Sample System Connection - Mitsubishi Electric PQHY-P72ZLMU-A Service Handbook

[ II Restrictions ]
8-step demand control (When SW6-8 is set to ON on two heat source units)
Demand capacity is shown below.
8-step demand
No.1 CN3D
*1. The heat source units whose SW6-8 is set to ON are designated as No. 1and No. 2 in the order of address from small to
large.
Ex) When heat source units whose SW6-8 is set to ON are designated as OC and OS1, OC=No. 1 and OS1=No. 2.

[4] Sample System Connection

Examples of typical system connection are shown on pages [5] to [7].
Refer to the Installation Manual that came with each device or controller for details.
(1) An example of a system to which an MA remote controller is connected
System
configuration
System with one heat
1
source unit
System with one heat
2
source unit
Grouping of units in a
3 system with multiple
heat source units
System with one heat
4
source unit
System with one heat
5
source unit
System with one heat
6
source unit
(2) An example of a system to which an ME remote controller is connected
System
configuration
System with one heat
1
source unit
(3) An example of a system to which both MA remote controller and ME remote controller are connected
System
configuration
System with one heat
1
source unit
MA remote controller and ME remote controller cannot both be connected to the same group.
HWE15150
1-2P
1-2P 1-3P
Open Open
Short-circuit
Short-circuit Open
Short-circuit
Connection to the system controller
NO
NO
NO
With connection to transmission line
for centralized control
With connection to indoor-heat
source transmission line
With connection to transmission line
for centralized control
Connection to the system controller
With connection to transmission line
for centralized control
Connection to the system controller
With connection to transmission
line for centralized control
No.2 CN3D
Open
Open Short-circuit
100% 50%
50% 0%
88% 38%
75% 25%
Address start up for indoor
and heat source units
Automatic
address setup
Manual
address setup
Manual
address setup
Manual
address setup
Manual
address setup
Manual
address setup
Address start up for indoor
and heat source units
Manual
address setup
Address start up for indoor
and heat source units
Manual
address setup
- 27 -
Short-circuit
Open Short-circuit
88% 75%
38% 25%
75% 63%
63% 50%
Notes
Connection of
multiple LOSS-
NAY units
Connection of
multiple LOSS-
NAY units
Notes
Notes
GB