Design Technical Manual


-2: Economizer 2, 3 (Cooling 2 stage output + occupied)
In / Out Mode 3 or 4 (60-03 or 04)
Function
setting
Mode External input External output Remote controller
60-03 3
CNA03 or
CNA04 (E X T.
IN2)
[VRF cooling
ON]
CNB01
(PIN 1-2)
[Cooling
thermostat ON]
CNB01
(PIN 1-3)
[Cooling high /
low output]
CNB01
(PIN 1-4)
[Remote
controller output]
UT Y- RNRU
Occupied/
Unoccupied
status
60-04 4
CNB01
(PIN 1-2)
[Cooling
thermostat ON]
CNB01
(PIN 1-5)
[Cooling high /
low output]
CNB01
(PIN 1-4)
[Remote
controller output]
76°F
80°F
74°F
84°F
68°F
Away
Custom
Auto
Auto
Cool
Heat
Office
Set Temp.
Mode
MenuStatus
Vacation
Fan
Fri 10:00AM
Room Temp.
Cool
Heat
VRF cooling ON
(Economizer input)
Cooling high / low output
(Cooling 2)
Cooling thermostat ON
(Cooling 1)
Wired remote controller
Economizer logic module
Indoor unit
Occupied / Unoccupied status *1
Remote controller output
(Occupied / Unoccupied status)
*1. By the Wired remote controller (Touch panel), external output indication is transferred to Economizer logic mod-
ule through the indoor unit.
● Economizer Logic module is required for Economizer operation.
● Economizer Logic module judges the amount of outdoor air intake depending on indoor unit output at operating
condition, occupied status and outdoor temperature etc.
● Cooling operation by only free cooling is possible.
Operating Mode
Operation
Condition
(Enthalpy or Temp.)
Indoor unit output
Indoor unit
Input
Outdoor air
intake*3
VRF
Indoor unit
Damper
(Free
Cooling)
Outdoor Return
Cooling
Thermostat
ON
Cooling
High/Low*2
Occ/Unocc
(RC output)
VRF
Cooling ON
Mechanical
Cooling Low
Cooling ON OFF High Low ON OFF(Low) ON(Occ) ON Minimum
Mechanical
Cooling High
Cooling ON OFF High Low ON ON(High) ON(Occ) ON Minimum
Free Cooling only
Cooling
OFF
ON Low High ON OFF(Low) ON(Occ) OFF
Modulating
(Min-Max)
Mechanical & Free
Cooling
Cooling ON ON Low High ON ON(High) ON(Occ) ON
Modulating
(Min-Max)
Cooling
Thermostat
OFF or Heating
Cooling
OFF
OFF - - OFF OFF ON(Occ) OFF Minimum
OFF
Cooling
OFF
OFF - - OFF OFF OFF(Unocc) OFF None
*2. Indoor unit decides the cooling high/low based on the set temperature and the indoor temperature.
*3. When external output by remote controller is OFF, the amount of intaken fresh air differs as follows:
- Cooling by intaken fresh air is performed: None to Maximum amount
- Cooling by intaken fresh air is not performed: None
- (08 - 30) -
EXTERNAL INPUT & OUTPUT EXTERNAL INPUT & OUTPUT