System Configuration - Mitsubishi Electric CAHV-P500YB-HPB Service Handbook

[ II Restrictions ]
II Restrictions

[1] System Configuration

Schematic Diagrams of Individual and Multiple Systems
(1) Individual system
*Each unit is operated individually by connecting a dry contact switch/relay to each unit.
External
temperature
sensor
Field-supplied dry
contact switch/relay
or remote controller
(PAR-W21MAA)
Refer to the sections "Switch Types and the Factory Settings" (page 18) and
"System configuration procedures: Individual system" (page 21) for further details.
(2) Multiple system (2-16 units)
*A group of unit that consists of one main unit and up to 15 sub units is operated collectively by connecting an external water temperature sensor and a
dry contact switch/relay to the main unit.
External
temperature
sensor
Field-supplied dry
contact switch/relay
or remote controller
(PAR-W21MAA)
Refer to the sections "Switch Types and the Factory Settings" (page 18)
and "System configuration procedures: Multiple system" (page 22) for further details.
HWE15070
Unit (MAIN circuit) Unit (SUB circuit)
PCB PCB
Unit (MAIN circuit) Unit (SUB circuit)
PCB PCB
MAIN unit
Inter-unit wiring
(M-NET line)
Unit (MAIN circuit)
External
PCB
temperature
sensor
Field-supplied dry
contact switch/relay
or remote controller
(PAR-W21MAA)
Unit (MAIN circuit) Unit (SUB circuit)
PCB PCB
SUB unit
Inter-unit wiring
(M-NET line)
- 13 -
Unit (SUB circuit)
PCB
Unit (MAIN circuit) Unit (SUB circuit)
PCB PCB
SUB unit(s)
n units
GB