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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 (1) from the inducer
assembly (2). See Figure 25.
2.
Remove the inducer assembly ground wire (3) from
the blower deck (4).
3.
Remove
three
screws
(5) securing
the inducer
assembly (2) to the header box (6).
4.
Rotate the inducer assembly (2) to its new position.
5.
Reinstall the three screws (5) removed in step 3. If the
inducer assembly is rotated to the left or right side of
the furnace, use the extra 4th screw provided in the
parts package.
6.
Remove the cabinet plug from side of furnace and
reinstall in hole on opposite side of cabinet.
7.
Reconnect the electrical harness (1) to the inducer
assembly (2).
8.
Reconnect the inducer assembly ground wire (3) to
the blower deck (4) or door.
i
Direct Vent (2=Pipe) Applications
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. Measurements
for hole locations on *RC and *RL series furnaces are
shown in Figure 39 (page 37).
Vent and Inducer Assembly Options
To increase installation flexibility, the inducer assembly can
be rotated up to 3 different positions. Each variation has
slightly different requirements with regard to condensate
disposal and, in some cases, the need to seal the furnace
cabinet.
1. Priortovent installation, determinethe numberof pipes
to be connected to the furnace (1 -pipe or 2-pipe), the
airflow of the furnace (upflow or downflow), and then
the side that the pipes will exit from the furnace.
2. Select the option from Table 5 that properly matches
your installation type and then find your setup (by
Option number) in Figures 42 - 43 (pages 45 - 46).
liiiiiilH/l
Vent
Up
Right
Left
Vent
Up
Right
Left
Upflow
Option 1
Option 2*
Option 3*
Upflow
Option 4
Option 5*
Option 6*
Downflow
Option 7
Option 8*
Option 9*
Downflow
Option 10
Option 11"
Option 12"
Table 5. Vent and Inducer Blower Options
Accessories
The components
in Figures 26 - 29 (pages 21 - 22)
are included in the extra parts bag that is supplied with
the purchase of M4RC/M4RL furnaces. Depending on
your particular installation, some of these components
are optional and may not be used. Please refer to the
descriptions and accompanying figures when installing
these items.
2O
Figure 25. Inducer Assembly Rotation
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