Thermo Products OD6FA072DV5B E. Air Filters, Maximum, Filter Type, Air Velocity, Model Number

E. Air Filters

Filter Installation

The OD6 comes with (2) two 18-3/4” x 12-3/4” reusable filters. A “W” style filter rack is shipped with the furnace for placement of the filters inside the return air plenum. Access to the filters is through the removable blower door. For horizontal installations, it is recommended that return air grill filters be installed for homeowner access.

19.125"

3.000"

Fig. 10: A typical filter rack and dimensions for the OD6 furnace.

: Failure to comply with minimum filter installation requirements may affect the performance and/or void the warranty on this unit.

If a method other than Thermo Pride filter racks is selected for retention of the filter and/or use of a different filter type is desired, refer to Table 4 below for minimum sizing guidelines for selecting filter for the unit.

	Maximum
Filter Type	Air Velocity	Model Number
	(ft/min)	OD6
*Thermo Products	600	475 in²
Supplied Permanent		(2 filters @ 238in² each)
Standard	500	576 in²
Permanent		(2 filters @ 288in² each)
Disposable	300	960 in²
		(2 filters @ 480in² each)

Table 4: Minimum Required Filter Area (in square inches)

*The Thermo Products supplied filter can be cut to size to fit other filter retention systems as long as the minimum size requirement is met.

NOTICE: Any internal stiffeners used in the filter must not be removed, although they can be cut to size as needed.

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