This formula can be used to calculate the correct setting for the adjustable heat anticipator:

Ammeter reading = Anticipator Setting.

No. of wire loops

Or in this case,

_2.5 A. = 0.25 A. (Anticipator Setting) 10

4.Adjust the position of the anticipator indicator to match the calculated ammeter setting. If a slightly longer cycle is desired, the pointer should be moved to a higher setting. Slightly shorter cycles can be achieved by moving to a lower setting.

5.Remove the meter jumper wire and reconnect the thermostat. Check the thermostat in the heating mode for proper operation.

If a digital ammeter is used, read the current draw directly from meter. (Steps 1 through 3 are not required.) The meter reading is the correct anticipator setting.

L. Blower Motor Speed Selection:

: Turn off the electrical power to the unit, before attempting to change supply air blower speed wiring.

The furnace comes from the factory with the proper cooling speed selected and the heat rise set to approximately 65°F on mid-fire.

The heat rise is determined by the nozzle size and the switch selection on the control board located in the vestibule compartment.

For ECM systems, switches 1, 2 & 3 of switch block SW1 (the six switch red block) are used to select the proper blower speed. Please refer to (figure 15 and table 18).

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Thermo Products OH6FA072D48N, OH8FA119DV5R, OH8FA119D60R, OH6FA072DV4N, OH6FX072DV4R Blower Motor Speed Selection
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OH8FA119D60B, OH8FA119DV5B, OH6FX072DV4R, OH6FA072DV4N, OH6FA072D48N specifications

Thermo Products has established a reputation for delivering high-quality heating solutions tailored for various applications. Among their standout offerings are the OH8FA119DV5R, OH8FA119D60R, OH6FA072D48B, OH6FA072D48N, and OH6FA072DV4N models. These units are engineered with precision and incorporate advanced technologies to deliver reliable performance in residential and commercial settings.

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