Installation; Installation And Mounting; Field Installation Kit; Installing A New Communication Module - Daikin MicroTech II Installation And Maintenance Manual

Installation and Mounting

The following section describes how to field install a new
BACnet MS/TP communication module or replace an existing
module on the MicroTech II chiller unit controller.
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 communication module, you need to touch a grounded object, such as
the metal enclosure, in order to discharge the electrostatic potential from
your body.
Electric shock hazard. Can cause personal injury or
equipment damage.
This equipment must be properly grounded. Only personnel knowledgeable
in the operation of the equipment being controlled must perform connections
and service to the unit controller.

Field Installation Kit

The communication module field-installed kit ships with the
following items:
Current Hardware:
• The BACnet MS/TP communication module circuit board
and plastic cover
• EIA-485 plug-in network connector (attached to module)
• This Manual (IM 906)
Previous Hardware:
• The BACnet MS/TP communication module circuit board
and plastic cover
• EIA-485 plug-in network connector (attached to module)
• Three jumpers (attached to inside cover of module)
• Ferrite-lined plastic enclosure (for noise reduction, if
needed)
• This Manual (IM 906)

Installing a new Communication Module

Follow these steps to install a new communication module on
the unit controller.
1. Remove power from the unit controller.
Figure 8: Serial Card Slot Connection
IM 906-4 • MICROTECH II CHILLER UNIT CONTROLLER
CAUTION
WARNING
2. Locate the serial card slot on the controller
Figure 6: Serial Card Slot in Unit Controller
3. Remove the existing cover from the serial card slot if it
has not already been removed. Use a small screwdriver
to carefully pry the cover off from one end
Figure 7: Remove Serial Card Slot Cover
4. Grasp the communication module, with the network
connector on the underside. The 8-pin header must
mate to the 8-pin plug in the unit controller. The plug has
a guide on each end to direct it into the mating guide
on the communication module header.
the serial card slot with the 8-pin plug that mates to the
header on the communication module.
8

Installation

Installation
(Figure 6).
(Figure 7).
Figure 8 shows
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