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Local User Interface (LUI)
Figure 82: Local User Interface (LUI)
The optional built-in LUI touch pad with digital OLED display
is located in the right hand compartment below the top right
access door. The 4 x 20 OLED display will provide a variety of
information including:
Operating Mode States
•
Fan functions
•
Room set point temperature
•
Current room temperature
•
Fault codes for quick diagnostics at the unit
The LUI has a built in menu structure (Password protected)
with 4 keys and 2 individual LED indicators to adjust the unit
ventilator operating parameters shown in the following.
Operating Mode States (4)
•
Heat – Heating and economizer operation only
Cool – Cooling and economizer operation only
•
•
Fan Only – Fan operation only
•
Auto – Unit automatically switches between heating,
cooling and economizer operation to satisfy the room load
conditions. The current unit state is also displayed.
Table 39: Wiring Diagram Legend for
Symbol
Description
A1
Actuator- Outdoor Air
A2
Actuator- Face & Bypass
CP1
Motor Compressor 2-Stage
C1
Compressor Contactor
CAP1
Capacitor Run
CEH1-3
Electric Heat Contactor
CO2
Sensor - Indoor Air CO2
DAT
Sensor - Discharge Air Temperature
DCS
Switch - Unit Power
DF
Dead Front Switch
EH1-6
Heater - Electric
EH10
Heater - Outdoor Drain Pan
F1A/F1B
Fuse - Compressor
F2A/F3C
Fuse - Electric Heat
FA/FB
Fuse– Control, Load
FC/FD
Fuse– Control, Transformer
FMI
Motor - Room Fan
FMO
Motor Outdoor Air
Notes:
1.
All electrical installation must be in accordance with national and local electrical codes and job wiring schematic.
2.
External wiring options - see IM for the different configured options, wiring to be minimum 18 gauge, 90°C.
3.
EC motors are factory programmed for specified air flow. Contact Daikin Applied for replacement.
4.
Cap extra wire. Switch wire 42A to red wire for 208V operation.
5.
Switch wire 509 to terminal 2 for 208V operation.
6.
Devices in legend may or may not be on unit.
IM 830-6
Figure 83 on page 47 and Figure 84
Symbol
Description
HP
High Pressure Switch
ICT
Sensor - Indoor DX Coil Temperature
IH
Sensor - Indoor Humidity
MCB
Main Control Board
NTWK
Network Connection
OAT
Sensor - Outdoor Air Temperature
OCT
Sensor - Outdoor DX Coil Temperature
OH
Sensor - Outdoor Humidity
OH1
Thermostat - Overheat
OH2
Thermostat - Overheat
OHM
E.H. Man Reset - Overheat Stat
PL1
LED Occupancy / Fault Status
R1-R3
Relay Electric Heat (Backup)
R10-R12
Relay – Electric Heat
R4H
Relay – Fan High Speed
R4M
Relay– Fan Medium Speed
R4L
Relay– Fan Low Speed
Fan States (4)
•
High (constant speed)
•
Medium (constant speed)
•
Low (constant speed)
•
Auto (part load, variable air) – Varies the fan speed
automatically to meet the room load conditions whether
the unit is in heating, cooling or economizer mode. The
current fan speed is also displayed. During low load
or normal operation (about 60% of the time) the fans
will operate at low speed. When the load increases to
an intermediate demand the fans automatically shift to
medium speed. At near design or design load conditions,
the fans will operate on high speed. A 10-minute delay
between speed changes is incorporated to minimize the
awareness of these changes. The outdoor air damper will
index based on the fan speed to maintain the required
minimum cfm (cubic feet per minute) of ventilation air.
Occupancy Modes (4)
Occupied – Normal, daytime operation where the unit
•
maintains the room set point.
•
Unoccupied – Night set back operating mode in which
the unit responds to a new room set point and cycles to
maintain the condition. The fan comes on when heating
or cooling is needed and runs until the load is satisfied.
The outside air damper is closed during this mode. With
direct expansion (DX) cooling units, when a cooling load
is satisfied by the refrigerant system, the compressor is
de-energized and the Unit Ventilator indoor fan continues
to run for a fixed period of time to remove possible frost
buildup on the evaporator coil.
•
Stand By Mode – The unit ventilator maintains the stand
by mode set point temperature with the outside air damper
closed. The fan runs continuously unless it is configured to
cycle in response to the room load.
•
Bypass Mode – By depressing the Tenant Override Switch
(Item 4) the unit is placed back into the Occupied Mode for a
predetermined time (default of 120 minutes). This time can
be set in 1-minute increments from 1 minute to 240 minutes
through the Unit Ventilator Service Tool or a network.
Symbol
R32
R28
RV
RAT
T6
TB1
TB2
TB3
TBE
TR1
TR3
TR4
TR5
V1
V2
VH
VC
46
Description
Relay - Drain Pan Heater
Relay - Outdoor Motor Air
Reversing Valve
Sensor - Room Air Temperature
Thermostat - Freeze Stat
Terminal Block - 24VAC+
Terminal Block – 24VAC Gnd
(A, B) Terminal Block – Main Power
Terminal Block - Electric Heat
Transformer - Motor Speed
Transformer - 208 / 230V-24V, 75VA
Transformer - 460V–230V
Transformer - 208 / 230V-24V
Valve - Heat EOC (Accessory)
Valve - Cool EOC (Accessory)
Valve - Heat (Accessory)
Valve - Cool (Accessory)
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