23VAC Parallel Switches ? - Electrical - DIY Chatroom Home Improvement Forum


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Electrical

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 05-07-2010, 03:04 AM   #1
Newbie
 
Join Date: Apr 2010
Posts: 15
Rewards Points: 10
Default

23VAC parallel switches ?


Hi

I want to control my whole house ducted Dehumidifier with 2 separate Thermostats with built in dehumidistats each.

If stat 1 calls for dehumidifier then it will close switch and complete 23 vac to trigger dehumidifier.

If stat 2 calls for dehumidifier then it will close switch and complete 23 vac to trigger dehumidifier.

If BOTH stat 1+2 calls for dehumidifier will i be sending 23+23vac = 46 vac to the dehumidifier on terminal? or is it always 23 VAC i don't want to damage the unit.

Will my crude drawing below work ok?

Thanks Again



Advertisement

Charlie123 is offline   Reply With Quote
Old 05-07-2010, 07:24 AM   #2
Sparkaholic
 
Join Date: May 2010
Location: Miami, Florida
Posts: 192
Rewards Points: 150
Send a message via Yahoo to sparks1up
Default

23VAC parallel switches ?


The switching portion of your drawing will work fine. You are applying the same voltage from the same source to both t-stats so the voltage will not be doubled. If both t-stats switch on the humidifier it will just keep it running until both have been satisfied.

The part of your drawing that doesn't look right is that you are showing the voltage looping back to the xfmr when it should be going to the coil of the contactor that starts the dehumidifier. I think you probably know that and just didn't draw it right. Good luck!

Advertisement

sparks1up is offline   Reply With Quote
Old 05-07-2010, 08:08 AM   #3
Member
 
Join Date: Jul 2008
Location: NW of D.C.
Posts: 5,990
Rewards Points: 2,000
Default

23VAC parallel switches ?


I agree with post #2.

It's a wire-OR circuit.
If one OR the other OR both switches close, the dehumid. works
but
your diagram shows the switches shorting the dehumid's transformer.
Yoyizit is offline   Reply With Quote
Old 05-07-2010, 08:08 AM   #4
Member
 
Join Date: Nov 2007
Location: Nashua, NH, USA
Posts: 6,976
Rewards Points: 2,048
Default

23VAC parallel switches ?


Caution for those eavesdropping. Do not connect this up literally as shown, you will short out the transformer.

There must be a load in the circuit with the transformer output and the thermostats.

The contactor coil or input (mentioned above but not pictured) is a load, an acceptable load.

The transformer output (secondary) is a source, not a load. Switches and thermostats and humidstats are not loads. The contactor output or controlled contacts is a switch and not a load.

If the humidifier (machine) has just two exposed terminals labeled "for 23 (or 24 or 32) volt thermostat" then you may connect up both thermostats as pictured above.
__________________
Forget super sized fries. The Washington Redskins could promote healthy eating with First Lady Obama by choosing a (red skinned) turnip for a mascot.

Last edited by AllanJ; 05-07-2010 at 08:16 AM.
AllanJ is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Question about switches on a 20 amp circuit Abs777 Electrical 6 04-28-2010 11:09 AM
Replacing switches turning into nightmare. RyanD Electrical 19 05-26-2009 07:19 PM
wiring 2 hi/low/limit switches in parallel CowboyAndy HVAC 3 12-11-2008 02:50 PM
light switches wired in series -- why? magnolia Electrical 2 05-11-2008 12:16 PM
Need help replacing switches in four-way circuit magnolia Electrical 3 05-09-2008 10:40 PM




Top of Page | View New Posts