Hazardous Information Messages; Features; Specifications - Daikin MicroTech II Installation And Maintenance Manual

Hazardous Information Messages

Recognize Safety Symbols, Words and Labels
The following symbols and labels are used throughout this
manual to indicate immediate or potential hazards. It is the
owner and installer's responsibility to read and comply with
all safety information and instructions accompanying these
symbols. Failure to heed safety information increases the
risk of property damage and/or product damage, serious
personal injury or death. Improper installation, operation and
maintenance can void the warranty.
Cautions indicate potentially hazardous situations, which can result in
personal injury or equipment damage if not avoided.
Static sensitive components. Can cause equipment damage.
Discharge any static electrical charge by touching the bare metal inside the
control panel before performing any service work. Never unplug cables,
circuit board terminal blocks, or power plugs while power is applied to the
panel
Warnings indicate potentially hazardous situations, which can result in
property damage, severe personal injury, or death if not avoided.
Dangers indicate a hazardous situation which will result in death or
serious injury if not avoided. Electric shock hazard. Can cause personal
injury or equipment damage. This equipment must be properly grounded.
Connections and service to the MicroTech II Unit Controller must be
performed only by personnel knowledgeable in the operation of the
equipment being controlled.
This equipment generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with this instruction manual,
may cause interference to radio communications. It has been tested and
found to comply with the limits for a Class A digital device, pursuant to
part 15 of the FCC rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a
commercial environment. Operation of this equipment in a residential area
is likely to cause harmful interference in which case the user will be required
to correct the interference at his or her own expense. Daikin disclaims any
liability resulting from any interference or for the correction thereof.
IM 906-4 • MICROTECH II CHILLER UNIT CONTROLLER
CAUTION
WARNING
DANGER
NOTICE
The BACnet communication module connects the
MicroTech II chiller unit controller to a building automation
system (BAS). This interface enables the exchange of
BACnet objects between the unit controller and the network.
The BACnet communication module, together with the unit
controller, support the BACnet MS/TP (EIA 485) data link layer
(physical layer).

Features

• Integration into a building automation and control system
via BACnet MS/TP (B-AAC profile)
• Simple insertion of the circuit board module into a
MicroTech II chiller unit controller
• Several options for setting network parameters via the
BACnet Configuration Tool user interface, unit controller,
or BAS
• LEDs that indicate communication status and network
activity
• BACnet application pre-installed and ready for custom
configuration

Specifications

The following section provides a summary of technical data
and conformance to agency listings.
General
Dimensions 2 3/8" x 1 3/16" (60 x 30 mm)
Operating
Temperature 14 - 140°F (-10 - 60°C)
Humidity 80% RH
Storage and Transportation
Temperature -4 - 158°F (-20 - 70°C)
Humidity 80% RH
Electrical
Power 8-38 VDC (+5% /–5%) bus connector, max. 1W
RS-485 (EIA-485)
Network cable
3-wire twisted pair, shielded AWG 20-22, max 3281
ft 888 (1000 m)
Galvanic isolation
Bus connection/
A+, B-, GND (3 wires)
Transceiver
1/8 Unit load
120 Ω end of line resistor for units at start or end of
Bus termination
trunk
Data transmission
9600, 19200, 38400 (default) 76800 bps
(baud rate)
Additional Components
Plug-in network
EIA-485 connection plug
connector
Jumpers (3)
BACnet Configuration
Free download on
Tool software
Agency Listings - Unit Controller
US UL 873
Canada CSA C22.2 No. 24-93
NOTE: In this manual, RS-485 and EIA-485 are used
synonymously.
4
Introduction
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