41) on the outdoor unit as it is.
2) It is not necessary to provide grounding to S terminal on
the terminal block for transmission line for centralized
control (TB7).
3) Although two indoor controllers (controller circuit boards)
are equipped inside the P500 models of indoor units, the
board on No.2 side (lower side) is not used. Do not con-
nect wiring to the lower controller circuit board.
BS_02_C
L1
L2
Leave the male
connector on
CN41 as it is.
OC
IC
51
01
TB3
TB7
TB5-1
M1M2 S
M1M2
A1 B1S
TB15
1 2
A B
MA
02
TB5-2
A2 B2 S
*Two indoor controllers (controller circuit boards)
are equipped in the indoor unit (P500).
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Maximum distance (1.25mm
L1+L2
200m [656ft]
2
[AWG16] or larger)
11
chapter 2 -
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