Grouped Operation Of Units In Separate Refrigerant Circuits - Mitsubishi Electric PURY-M200YNW-A1 Service Handbook

[2-7 Example System with an MA Remote Controller ]
2-7-3

Grouped Operation of Units in Separate Refrigerant Circuits

(1) Sample control wiring
Move the male connector
from CN41 to CN40.
SW5-1 OFF
Leave the male
connector on
CN41 as it is.
SW5-1 OFF
(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 2 MA 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 outdoor units with each other.
4) Replacement of male power jumper connector (CN41) must
be performed only on one of the outdoor units.
5) Provide grounding to S terminal on the terminal block for
transmission line for centralized control (TB7) on only one of
the outdoor units.
6) When the number of the connected indoor units is as shown
in the table below, one or more transmission boosters (sold
separately) are required.
To connect two transmission boosters, connect them in par-
allel. (Observe the maximum number of connectable indoor
units that are listed in the specifications for each outdoor
unit.)
When the W/WP/WL200 and
W/WP/WL250 models are not includ-
ed in the connected indoor units
When the W/WP/WL200 and
W/WP/WL250 models are included in
the connected indoor units
BS_02_L
Group
OC HB
51 52
TB5
TB3 TB3
M1 M2
M1 M2 M1 M2 S
TB7
M1 M2 S
To be connected
OC HB
55 56
TB5
TB3 TB3
M1 M2
M1 M2 M1 M2 S
TB7
M1 M2 S
To be left
unconnected
Number of transmission boost-
er (sold separately) required
1 unit 2 units
25 - 50 units -
19 - 37 units 38 - 50 units
L12
Group
IC IC
01 03
TB15 TB5 TB15
S M1 M2 S
1 2 1 2
A1 B2 A1 B2
MA MA
L22
Group
IC IC
02 04
TB5 TB15
TB15
S M1 M2 S
1 2 1 2
A1 B2
MA
The left table shows the number of transmission boost-
ers that is required by the system with four HBCs. For
each HBC added or subtracted, subtract or add two in-
door units.
Refer to the DATABOOK for further information about
how many booster units are required for a given system.
(3) Maximum allowable length
1) Indoor/outdoor transmission line
Maximum distance (1.25mm
L12 200m [656ft]
L22 200m [656ft]
The maximum piping length between OC and HB is 150
m.
2) Transmission line for centralized control
L31 200m [656ft]
3) MA remote controller wiring
Same as 2-7-1
4) Maximum line distance via outdoor unit
2
(1.25mm [AWG16] or larger)
L12+L31+L22 1000 m [3280ft] (500 m [1640ft])
*1 If a given system includes one or more unit or remote
controller that does not support the maximum allow-
able cable distance of 1000 m [3280 ft], the maximum
allowable cable distance in the system will be 500 m
[1640 ft]. Refer to the latest catalog for information on
which units and remote controllers support the maxi-
mum allowable cable distance of 1000 m [3280 ft].
Interlock operation with
the ventilation unit
Group
LC
IC
06 07
TB5 TB15 TB5
M1 M2 S
M1 M2 S 1 2
A1 B2
MA
IC
05
TB5 TB15
M1 M2 S
1 2
m5
2
[AWG16] or larger)
chapter 2 -
*1
15