All installations and services must be performed by qualified service personnel.
8.As a final step in the installation, the appliance must be adjusted to deliver a temperature rise within the range of 50° to 80°F. Adjust the blower motor speed to obtain a temperature rise within the acceptable range. The required blower speed will depend on the airflow resistance of a supply and return air duct systems.
I.Air Filters
1.Filter Installation
This OPB unit has been factory supplied with a high quality,
2.Use of
: 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 for minimum sizing guidelines for selecting filter for the unit.
Table 4: Minimum Required Filter Area (in square inches)
| Maximum | Model Number | ||
Filter Type | Air Velocity | |||
| (ft/min) | OPB24 | OPB30 | OPB36 |
*Thermo Products |
|
|
|
|
Supplied | 600 | 192 | 240 | 288 |
Permanent |
|
|
|
|
Standard | 500 | 230 | 288 | 346 |
Permanent |
|
|
|
|
Disposable | 300 | 384 | 480 | 576 |
∗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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