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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
furnace.
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 Specifications
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 furnace
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 require that the furnace and coil cabinets
are securely mounted together and that a
horizontal drain pan kit be installed. Refer to the
Specifications 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 located
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
knockout from the coil access door to allow
access to the horizontal drain.
5) Replace the door.
NOTE:
Install drainpan extension (supplied) on
the following models:
C5BH-*60
C4BH-X36
C5BH-*49
C4BH-X48
C4BH-X60
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 located
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
opposite side of the coil. On units with 2
sets of knockouts, remove the other set of
knockouts 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.
Figure 2. Upflow Furnace Application
