Daikin MicroTech III Operation And Maintenance Manual

OM 1239 25 www.DaikinApplied.com
Appendix B
MicroTech III unit controller with
lonWorks® communication module
For installation and operation information on LonWorks
Communication Module and other ancillary control
components, see:
• IM 927 - MicroTech III Water Source Heat Pump
LonWorks Communication Module.
• IM 933 - LonMaker Integration Plug-in Tool: For use
with the MicroTech III Unit Controller.
• IM 955 - MicroTech III Wall Sensor for use with
MicroTech III Unit Controller
Each Daikin water source heat pump can be equipped
with a LonWorks communication module that is
LonMark 3.4 certied to meet the LonMark Space
Comfort Control (SCC) prole for heat pumps. The
controller is microprocessor-based and is designed
to communicate over a LonWorks network. With the
optional factory or eld-installed communication module.
The unit controller is programmed and tested with all the
logic required to monitor and control the unit. An optional
wall sensor may be used with the communication
module to provide limited local control of the Water
Source Heat Pump. The unit controller monitors water
and air temperatures and passes information to the
communication module. The module communicates with
the BAS to provide network control of the Water Source
Heat Pump.
Figure 14: LonWorks communication module
The MicroTech III unit controller with communication
module includes a unit-mounted return air, discharge air
and leaving water temperature sensor. Wall mounted
temperature sensors include setpoint adjustment
and tenant override. The user has the capability of
substituting the wall sensor with a duct-mounted return
air sensor.
MicroTech III Unit Controller with LonWorks
Communication Module orchestrates the following unit
operations:
• Enable heating and cooling to maintain setpoint
based on a room sensor
• Enable fan and compressor operation
• Monitors all equipment protection controls
• Monitors room and discharge air temperatures
• Monitors leaving water temperature
• Relays status of all vital unit functions
The MicroTech III unit controller with
an optional communication module
includes:
• Return Air Temperature sensor (RAT)(eld-installed)
• Discharge Air Temperature sensor (DAT)(eld-
installed)
• Leaving Water Temperature sensor (LWT)
Note: Refer to IM 956-X for details to install (RAT) &
(DAT) sensors.
CAUTION
When an optional wall-mounted room temperature sensor is
connected to the unit controller, the Return Air Temperature (RAT)
sensor must not be installed. A wall-mounted room temperature
sensor and the return air temperature sensor must not be
connected simultaneously or the unit will not operate properly.
The communication module provides access to setpoints
for operational control
Available wall sensors include:
• Room sensor with LED status and tenant override
button
• Room sensor with LED status, tenant override
button, and ±5°F setpoint adjustment
• Room sensor with LED status, tenant override
button, 55° to 95°F setpoint adjustment
MICroteCh III unIt Controller

Daikin MicroTech III Specifications

General

Brand	Daikin
Model	MicroTech III
Category	Controller
Language	English