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WIRING
High-Static Ducted B8 Chassis
Table 23: B8 Unit Wiring Diagram Legend.
Terminal
CN-POWER
CN-MOTOR1
CN-MOTOR2
CN-VM
CN-WF
CN-FLOAT
CN-ZONE
CN-EEV
CN-OPTION
CN-EXT
CN-DISPLAY
CN-CC
CN-PTC
CN-REMO
CN-PIPE/OUT
CN-LEAK
CN-PIPE/IN
CN-ROOM
CN-D/PUMP
CN-485
Table 24: B8 Unit DIP Switch Settings.
DIP Switch Setting
SW3
GROUP CONTROL
DRY CONTACT
SW4
MODE
SW5
CONTINUOUS FAN
*For Gen 4 Multi V ducted indoor units, DIP Switches 1, 2, 6 through 8 must be set to OFF. These DIP switches are used for
other models.
**To enable Generation 4 features, outdoor unit DIP Switch No. 3 must be set to ON. Please refer to the Multi V 5, Multi V Water
IV, Multi V S Engineering Manuals for additional information.
66
Purpose
AC Power supply
Fan motor output
Fan motor output
Sub PCB to Main PCB power supply
Float switch input
Zone controller
EEV Output
Optional PCB EPROM
External on / off controller
Dry contact
Auxiliary heater
Wired remote controller
Discharge pipe sensor
Leak detector
Suction pipe sensor
Room sensor
Drain pump output
Communication
Off
On
Main
Sub
Variable
Auto
Off
On
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Wi-Fi
Display
Group control setting using 7-Day Programmable Controller; selects Main /
Sub on each indoor unit
Sets operation mode for optional Dry Contact accessory
1. Variable: Auto or Manual Mode can be set through 7-Day Programmable
Controller or Wireless Remote Controller (factory default setting is Auto if
there is no setting)
2. Auto: For Dry Contact, it is always Auto mode
Selects continuous fan for ducted indoor units.
1. On: Indoor unit fan will always operate at a set fan speed, except when
the system is off, or the outdoor unit is in defrost mode (when the outdoor
unit is in defrost mode, the fan will operate at super low fan speed)
2. Off: Indoor unit fan speed can be changed by on / off
Function
AC Power line
Motor output of BLDC
Motor output of BLDC
Power supply connection
Wi-Fi module connection
Float switch sensing
Zone controller connection
EEV control output
Option PCB connection
External on / off Controller connection
Display of indoor status
Dry Contact connection
Connection for Auxiliary Heater
Wired remote control connection
Pipe out thermistor
Leak detector connection
Pipe in thermistor
Room air thermistor
AC output for drain pump
Connection between indoor and outdoor units
Remarks
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