Mitsubishi Electric CITY MULTI PQRY-P250 Installationshandbuch Seite 24

B. Example of a group operation system with multiple heat source units (Shielding wires and address setting are necessary.)
OC
CN40
(51)
TB3
M1 M2
M1 M2 S
D
OC
(52)
TB3
M1 M2
M1 M2 S
A Group 1
B Group 3
C Group 5
D Shielded Wire
E Sub Remote Controller
( ) Address
a. Always use shielded wire when making connections between the heat source unit (OC) and the indoor unit (IC), as well for all OC-OC, and
IC-IC wiring intervals.
b. Use feed wiring to connect terminals M1 and M2 and the ground terminal on the transmission cable terminal block (TB3) of each heat source
unit (OC) to terminals M1, M2 and terminal S on the transmission cable block of the indoor unit (IC).
c. Connect terminals M1 and M2 on the transmission cable terminal block of the indoor unit (IC) that has the most recent address within the
same group to the terminal block (TB6) on the remote controller (RC).
d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the heat source unit (OC).
e. On one heat source unit only, change the jumper connector on the control panel from CN41 to CN40.
f. If the jumper connector was changed to CN40 in step e, connect terminal S on the central control terminal block (TB7) of the heat source unit
(OC) to the ground screw
g. Set the address setting switch as follows.
* To set the heat source unit address to 100, the heat source address setting switch must be set to 50.
Unit
IC (Main)
IC (Sub)
Heat Source Unit
BC controller
Main Remote Controller
Sub Remote Controller
h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical power has been
turned on.
24
L L
1 2
BC
(53)
M1 M2 S
TB7
L L
6 7
BC
(54)
M1 M2 S
TB7
in the electrical component box.
Range
01 to 50 Use the most recent address within the same group of indoor units.
Use an address, other than that of the IC (Main) from among the units within the same group of
01 to 50
indoor units. This must be in sequence with the IC (Main).
51 to 100 Use the most recent address of all the indoor units plus 50.
51 to 100 Heat source unit address plus 1. Make sure that each heat source unit and BC controller is set
to a different withiin the specified range.
101 to 150 Set at an IC (Main) address within the same group plus 100.
151 to 200 Set at an IC (Main) address within the same group plus 150.
L L
3 4
A B
IC IC
(01) (04)
TB5 TB5
M1 M2 S M1 M2 S
TB6
(101)
RC
L L
8 9
IC
IC
(03)
(02)
TB5
TB5
M1 M2 S M1 M2 S
TB6
(103)
RC
Setting Method
L
5
C
IC IC
(05) (06)
TB5 TB5
M1 M2 S M1 M2 S
r
3
TB6 TB6
(105) (155)
RC RC
E
IC
(07)
TB5
M1 M2 S