Control Wiring Connections - Trane CVHE Installation Instructions Manual

Figure 23. Factory provided conduit holes in AFDH
control box
1. Hinged side of AFDH control box enclosure
2. 1.13-inch cutout for 0.75-inch conduit
3. 0.88-inch cutout for 0.50-inch conduit
AFDH-SVN02D-EN

Control Wiring Connections

(UCP2 Model AFDH Only)
Figure 24. UCP2 wiring connections to 2X1 terminal
strip in AFDH control box
1. Factory installed wiring
2. Field installed wiring
3. Note: Actual wire designators may vary depending upon the
specific model/version of chiller control that the AFDH drive is
being linked with. Please refer to the original chiller control wiring
diagrams and the wire descriptions listed in Figure Callouts 4–11
if an actual wire designator does not match the one shown in this
graphic.
4. 115 Vac feed to chiller control panel
5. Neutral feed to chiller control panel
6. Normally Closed terminal(2) on HPC (High Pressure Cutout) switch
(3S1)
7. 115 Vac feed from breaker 1CB1 in the chiller control panel
8. From 1TB1-7 (oil pump interlock 2K1)
9. From 1TB1-8 (oil pump interlock 2K1)
10. and 11. From IPC communication buss link
Important: Do not forget to install the condenser
pressure transducer provided in the UCP2
Miscellaneous Hardware Package. The
accurate pressure readings required by the
chiller controls to enable the most efficient
operation of the chiller with the retrofitted
AFDH drive can only be effectively
measured with a pressure transducer.
Installation
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