J952V Installation Manual

15
Inducer & Venting Options
To increase installation flexibility, the inducer assembly can be
rotated to 2 different positions (‘B’, ‘C’, & ‘D’ width cabinets
only). Each variation has slightly different requirements with
regard to condensate disposal and, in some cases, the need
to seal the furnace cabinet.
IMPORTANT NOTES
• For ‘A’ width cabinets, the vent pipe can only exit the
cabinet through the top of the cabinet.
• The inducer assembly must never be positioned to
vent downwards on horizontal installs.
Before using
Table 3, the number of pipes (1-pipe or 2-pipe)
connected to the furnace must be known. Find the proper
furnace style (upflow or horizontal) and then the side that
the pipes will exit from the furnace. Finally select the option
that properly matches your installation type from
Figure 32
(page 36)
, Figure 33 (page 37), Figure 34 (page 38) &
Figure 35 (page 39)
.
NOTE: It is important that Direct Vent (2-pipe) systems
maintain an airtight flow path from the air inlet to the flue
gas outlet. The furnace ships from the factory with two holes
in the cabinet for the air inlet and flue gas outlet. In certain
configurations, it is necessary to remove and relocate a
plastic cap in the furnace cabinet. If changing the position
of the air inlet and flue gas outlet, it is required that the
previous hole be closed off with the plastic cap to maintain
air tightness in the furnace. The hole locations are shown
in
Figure 26 (page 27).
Inducer Assembly Rotation
WARNING:
Inducer rotation must be completed before
the furnace is connected to gas and electric. If
both utilities have been connected, follow the
shutdown procedures printed on the furnace
label and disconnect the electrical supply.
CAUTION:
It is good practice to label all wires prior to
disconnection. Wiring errors can cause improper
and dangerous operation.
1. Disconnect the electrical harness from the inducer
assembly.
2. Remove the inducer assembly ground wire from the blower
deck or door.
3. Remove 4 screws securing the inducer assembly to the
header box.
4. Remove drain tube from inline drain assembly.
5. Rotate the inducer assembly to its new position.
6. Secure the inducer assembly to the header box by
reinstalling the four screws.
7. Remove the cabinet plug from side of furnace and reinstall
in hole on opposite side of cabinet.
8. Connect all condensate drains as required for your
installation. See
Table 3 and Figure 32 (page 36), Figure
33 (page 37)
, Figure 34 (page 38) or Figure 35 (page
39)
.
9. Reconnect the electrical harness to the inducer assembly.
10. Reconnect the inducer assembly ground wire to the blower
deck or door.
11. Verify proper operation as detailed on the furnace label.
Pressure Switch Tubing
Figure 13 displays the proper routing of pressure switch tubing
for J952V*U furnaces. All upflow / horizontal furnaces have
two pairs of switches. One set is connected to the static tap
on the inducer assembly and the other to the collector box.
‘A’ WIDTH CABINETS
VENT UPFLOW
HORIZ.
RIGHT
HORIZ.
LEFT
1-Pipe
Options
Right N/A
Option 7
N/A
Up
Option 1
N/A N/A
Left N/A N/A
Option 8
2-pipe
Options
Right N/A
Option 9
N/A
Up
Option 2
N/A N/A
Left N/A N/A
Option 10
B, C, & D, WIDTH CABINETS
VENT UPFLOW
HORIZ.
RIGHT
HORIZ.
LEFT
1-Pipe
Options
Right
Option 3
N/A N/A
Up N/A
Option 11 Option 12
Left
Option 4
N/A N/A
2-pipe
Options
Right
Option 5
N/A N/A
Up N/A
Option 13 Option 14
Left
Option 6
N/A N/A
Table 3. Vent & Inducer Blower Options
AIRFLOW
123
4
567
8
Figure 13. Pressure Switch Tubing for
J952V*U Upflow / Horizontal Furnaces
*Not applicable for ‘A’ Width Cabinets