Daikin MicroTech I Operation And Maintenance Manual

OM 1239 3 www.DaikinApplied.com
Introduction
This installation and operation manual covers the
MicroTech
®
III unit controller for Daikin large horizontal
(CCH-CCW) and large vertical (LVC-LVW) Water
Source Heat Pumps. For information on LonWorks
®
or BACnet
®
communication modules and other ancillary
components, see:
■ IM 927 - MicroTech III Water Source Heat Pump
LonWorks Communication Module.
■ IM 928 - MicroTech III Water Source Heat Pump Unit
Controller BACnet MS/TP Communication Module.
■ IM 933 - LonWorks Plug-In Software for use
with MicroTech III Unit Controller - LonWorks
Communication Module.
■ IM 955 - MicroTech III Water Source Heat Pump
Wall-Mounted Room Temperature Sensors.
■ IM 956 - Temperature Sensors for Units with
MicroTech III Unit Controller and LonWorks
Communication Module.
Three unique control choices are offered with the
MicroTech III control system (See Table 1 on page
4).
1. Standalone operation using a MicroTech III
controller and I/O expansion module
2. MicroTech III controller and I/O expansion module
with a LonWorks
®
communication module
3. MicroTech III controller and I/O expansion module
with a BACnet
®
communication module
Each option features direct quick-connect wiring to all
unit-controlled components for “clean” wiring inside the
control box. Each control circuit board receives power
from a 75VA transformer.
There are several basic requirements and features for
both the MicroTech III Unit controller (main board) and
the I/O Expansion Module.
MicroTech III unit controller support
features
• Single Speed Fan On/Off Control
• Pump Request On/Off Control
• Compressor #1 Heating & Cooling On/Off Control
• Reversing Valve #1 On/Off Control
• Compatible with Thermostat or Thermistor Type
Room Sensors
• Short or Long Range Setpoint Adjustment for Room
Sensor Controls
• Occupancy Selection and Emergency Shutdown
Inputs
• Tenant Override Button Input
• Three Stage Thermostat Heating (W1, W2, W3)
• Two Stage Thermostat Cooling (Y1, Y2)
I/O expansion module support features
• Compressor #2 Heating & Cooling On/Off Control
• Reversing Valve #2 On/Off Control
• Choice of one of the following “Secondary Heating”
1. Supplemental Electric Heating
2. Boilerless Electric Heating
• Choice of one of the following “Cooling/
Dehumidication”
1. Active Hot Gas/Reheat (HGR) Dehumidication
2. Hydronic Cooling (Waterside Economizer)
• Humidistat Input
1. Units with HGRH: Humidistat Calls for
Dehumidication
2. Units without HGRH: Humidistat Calls for
Cooling Stage #1
IntroduCtIon

Daikin MicroTech I Specifications

General

Brand	Daikin
Model	MicroTech I
Category	Controller
Language	English