Armstrong Air BCE7E Series, Installation Instructions Manual

Page: 6 / 19

507838-01 Issue 1813 Page 6 of 19
When removing the coil, there is possible danger of
equipment damage and personal injury. Be careful
when removing the coil assembly from a unit installed
in right- or left-hand applications. The coil may tip into
the drain pan once it is clear of the cabinet. Support the
coil when removing it.
IMPORTANT
Horizontal Left-Hand Discharge Application
NOTE: For horizontal applications, a secondary drain pan
is recommended. Refer to local codes.
90º
BEND
CABINET
SUPPORT
COIL SHOWN IN UPFLOW POSITION FOR EASY CONVERSION
TOP CAP SCREWS
DRAIN PAN
REINSTALLED
HERE
DRIP
SHIELD
DRAIN PAN
SHIPPING
LOCATION
TOP CAP ROTATED TO
CORRECT POSITION
———— DRAIN PLUGS ————
REINSTALLED HERE REMOVED FROM HERE
BACK COIL END SEAL
TOP
CAP
90º
BEND
ALIGN HOLES WITH
HOLES IN COIL END
PLATE. STARTING WITH
THE ROUND HOLES ON
THIS END.
Figure 4. Field Modification for Left-Hand Discharge
Use the following procedures to configure the unit for
horizontal left-hand discharge operations:
1. Before operating the unit, remove access panels
and the horizontal drip shield (-060 model) and the
corrugated padding between the blower and coil
assembly. Discard the corrugated padding.
2. Pull the coil assembly from unit. Pull off the horizontal
drain pan.
3. Remove the drain plugs from back drain holes on
horizontal drain pan and reinstall them on front holes.
After removal of drain pan plug(s), check drain hole(s)
to verify that drain opening is fully open and free of any
debris. Also check to make sure that no debris has
fallen into the drain pan during installation that may plug
up the drain opening.
IMPORTANT
4. Rotate drain pan 180º front-to-back and install it on the
opposite side of the coil.
5. Remove screws from top cap. Remove horizontal drip
shield screw located in the center of the back coil end
seal as illustrated in Figure 4.
6. Rotate horizontal drip shield 180º front-to-back.
7. Remove plastic plug from left hole on coil front end seal
and reinstall plug in back hole. Reinstall horizontal drip
shield screw in front coil end seal. Drip shield should
drain downward into horizontal drain pan inside coil.
HORIZONTAL DRIP SHIELD (-060 MODEL)
DOWN-FLOW RAIL FRONT EDGE OF HORIZONTAL
DRAIN PAN
Figure 5. Left-Hand Discharge Configuration
8. Rotate top cap 180º front-to-back and align with
unused screw holes. Holes must align with front and
back coil end plates. The top cap has a 45º bend on
one side and a 90º bend on the other. The 90º bend
must be on the same side as the horizontal drain pan
as illustrated in Figure 4.
NOTE: Be very careful when reinstalling the screws
into the coil end plate engaging holes. Misaligned
screws may damage the coil.
9. From the upflow position, flip cabinet 90º to the left
and set into place. Replace blower assembly. Secure
coil in place by bending down the tab on the cabinet
support rail as illustrated in Figure 4 and Figure 5.
10. Install the horizontal shield (-060 model only) on the
front edge of the horizontal drain pan as illustrated in
Figure 5.
NOTE: For horizontal applications in high humidity
areas, remove the downflow rail closest to the drain
pan. To remove rail, remove screw from rail at back
of unit and at cabinet support rail. Remove downflow
rail then replace screws. Also, seal around the exiting
drain pipe, liquid and suction lines to prevent infiltration
of humid air.