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Aircon Thermostat for After Hours Running

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netmark

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Hi All
I'm looking for a circuit to do the below:-
When a switch is turned on (Afterhours Switch) When the temp reaches 33C a relay closes and when the temp reaches 25C the relay turns off.
I thought this wouldn't be to hard to do, so I got 2x thermostats. 1x to set at LOW Temp point and 1x to set at the HIGH Temp point, I made the assumpution that the LOW setpoint's built in relay would be closed after hitting 25C and above opps fail I forgot the 1.0C threshold setting.
So this is what I want.

Upto 33C Relay=open
AT 33C Relay=closed
Down to 25C Relay=closed
At 25C Relay=open

Help please, having some trouble remembering 30yrs ago of theory.
Thanks
 
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Does this make sense to you?
 

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Are these 24AC thermostats like used in house heating systems?
 
I know it's assuming a lot, but I can only work with the products that I know about. OP might not even be in the US.

and yes, those are supposed to be 24 VAC thermostats set on "cool" and using standard color codes for USA.
 
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They are being reviewed before showing up on the forum. Happens to all new members.
 
The Aircon has an addon control Box. To turn on the Aircon only a loop circuit needs to be made.
The Thermostats have a 250V~ 5A Relay with NO & NC contacts, so yes there are normal HVAC thermostats.
So this After Hours Control Ciruit needs to close a Relay contact point in the below
Upto 33C Relay=open
AT 33C Relay=closed
Down to 25C Relay=closed
At 25C Relay=open

After a day's migraine head feeling very poor, I hope this covers questions.
Mark
 
The only question presented was: Do you understand the drawing?

I assure you it makes perfect sense to a professional air conditioning installer/repairman. If the symbols do not make sense to you I will define them for you.
 
Yes I understand the drawing.
The lables I'm not familiar with, but the concept I can understand.
Thankyou.
 
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