C
ontrols
IM 1059-12 LARGE VERTICAL WSHP
33 www.DaikinApplied.com
MicroTech
®
III controller
with
l
on
W
orks
®
or BACnet
®
communication module
Each Enfinity Large Horizontal Water Source Heat
Pump can be equipped with a LonWorks or BACnet
communication module. The
L
on
W
orks
module is
L
on
M
ark
3.4 certified and designed to communicate
over a
L
on
W
orks
communications network to a Building
Automation System (BAS). The BACnet module is
designed to communicate over a BACnet MS/TP
communications network to a building automation system.
Both communication modules are microprocessor-based
and can be factory or field-installed.
The communication modules are programmed and
tested with all the logic required to monitor and control
the unit. Optional wall sensors may be used with the
communication modules to provide limited local control of
the Horizontal Water Source Heat Pump. The MicroTech
III 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.
MicroTech III
l
on
W
orks
communication
module
The
L
on
W
orks
communication module is designed
for units that are integrated into a
L
on
W
orks
communication network for centralized scheduling and
management of multiple heat pumps.
MicroTech III BACnet communication
module
Designed to be linked with a centralized building
automation system (BAS) through a BACnet
communications network for centralized scheduling and
management of multiple heat pumps.
MicroTech III controller with
communication modules features
The MicroTech III Controller with
L
on
W
orks
or BACnet
Communication Module orchestrates the following unit
operations:
■
Enable heating and cooling to maintain space
temperature setpoint based on a room sensor setting
■
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
An on-board status LED indicates the status of the
MicroTech III
L
on
W
orks
or BACnet module.
The MicroTech III unit controller with communication
module includes:
■
Return Air Temperature sensor (RAT) (field-installed)
■
Discharge Air Temperature sensor (DAT)
(field-installed)
■
Leaving Water Temperature sensor (LWT) (factory
installed)
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 modules provide network access to
setpoints for operational control
Available wall sensors include:
■
Room sensor
■
Room sensor with LED status and tenant override
button
■
Temperature sensor with LED status, timed-override
button; ±5°F setpoint adjustment
■
Room sensor with LED status, timed-override button,
55° to 95°F setpoint adjustment
■
Room sensor with digital display, timed override button,
occupancy button; ±5°F setpoint adjustment or 55 to
95°F temperature setpoint and dehumidification control
