EarthLinked CCA Series, Installation Manual

Page: 11 / 26

CCA-410-IM (03/15) Page 11
TXV Kit Introduction
CCA Series cased coils that are intended for HEAT ONLY application are ready to install and make the
refrigeration line set connection to the cased coil as shipped.
CCA Series cased coils that are intended for HEAT/COOL or COOL ONLY applications, are shipped
with the matching TXV Kit that must be field installed to enable operation of the system in the
cool mode.
The following procedure is for the installation of the TXV Kit which must be done prior to making the line
set connections to the cased coil.
Figure 7 illustrates the TXV Kit as shipped with the external parts for field installation identified. The TXV
(thermal expansion valve), CAV (cooling assist valve) and interconnecting tubing are located inside the
control box to ensure performance.
Figure 7. TXV Control