Carrier 59MN7B Installation, Start-Up, Operating And Service And Maintenance Instructions page 11

collector box for proper condensate drainage. See the bottom
images in Fig. 10 and 11.
A field- -supplied, accessory Horizontal Installation kit (trap
grommet) is required for all direct- -vent horizontal installations
(only). The kit contains a rubber casing grommet designed to seal
between the furnace casing and the condensate trap. See Fig. 17.
NOTICE
The field- -supplied, accessory horizontal drain trap grommet is
ONLY REQUIRED FOR DIRECT VENT APPLICATIONS.
It it NOT required for applications using single- -pipe or
ventilated combustion air venting.
NOTICE
The condensate trap extends below the side of the casing in
the horizontal position. A minimum of 2- -in. (51 mm) of
clearance is required between the casing side and the furnace
platform for the trap to extend out of the casing in the
horizontal position. Allow at least 1/4- -in. per foot (20 mm
per meter) of slope down.
Collector Box
Plugs
Condensate Trap
Relief Port
Fig. 8 - - Upflow Trap Configuration
(Appearance May Vary)
To Relocate the Condensate Trap:
S Remove the knockout in the casing for the condensate trap.
S Install the grommet in the casing when required for direct- -vent
horizontal applications.
S Orient the furnace in the desired position.
S Allow for 2 in. (51 mm) of clearance underneath the furnace for
the condensate trap and drain line.
S Fig. 10 shows the condensate trap and tubing before and after
relocation in the horizontal right position.
S Fig. 11 shows the condensate trap and tubing before and after
relocation in the horizontal left position.
S Refer to the appropriate figure to begin the trap conversion.
S Refer to Condensate Drain section for information how to
install the condensate drain.
Vent Pipe Clamp
Pressure Switch
Port
11
Vent Elbow Clamp
Vent Elbow
Collector Box
Plug
Condensate Trap
Relief Port
Condensate Trap
Outlet
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