Installation; Contents Of The Microtech Iii Remote User Interface Kit; Installing The Microtech Iii Remote User Interface - McQuay MicroTech III Installation And Maintenance Manual

Installation

The following section describes how to mount the remote user interface and connect it to one or more
MicroTech III unit controllers.

Contents of the MicroTech III Remote User Interface Kit

The following is the list of items included in the field-installed kit:
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Electric shock hazard. Can cause personal injury or equipment damage.
This equipment must be properly grounded. Connections and service to the MicroTech
III Unit Controller must be performed only by personnel knowledgeable in the operation
of the equipment being controlled.

Installing the MicroTech III Remote User Interface

1. Remove plastic cover (see Figure 4).
2. Mount the Remote User Interface. The remote user interface can be either panel mounted or wall
mounted (see Figure 5 for terminal connections for each of the mounting locations).
3. Connect the Remote User Interface to the MicroTech III unit controller. This can be done one of two
different ways:
4. Cycle power to the unit(s) once the wiring of the remote user interface is complete.
Note:
8
Electrostatic discharge hazard. Can cause equipment damage.
This equipment contains sensitive electronic components that may be damaged
by electrostatic discharge from your hands. Before you handle a communications
module, you need to touch a grounded object, such as the metal enclosure, in
order to discharge the electrostatic potential in your body.
The remote user interface plastic enclosure with 2 pin terminal connector (CE+ - CE-)
IM 1005 installation manual
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Direct connection to a single unit controller with an RS-485 direct connection. See Figure 7 for the
connector location and Figure 8 for the pin-out description for the RS-485 connection. Note that
wiring requires a separate 24-Volt power supply.
•
Daisy-chain connection to as many as eight units using a twisted pair wire connected to the CE +
and CE – pins (see Figure 2 and Figure 6 for wiring details).
Downloading and communication using the twisted pair may be slower than for the RS-485 direct
connection.
CAUTION
!
WARNING
!
IM 1005