OM 1280-2 • MICROTECH UNIT CONTROLLER 2 www.DaikinApplied.com
Introduction............................................................................................................................................4
Hazardous Information Messages ........................4
Revision History .......................................4
Acronyms/Abbreviations................................5
Getting Started .........................................................................................................................................6
Local User Interface (LUI) Keypad ........................6
Display Format .......................................6
Using the LUI Keypad .................................6
Keypad Functions..................................... 6
Keypad Navigation ....................................6
Description of Operation ...............................................................................................................................10
State Programming ..................................10
UVC Unit Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
........................................... 11
Night Purge Mode ................................... 11
Fan Only Mode...................................... 11
Auto Mode ......................................... 11
Discharge Air Temperature Control ......................12
Discharge Air Temperature Resets.......................12
Heat Mode (Super State) ...............................14
Heat State (Mechanical Heating) ........................14
Electric Heat Control .................................14
Wet Heat Valve Control ...............................16
Wet Heat Face and Bypass Damper and End-of-Cycle Valve
Control ............................................16
End-Of-Cycle Valve Interlock with Low Outside Air Temperature 17
Defrost State – Air-Source Heat Pump Only .................17
Defrost State – Water Source Heat Pump Only ............. 17
Low Limit State......................................17
Emergency Heat Mode (Super State) .....................18
Full Heat State ......................................18
Cool Mode (Super State) ...............................20
Economizer State ....................................21
Economizer Compressor/Water .........................21
Compressor/Water State ..............................21
DX Split System Cooling ..............................21
Chilled Water Valve Control ............................22
Chilled Water Face and Bypass Damper and End of Cycle Valve
Control ............................................22
Reheat State .......................................23
Reheat/Low Limit State ...............................23
Can’t Cool State .....................................23
Air Tempering Mode ..................................23
................................23
.................24
.... 24
Special Purpose Unit Modes ............................25
Pressurize Mode ....................................25
Depressurize Mode ..................................25
Purge Mode ........................................25
Shutdown Mode .....................................25
................................25
Unit Mode Priority.....................................26
Occupancy Modes ....................................27
Occupied Mode .....................................27
Unoccupied Mode ...................................27
Standby Mode ......................................27
Bypass Mode .......................................27
Additional Occupancy Features .........................29
Network Occupancy Sensor Capability ...................29
Internal Daily Schedule ...............................29
Remote Wall-Mounted Sensor Tenant Override Switch .......29
Remote Wall-Mounted Sensor Status LED ................29
Space Temperature Setpoints ..........................29
Network Setpoint Capability ............................29
.......................29
Network Setpoint Shift Capability ........................30
Network Space Temperature Sensor Capability.............30
Remote Wall-Mounted Sensor with +/–5°F Adjustment (optional) .
30
Remote Wall-Mounted Sensor with 55°F to 95°F Adjustment
(optional) ..........................................30
Control Temperature..................................30
..........................31
Proportional Integral (PI) Control Loops ..................32
PI Control Parameters ................................33
Proportional Band.................................... 33
Integral Time........................................ 33
Indoor Air Fan Operation ...............................34
Auto Mode .........................................34
Manual Fan Mode ...................................34
Occupied, Standby, and Bypass Operation ................34
Unoccupied Operation ................................ 34
Cycle Fan ..........................................34
...........................................34
Fan Control.........................................34
3-Speed Fixed ......................................34
3-Speed Adjustable ..................................35
Variable Speed Fan ..................................35
Outdoor Air Damper Operation ..........................35
Economizer Operation .................................36
Temperature Comparison Economizer (default).............36
Temperature Comparison with OA Enthalpy Setpoint Economizer
(optional) ..........................................36
Temperature Comparison with Enthalpy Comparison Economizer
(optional) ..........................................36
Network Space Humidity Sensor Capability................37
Network Outdoor Humidity Sensor Capability ..............37
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