System Configuration; Schematic Diagrams Of Individual And Multiple Systems; Multiple System (2-16 Units) - Mitsubishi Electric CAHV-P500YA-HPB Service Handbook

[ II Restrictions ]
II Restrictions

[1] System Configuration

<1> 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" on the next page and
"System configuration procedures: Individual system" (page 20) 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" on the next page
and "System configuration procedures: Multiple system" (page 21) for further details.
HWE10060
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