Making Control Connections - Daikin ARQ Installation And Maintenance Manual

Making Control Connections

MicroTech Unit Mounted DDC Control
®
Components – Models ARQ and GRQ
1 . MicroTech Unit Ventilator Controller (UVC): (Located
Beneath the Local User Interface Panel). Factory mounted
and run tested, microprocessor-based DDC control device
capable of complete Standalone unit control, Client-Server
control or incorporated into a building-wide network using
an optional plug-in communication module. The UVC
contains a microprocessor that is preprogrammed with
the application code required to operate the unit. The
UVC supports up to 16 analog inputs, 8 binary inputs, 4
analog outputs, 2 PWM outputs, and 14 binary outputs.
The controller is field configured. Optional network
communication is provided via plug-in communication
modules that connect directly to the UVC.
2 . On-Board Building Automation: - BACnet (MS/TP)
protocol with a conformance level of 3, allows the UVC to
inter-operate with BACnet Building Automation Systems
(BAS). Meets the requirements of ANSI/ASHRAE 135-
2012 standard for BACnet systems.
• Communication Module (optional): Plug-in L
communication module that attaches to the UVC via an
8-pin header and 4 locking standoffs.
3 . Local User Interface (LUI) (optional): The LUI provides
a unit mounted interface which indicates the current unit
operating state and can be used to adjust the unit ventilator
operating parameters (operating mode, temperature set
points, fan speed and occupancy mode). The LUI has a
4 x 20 OLED display, built in menu structure (pass word
protected), with 4 keys and 2 individual LED indicators, to
adjust the unit ventilator operating param eters. See "Local
User Interface" for further details.
MicroTech sensor and component locations (top view) for AR & GR
www.DaikinApplied.com
4 . External Signal Connection Plugs: (Located beneath
the Local User Interface Panel), three (3) multi-pin plugs
are factory provided and pre-wired with short wire whips
that are capped (they must remain capped if not used).
Provided for field wiring of:
• Remote Wall-Mounted Temperature Sensor: (optional
accessory)
• External Input Signals (by others): unoccupied, remote
shutdown, ventilation lockout, dew point/humidity (night
time operation), or exhaust interlock signals
• External Output Options (by others): lights on/off, fault
indication signal, exhaust fan on/off or auxiliary heat signal.
5 . Motor Speed Transformer: (Located beneath the Local
User Interface Panel). Multi-tap auto-transformer provides
multiple fan motor speed control through the LUI. Used
with an indoor PSC fan motor only.
6 . Unit Main Power "On-Off" Switch (SW1): Disconnects
the main power to the unit for servicing or when the unit is
to be shut down for an extended period of time.
Figure 39: Unit main power "On-Off" switch (SW1)
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on orks
7 . Fuse(s): Fan motor and controls have the hot line(s)
protected by factory installed cartridge type fuse(s).
8 . Control Transformer: 75 VA 24-volt NEC Class 2
transformer for 24 volt power supply. (Located behind the
motor transformer).
23 IM 1083-3