Air Handler Fan Speed Adjustment

In our psc example we would likely have had to slow the fan speed by 7 15 to give us the ability to get much closer to our target of 350 cfm ton. For peak performance most ac manufacturers suggest that 400 cubic feet per minute cfm per ton of air conditioning should be used meaning that 800 cfm should be moving through the evaporator coil for a 2 ton system and so on. That s largely due to the fact that being able to switch fan speeds on the air handler allows for a greater seasonal energy efficiency ratio seer saving homeowners money on electrical costs.

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Blower fan speed adjustment options fan speeds provided inside the air handler unit may be set or adjusted by the remote control for a wall mounted split system air conditioner or heat pump changing the fan wire connection between the fan on relay and the fan motor selecting a high medium or low speed right on the fan motor itself.

Air handler fan speed adjustment.

Heating off delay s1 the integrated control module provides a selectable heat off. This is for humidify control it ramps up to your normal cooling speed after the time elapses. Some air handlers and furnaces with variable speed motors have a feature that runs the motor at a reduced speed for the first 10 to 15 minutes of the cooling cycle. Switches 3 4 on s5 bank select continuous fan speed 25 50 75 100 these selections are based off of.

Blower speed adjust. What is the recommended speed for your blower. Air speed switches have become the standard on modern hvac systems. Ecm motors typically offer all the same speed adjustments as psc s with the added ability to reduce speed in smaller increments from the low medium low medium high and high settings.

Air handler b6bm b6em b6vm series installation instructions air handler important please read all information in this manual thoroughly and become familiar with the capabilities and use of your appliance before attempting to operate or maintain this unit. This lower blower speed enhances dehumidification of the conditioned air as it passes through the ac coil.