Actuators for dampers
- Thread starter bdh45
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jtester
Senior Member
- Location
- Las Cruces N.M.
Re: Actuators for dampers
What kind of actuators and dampers are you referring to? Can you describe the installation?
Jim T
What kind of actuators and dampers are you referring to? Can you describe the installation?
Jim T
al hildenbrand
Senior Member
- Location
- Minnesota
- Occupation
- Electrical Contractor, Electrical Consultant, Electrical Engineer
Re: Actuators for dampers
The dampers I've worked on have been line voltage radically geared down little tiny motors that turn an armature 1/4 to 1/2 a revolution. Looks and smells like a motor to me.
Is this damper out of sight of the HVAC shutoff?
The dampers I've worked on have been line voltage radically geared down little tiny motors that turn an armature 1/4 to 1/2 a revolution. Looks and smells like a motor to me.
Is this damper out of sight of the HVAC shutoff?
- Location
- Lockport, IL
- Occupation
- Semi-Retired Electrical Engineer
Re: Actuators for dampers
Won't the damper be hidden by the false ceiling (presuming there is one)? I have seen individual disconnect switches (about the size of a standard light on/off switch, an installed in a 2x4 box) in line with VAV boxes. So I presume it would not be hard to use them in this type of installation. My opinion is that it is needed, for a motor is a motor.
Won't the damper be hidden by the false ceiling (presuming there is one)? I have seen individual disconnect switches (about the size of a standard light on/off switch, an installed in a 2x4 box) in line with VAV boxes. So I presume it would not be hard to use them in this type of installation. My opinion is that it is needed, for a motor is a motor.
- Location
- Massachusetts
Re: Actuators for dampers
IMO that does not change the need for it to be in sight of the motor.
430.102(B)
Yes.
IMO that does not change the need for it to be in sight of the motor.
430.102(B)
Re: Actuators for dampers
I am talking about actuators for commercial hvac dampers. I wonder if they are even considered a motor? I have to research the UL white book and see what they are classified as---a motor or an actuator. Thanks for the help any other comments would be great.
I am talking about actuators for commercial hvac dampers. I wonder if they are even considered a motor? I have to research the UL white book and see what they are classified as---a motor or an actuator. Thanks for the help any other comments would be great.
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