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All installations and services must be performed by qualified service personnel.
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Anticipators for the heating operation are of two types, pre-set and adjustable. Those that are pre-set will not have an
adjustment scale and are generally marked accordingly.
4. BLOWER MOTOR SPEED WIRING
Figure 21
: TURN OFF THE ELECTRICAL POWER to the furnace before attempting to change blower
speed wiring.
A. The furnace is factory wired to the ignition control with standard heating and cooling speeds.
When changing motor speeds, simply switch the needed speed to either the heating or cooling terminal
as applicable on the module to obtain the desired CFM. The unused speeds should then be reconnected
to the module in the “park” positions.
B. The optional blower delay switches on the W/R integrated control (figure 21) are used to determine the
length of the heat delay-to-fan-on and delay –to-fan-off periods. The following tables show the time
periods that will result from the various switch positions.