Field Replacement And Support - Daikin IM 735-4 Installation And Maintenance Manual

Field Replacement and Support

There are two versions of the LonWorks communication
module. The version depends on the model of MicroTech II unit
controller (pCO2 or pCO3) installed on the chiller.
Daikin Applied no longer offers the pCO2 version of the chiller
unit controller or the pCO2 LonWorks communication module.
The pCO2 LonWorks communication module has
been obsoleted and replaced by the pCO3 LonWorks
communication module. The pCO3 LonWorks communication
module is not backward compatible with the pCO2 chiller unit
controller. This means:
1. If a new LonWorks communication module needs
to be installed on a pCO2 unit controller, both the unit
controller and the LonWorks communication module
need to be upgraded to the newer pCO3 version.
2. If an existing LonWorks communication module needs
to be replaced on a pCO2 unit controller, both the unit
controller and the LonWorks communication module
need to be upgraded to the newer pCO3 version.
3. To add or replace a LonWorks communication
module on a pCO3 unit controller, order just the pCO3
communication module. It is not necessary to upgrade
the pCO3 unit controller if it is functioning properly.
Use the following figures to determine which pCO version of
MicroTech II unit controller is installed on the chiller.
shows that the pCO2 unit controllers have DIP switches
located above the keypad display, while the pCO3 controllers
do not have DIP switches (Figure
for Daikin Applied part numbers. Note that the previous
LonWorks communication module field kit numbers have
been replaced with a single pCO3 kit number.
Figure 13: pCO2 Chiller Unit Controller
DIP Switches
www.DaikinApplied.com
Figure 13
14). Refer to Table 3
Figure 14: pCO3 Chiller Unit Controller
Table 3: Replacement Parts List
Description
MicroTech II LonWorks Communication Module
kit - pCO3
Kit includes: LonWorks communication module,
network connector, ferrite enclosure, and IM 735
MicroTech II LonWorks Communication Module
kit - pCO2
Contact the Daikin Applied Aftermarket group for chiller unit
controller part numbers and ordering information. To find
your local parts office, visit
800-37PARTS (800-377-2787).
13 IM 735-4 • MICROTECH II CHILLER UNIT CONTROLLER
Parts and Service
No DIP Switches
Part Number
332608501 (replaces
former PN 350147409)
332608501 (replaces
former PN 350147401)
www.DaikinApplied.com or call