Mitsubishi Electric QAHV-N560YA-HPB, Service Handbook

Page: 36 / 176

[
II
Restrictions ]
- 29 -
HWE1517A GB
(4) System configuration procedures : Multiple system
1. Set the dip switches and rotary switches.
(Switches on the main unit* AND on all sub units)
System configuration diagram
Setting the switches on the main unit
Set the dip switch SW2-9 to ON. (multiple unit control) (labeled A in the figure
at right)
Refer to “Factory Switch Settings (Dip switch settings table)” (page 85) for
further details.
Make sure the address of the main unit is set to "1" (labeled B in the figure at
right).
Setting the switches on all sub units
(1) Set the dip switch SW2-9 to ON. (multiple unit control) (labeled A in the figure
at right)
(2) Set the addresses with the rotary switches. (labeled B in the figure at right).
Set the 10's digit with SWU1, and set the 1's digit with SWU2. Assign
sequential addresses on all sub units starting with 2.
(3) Set the dip switch SW2-6 to OFF. (power supply to communication circuit)
External
water
temperature
sensor
Field-supplied dry contact
switch/relay or remote
controller (PAR-W31MAA) or
centralized controller (AE-200)
SW2-9: ON
Address: 1
SW2-6: OFF
SW2-9: ON
Address: 2 SW2-6: OFF
SW2-9: ON
Address: 1 + n
Inter-unit wiring
(M-NET line)
* The main unit is the unit to which an external water temperature sensor is connected.
Main unit Sub unit
"n"th unit
Unit (MAIN circuit)
PCB
Unit (MAIN circuit)
PCB
Sub unit
Unit (MAIN circuit)
PCB
A B
ON
1
23
456
7
89
1
0
ON
1
23
456
7
89
1
0
ON
1
23
456
7
89
1
0
10’s digit (0) 1’s digit (1) (0)
ON
1 2 3 4 5 6 7 8 9 10
The figure at left shows that the switches 1 through 5 are set to ON and 6 through 10 are set to OFF.
A B
ON
1
23
456
7
89
1
0
ON
1
23
456
7
89
1
0
ON
1
23
456
7
89
1
0
10’s digit (0) 1’s digit (1) (0)
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