Discussion
4 PART-SVN251A-EN
Discussion
Electronic component availability has required Trane to obsolete the MOD01421 (1U1 control
module) which includes BRD03015. The following procedure describes the process by which you
can upgrade your 130–400 ton RTAA chiller to the newer clear language display (CLD) control
system, eliminating the need for the obsolete module.
Table 1. KIT16221 contents
Description Quantity Part Number
(a)
(a)Part Numbers may change over time.
Clear Language Display 1 MOD00942
CPM 1U1 1 MOD01424
Bezel with adhesive tape 1 COV02180
Transformer, 120 to 24 Vac 1 TRR00463
Connector, CPM to CLD 2 CON01543
Mounting brackets and hardware 1 KIT16214
Replacement Procedure
WARNING
Live Electrical Components!
During installation, testing, servicing and troubleshooting of this product, it may be necessary
to work with live electrical components. Have a qualified licensed electrician or other
individual who has been properly trained in handling live electrical components perform these
tasks. Failure to follow all electrical safety precautions when exposed to live electrical
components could result in death or serious injury.
1. Stop the chiller if it is running.
a. Open the left control panel door (as you’re facing the control panel).
b. Toggle the Chiller Switch to the Stop/Reset position.
c. Wait for all running compressors to shut down (approximately 20 sec).
2. Record unit configuration settings from menus P1, P2, P3, P4,
and P5.
a.
Use to Table 2 through Table 6 to record the configuration settings if your chiller display and
keypad are
still functional. If you are unable to retrieve the configuration settings from your
chiller and they were not recorded elsewhere, use your unit model number and refer to
Figure 8, p. 22 in RTAA-IOM-3 (Installation,
Operation,
and Maintenance: Air-Cooled Series
®
Rotary Liquid Chillers). For default configuration settings not identified in the unit model
number, refer to p. 94–97 of RTAA-IOM-3.
b. Use the following key sequence to access hidden menus P4 and P5.
i. Press the Set Point
Down button to the left and the up/down display arrows until the
display reads P0.
ii. Press the Set Point
Up button twice.
iii. Press the Set Point
Down button once.
iv. Press the Set Point
Up button twice.
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