Microtech 2300 - Table of Contents

MICROTECH 2300 UNIT CONTROLLERDAIKIN APPLIED
2
TABLE OF CONTENTS
Safety Information ............................3
Hazard Identication ..........................3
Safety Considerations .........................3
Introduction..................................3
Connections and Terminals ....................4
Unit Controller and Control Modules I/O Descriptions 4
MT2300 Unit Controller & MT2310 I/O Board
Connections ................................5
Replacing Unit Controller ......................6
Conguration DIP Switches ....................6
Functionality .................................8
Operating Modes.............................8
Safety Inputs (HPS, LPS, SLTS, COS) ............8
Control Outputs .............................9
LED Indicators...............................9
Sequence Of Operation . . . . . . . . . . . . . . . . . . . . . . . 10
Unit Status.................................12
Remote Shutdown...........................12
Thermostat Inputs (G, Y1, Y2, W1, W2, W3, and W4) 1 2
Fault Modes.................................14
Brownout ..................................14
High / Low Pressure Faults (HP/LP) .............14
Low Suction Temperature Fault Heating ..........14
Low Suction Temperature Fault Cooling /
Dehumidication ............................15
Condensate Overow ........................15
Fan Operation During Most Modes, Faults and
Shutdowns ................................15
Faults and Modes ...........................16
Troubleshooting .............................18
MT2300 Unit Controller LED Faults .............18
Troubleshooting the Water Source Heat Pump Unit 20
Start-Up ....................................21
Operation...................................21
Thermostat Inputs ...........................21
Electric Heat Controls ........................22
Supplemental Electric Heat Control .............22
Boilerless Heat Control .......................22
Heating Source Selection .....................23
Hydronic Heat ..............................23
Fan Speed Selection .........................24
Unit Options ................................25
Waterside Economizer .......................25
Dehumidication ............................26
Simplied Dehumidication ....................26
Hot Gas Reheat Smart Dehumidication .........26
Humidistat Controlled Dehumidication ..........29
Dehumidication Only ........................30
Analog Humidity Sensor Input..................30
Controls....................................31
MT2300 Controller with an Optional BACnet®
Communication Module ......................31
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