First Co UC-HW (without installed pump) User Manual
Page 6
****** WARNING ******
If secondary drain is not being used it must be
plugged to prevent leakage which will cause
structrual and equipment damage.
For front drain applications cut as shown and
remove metal tab to allow drain piping to slope
away from the drain pan properly. Ensure that the
drain piping has proper slope and is able to drain.
THERMOSTATIC EXPANSION VALVE INSTALLATION
FRONT DRAIN APPLICATIONS
Figure 5
Figure 6
Install expansion valves as shown with directional arrow
toward the coil. Attach the TXV bulb to the vertical suc-
tion line as shown with the tubing on top. External equal-
izer is to be attached to the 1/4" fl are connector. Ensure
that a service valve core is not installed before attaching
the equalizer line. Wrap the bulb with insulation tape to
completly seal the bulb from ambient air.
Cut along dashed lines to
slot and remove