Mitsubishi Electric PQHY-P200YLM-A Service Handbook page 63

[ II Restrictions ]
2. A system in which a system controller is connected to the centralized control transmission line <PQRY>
(1) Sample control wiring
Leave the male
connector on
CN41 as it is.
SW5-1 OFF ON
OS
52
TB3
M1M2
TB7
M1M2 S
Leave the male
connector on
CN41 as it is.
SW5-1 OFF ON
OS
56
TB3
M1M2
TB7
M1M2 S
(2) Cautions
1) ME remote controller and MA remote controller cannot both be
connected to the same group of indoor units.
2) No more than 3 ME remote controllers can be connected to a
group of indoor units.
3) Do not connect the terminal blocks (TB5) on the indoor units that
are connected to different heat source units with each other.
4) Replace the power jumper connector of the control board from
CN41 to CN40 on only one of the heat source units (not required
if power to the transmission line for centralized control is sup-
plied from a controller with a power supply function, such as GB-
50ADA).
5) Provide an electrical path to ground for the S terminal on the ter-
minal block for centralized control on only one of the heat source
units.
6) When the number of the connected indoor units is as shown in
the table below, one or more transmission boosters (sold sepa-
rately) are required.
To connect two transmission boosters, connect them in parallel.
(Observe the maximum number of connectable indoor units that
are listed in the specifications for each heat source unit.)
When the P200 and P250 mod-
els are not included in the con-
nected indoor units
When the P200 or P250 model is
included in the connected indoor
units
HWE15060
L11
Move the male connector
from CN41 to CN40.
SW5-1 OFF ON
OC BC
51 53
TB3 TB02
M1M2 M1M2 S
TB7
M1 M2S
To be left
unconnected
To be connected
L21
Leave the male
connector on
CN41 as it is.
SW5-1 OFF ON
OC BC
55 57
TB3 TB02
M1M2 M1M2 S
TB7
To be left
M1M2 S
unconnected
To be left
unconnected
Note1
System controller
A B S
*1 When only the LM adapter is connected, leave SW5-1 to OFF (as it is).
*2 LM adapters require the power supply capacity of single-phase AC 208 - 230V.
Number of transmission booster
(sold separately) required
1 unit 2 units 3 units
15 - 34 35 - 50
units units
11 - 26 27 - 42 43 - 50
units units units
L12
Group Group
IC IC
01 02
TB5 TB15 TB5
M1M2 S 1 2 M1M2 S
A1 B2 A1 B2
101 102
RC RC
L22
Group
IC IC
04 05
TB5 TB5 TB15
TB15
M1M2 M1M2
S 1 2 S
A1 B2 A1 B2
154 104
RC RC
The left table shows the number of transmission boosters that
is required by the system with three BC controllers. For each BC
controller that is subtracted from the above-mentioned system,
two additional indoor units can be connected.
Refer to the DATABOOK for further information about how
many booster units are required for a given system.
7) When a power supply unit is connected to the transmission line
for centralized control, leave the power jumper connector on
CN41 as it is (factory setting).
(3) Maximum allowable length
1) Indoor-heat source transmission line
Same as [5] 8.
2) Transmission line for centralized control
Same as [5] 9.
3) ME remote controller wiring
Maximum overall line length
(0.3 to 1.25mm
m1 10m [32ft]
m2+m3 10m [32ft]
If the standard-supplied cable must be extended, use a cable
with a diameter of 1.25mm
that exceeds 10m [32ft] must be included in the maximum in-
door-heat source transmission line distance described in (1).
When connected to the terminal block on the Simple remote
controller, use cables that meet the following cable size specifi-
cations: 0.75 - 1.25 mm
4) Maximum line distance via heat source unit
2
(1.25 mm
-
Same as [5] 9.
- 54 -
Interlock operation with the ventilation unit
Group
LC
IC
03 07
TB15 TB5 TB15 TB5
1 2 M1M2 S 1 2 M1M2 S
A1 B2
103
RC
Group
LC
IC
06 08
TB5
TB5 TB15
M1M2 M1M2
1 2 S 1 2 S
A1 B2
106
RC
2
[AWG22 to 16])
2
[AWG16]. The section of the cable
2
[AWG18-16].
[AWG16] or large)
GB