Sample Installation - Mitsubishi Electric CRHV-P600YA-HPB Service Handbook

[ II Restrictions ]

[4] Sample Installation

The system must be configured only by pe rsonnel certified by Mitsubishi Electric.
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" (page 19) and
"System configuration procedures: Individual system" (page 22) 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 19)
and "System configuration procedures: Multiple system" (page 23) for further details.
HWE1312A
MAIN
PCB
SUB
PCB
1
MAIN
PCB
Inter-unit wiring
SUB
(M-NET line)
PCB PCB
MAIN unit SUB unit
MAIN
External
PCB
temperature
sensor
SUB
PCB
Field-supplied dry
contact switch/relay
or remote controller
(PAR-W21MAA)
2 n units
MAIN MAIN
PCB PCB
Inter-unit wiring
SUB SUB
(M-NET line)
PCB
SUB unit(s)
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