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Honeywell 3way Normally Open Zone Valves

 
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Old 12-18-2010, 10:46 AM   #1
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Honeywell 3way Normally Open Zone Valves


I am a Maintenance Director for a nursing home and we have the above honeywell zone valves. My question is can someone explaing how each port is to be hooked up to the system. This particular valve has a 208 volt coil and is normally open. which port is supposed to be the supply and return etc. thank you
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Old 12-18-2010, 02:50 PM   #2
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Re: Honeywell 3way Normally Open Zone Valves


That depends on its application.

So what are you using the valves for.

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Old 12-18-2010, 04:59 PM   #3
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Re: Honeywell 3way Normally Open Zone Valves


With a 3-way valve, one side will always be open to the common port while the other side is closed.
On those smaller Honeywell valves, arenít the individual ports marked with A, B and AB?
Port AB is common and port A or B will be open or closed to it, depending on the position of the diverter.
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Old 12-19-2010, 07:26 AM   #4
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Re: Honeywell 3way Normally Open Zone Valves


thank you
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Old 12-19-2010, 07:31 AM   #5
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Re: Honeywell 3way Normally Open Zone Valves


Quote:
Originally Posted by DuMass View Post
With a 3-way valve, one side will always be open to the common port while the other side is closed.
On those smaller Honeywell valves, arenít the individual ports marked with A, B and AB?
Port AB is common and port A or B will be open or closed to it, depending on the position of the diverter.
Yes. And what the valve is being used for determines how it is positioned. And how it is controlled.
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Old 12-19-2010, 10:27 AM   #6
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Re: Honeywell 3way Normally Open Zone Valves


True. I assume these are on the hot and chilled water loops for a fan coil where you can generally see the line supplying the coil, so that should generally indicate which position a replacement valve needs to be in.

The Honeywell and larger Barber Coleman valves with hydraulic actuators, all had spring return, so that, along with the temperature changes of the piping should also help in determining the NO/NC positions of a deenergized diverter valve that is already installed.
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Old 12-19-2010, 10:31 AM   #7
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Re: Honeywell 3way Normally Open Zone Valves


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Originally Posted by DuMass View Post
True. I assume these are on the hot and chilled water loops for a fan coil where you can generally see the line supplying the coil, so that should generally indicate which position a replacement valve needs to be in.

The Honeywell and larger Barber Coleman valves with hydraulic actuators, all had spring return, so that, along with the temperature changes of the piping should also help in determining the NO/NC positions of a deenergized diverter valve that is already installed.
Yes it should.

I've seen that valve used, for many things. Some set ups had 2 valves(4 pipe system) and it was easy to over look that the one valve was installed turned the opposite way of the other.

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Last edited by beenthere; 12-19-2010 at 02:46 PM. Reason: should have been 4 pipe not 3 pipe
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