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3. COIL INSTALLATION
WARNING:
!
Electric furnaces may be connected to
more than one supply circuit.
Upflow Furnace —
1.
Disconnect all electrical power to the fur-
nace.
2.
If needed, use one of the coil case adapter
kits to match the coil to the furnace air
discharge opening. Refer to the Coil Speci-
fications Section for proper kit numbers.
3.
Install the coil and level it as needed to
ensure proper condensate drainage. (See
Figure 2)
4.
Seal the enclosure as required to minimize
air leakage.
5.
Connect the refrigerant lines as outlined in
the Refrigerant Lines section.
Downflow — These coils may be installed in
downflow applications. Installation of the coils
in these applications only require that the fur-
nace and coil cabinets are securely mounted
together before setting in place. Fossil fuel
applications require coil to be placed in the
supply air stream only.
Horizontal — Standard coils may also be
installed in horizontal applications. Installation of
the standard coils in these applications only
Figure 2. Upflow Furnace Application
require that the furnace and coil cabinets are
securely mounted together and that a horizontal
drain pan kit be installed. Refer to the Specifica-
tions Section for proper kit numbers.
To Configure Horizontal Ready Coils for
Horizontal LEFT Installations:
1) Remove the coil access door.
2) IMPORTANT: Remove the plug from one of
the threaded holes in the horizontal drain
pan. Completely remove the webbing lo-
cated in the threaded holes of the horizontal
drain pan. If webbing is not removed, the
drain will not function properly and ceiling
damage may occur.
3) Insert a plug (from the horizontal drain pan)
into the open and unused drain hole in the
drain pan at the bottom of the unit to block
bypass air.
4) Remove the corresponding drain line knock-
out from the coil access door to allow
access to the horizontal drain.
5) Replace the door.
NOTE: Install drainpan extension (supplied) on
C3BH060 models.
To Configure Horizontal Ready Coils for
Horizontal RIGHT Installations:
1) Remove the coil access door. Unscrew the
line-set tube close-off plate from the front
left cabinet rail.
2) Slide the coil and drain pan assembly out of
the unit.
3) IMPORTANT: Remove the plug from one
of the threaded holes in the horizontal drain
pan. Completely remove the webbing lo-
cated in the threaded holes of the drain pan.
If webbing is not removed, the drain will not
function properly and ceiling damage may
occur.
4) Remove the sheet metal hairpin covers (if
supplied) from the back of the coil and
discard.
5) Place the horizontal drain pan on the oppo-
site side of the coil. On units with 2 sets of
knockouts, remove the other set of knock-
outs in the coil spacing plates and insert
support rod.
6) Insert a plug (from the horizontal drain pan)
into the open and unused drain hole in the
drain pan at the bottom of the unit to block
bypass air.
7) Slide the coil and the horizontal drain pan
assembly back into the unit. Reattach the
tube close off plate.
5
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