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Daikin MicroTech User Manual

Daikin MicroTech
78 pages
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Operation and Maintenance OM 1280-2
Group: Controls
Part Number: 910276581
Date: January 2020
MicroTech
®
Unit Ventilator Controls
for Daikin Applied Classroom
Unit Ventilators

Table of Contents

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Daikin MicroTech Specifications

General IconGeneral
BrandDaikin
ModelMicroTech
CategoryFan
LanguageEnglish

Summary

Introduction to Daikin Unit Ventilator Controls

Hazardous Information Messages

Cautions and warnings about potential hazards during operation and maintenance.

Entering and Managing Passwords

Entering Password

Step-by-step guide for entering passwords to access features.

Password Levels and LUI Navigation

Password Levels

Explains the different user access levels and their associated passwords.

Clock, Schedules, and Alarm Management

Alarm Management

Procedures for viewing active alarms, history, and clearing alarms.

Description of Unit Operation

State Programming

Explains the UVC's state machine programming for unit operation modes.

Unit Modes and Temperature Control

Discharge Air Temperature Control

How the UVC controls discharge air temperature.

Heating and Cooling Operations

Heating Mode

Details the parameters and operation during heating mode.

Cooling Mode

Details the parameters and operation during cooling mode.

Advanced Heating Operations

Electric Heat Control

How electric heat stages are managed.

Hydronic Valve and Damper Control

Defrost and Limit States

Defrost States

Operation during defrost for Air-Source and Water-Source Heat Pumps.

Emergency Heat Mode

Emergency Heat Mode (Super State)

Overview of the emergency heat super state.

Economizer and DX Cooling

Economizer State

Operation of the economizer in cooling mode.

DX Split System Cooling

Operation and faults related to DX split system cooling.

Special Purpose Modes

Shutdown and Energy Hold Off Modes

Operation and purpose of Shutdown and Energy Hold Off modes.

Unit Mode Priority

Unit Mode Priority

Explains how different modes are prioritized.

Occupancy Modes

Occupancy Modes

Describes the four occupancy modes: Occupied, Standby, Unoccupied, Bypass.

Setpoint Calculation Logic

Effective Setpoint Calculations

Explains how effective setpoints are calculated based on various inputs.

Proportional Integral Control Loops

Proportional Integral (PI) Control Loops

Overview of PI loop control for various functions.

PI Control Parameters Tuning

PI Control Parameters

Details on adjusting PI loop parameters like Proportional Band and Integral Time.

Fan Operation and Control

Indoor Air Fan Operation

How the UVC controls the indoor air fan.

Fan Speed and Damper Control

Adjustable Fan Speeds

Details on 3-Speed Adjustable and Variable Speed Fan operations.

Economizer Strategies

Ventilation and ASHRAE Cycle II

Compressor and Freeze Protection

UVC Inputs and Outputs

External Binary Outputs

UVC Input/Output Table

UVC Configuration Parameters

Diagnostics and Service

Sensor Faults and Failures

Refrigerant and Water Temperature Sensor Failures

Freeze Protection and Low Suction Alarms

System Faults and Configuration Alarms

Troubleshooting Temperature Sensors

Troubleshooting Humidity and CO2 Sensors

Appendix: Local User Interface (LUI) Parameters

Appendix: LUI Parameters (Continued)

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