It uses a 40 amp electric relay and electric fan sensor.
Dual cooling fan relay wiring diagram.
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For example dual thermostat switches or dual relays could be used to control each fan separately.
Wiring dual cooling fans.
There are several ways that a dual fan can be wired.
You could use one relay.
Or a single relay could be used to control both fans.
The cooling fan wiring diagram below is what we ve found to be the simplest and most reliable method.
With dual cooling fans there are two methods for wiring up the relay kit.
Electric fan relay wiring diagram wiring diagram is a simplified tolerable pictorial representation of an electrical circuit it shows the components of the circuit as simplified shapes and the capability and signal contacts between the devices.
Primary cooling fan dual fans with dual relays single speed on off using ground switched devices only for primary activation using dual relays for two fans is not required.
However two relays will divide the load.
And if a relay fails you will still have one fan running.
Cooling fan relay wiring diagram how to wire a fan relay hvac in dual fan relay wiring diagram image size 730 x 656 px and to view image details please click the image.