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View Full Version : Cooling, lighting and fan code


conroetx2008
10/15/2011, 08:02 PM
Cooling, lighting and fan code, I'm wanting to run my fans with the chiller temp but not to run if lights 1-4 or on and run 60min after the chiller turns off….this is the best code I have come up with yet but still not right. Help please……Thanks Tommy

Apex

[Inside_Fan]
Fallback OFF
If Temp > RT+0.4 Then ON
If Outlet Light1 = OFF Then OFF
If Outlet Light4 = OFF Then OFF
If Temp < RT+0.2 Then OFF
Defer 000:10 Then ON
Defer 060:00 Then OFF

schwaggs
10/16/2011, 07:35 AM
Can you tell us what's not working?

swearint
10/16/2011, 08:50 AM
I'm going to assume it is the Defer OFF that is not working the way you want. It applies to any statement that would set the outlet to OFF. If you want the Defer to only apply to the chiller than you would need a virtual outlet to isolate it. For instance:

[Fan_Delay]
Set OFF
If Outlet Chiller = ON Then ON
Defer 60:00 Then OFF

[Fans]
Fallback OFF
Set OFF
If Outlet Fan_Delay = ON Then ON
If Outlet Light1 = OFF Then OFF
If Outlet Light4 = OFF Then OFF

The outlet Fan_Delay is ON whenever the Chiller outlet is ON plus 60 minutes after it turns OFF. So the Fans outlet will be ON as long as Fans_Delay outlet is ON. If either of the light outlets are OFF, the Fans oultet will turn OFF immediately. I eliminated the Defer 00:10 then ON statement since that should be in the Chiller outlet.

Todd