Sample Installation - Mitsubishi Electric CAHV-R450YA-HPB Service Manual

[ II Restrictions ]

[4] Sample Installation

(1) Individual system
*Each unit is operated individually by connecting a dry contact switch/relay to each unit.
Field-supplied dry
contact switch/relay
or remote controller
(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
HWE22020
PCB
Sub box
(TB3)
PCB
Sub box
(TB3)
MAIN unit
Inter-unit wiring
(M-NET line)
External
PCB
temperature
(TB3)
sensor
Field-supplied dry
contact switch/relay
or remote controller
PCB
(TB3)
SUB unit
Inter-unit wiring
(M-NET line)
- 27 -
External
Sub box
temperature
sensor
PCB
(TB3)
SUB unit(s)
"n"th unit
GB