Microtech Iii Unit Controller With L On W Orks; Communication Module - Daikin MicroTech III Installation And Maintenance Manual

MicroTech III Unit Controller with
l W ® Communication
on orks
Module
For installation and operation information on L
Communication Module and other ancillary control
components, see:
• IM 927 - MicroTech III Water Source Heat Pump
L W

Communication Module .

on orks
• 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 L W communication module that is
on orks
L M 3.4 certified to meet the L
on ark
Comfort Control (SCC) profile for heat pumps. The
controller is microprocessor-based and is designed
to communicate over a L
optional factory or field-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 21: L W Communication Module
on orks
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 .
OM 1149-5
W
on
M Space
on ark
W network . With the
on orks
orks
MicroTech III Unit Controller with L
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)(field-installed)
• Discharge Air Temperature sensor (DAT)(field-
installed)
• Leaving Water Temperature sensor (LWT)
Note: Refer to IM 956-X for details to install (RAT) &
(DAT) sensors.
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
26
M t III u C
ICro eCh nIt ontroller
W
on orks
CAUTION
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