Furnace Limit And Blower Controls - Thermo Pride OD6FA072D48 Installation, Operation And Service Manual

Oil-fired central furnace
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f. Recheck Temperature rise and adjust if needed.
Note: For furnace models with an ECM Blower Motor Refer to ECM Operation
Manual provided with those furnaces for ECM blower speed adjustments.

Furnace Limit and Blower Controls

The predetermined fan and limit locations on all of the Thermo
! WARNING:
Pride oil fired furnaces have been tested and approved by Thermo
Products, LLC. Any attempt to relocate these safety controls or replace
these safety controls with a control that is not approved, or is
incompatible, may result in personal injury, substantial property damage or
death.
Thermo Pride oil furnaces can be equipped with one of the following two boards.
Please refer to Fig. 5 to see which board you have.
Wiring Diagrams and Fan Speed Selection Charts can be found in this manual
under Appendix B .
Refer to the Service section for operational and diagnostic feature of each board.
UT Fan Control Board
NRGmax Fan Control Board
Fig. 5: Fan Control Board
Note: For furnace models with an ECM Blower Motor Refer to ECM Operation
Manual provided with those furnaces for ECM board information.
18

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