2 environmental controlers

so i just got the oppourtinity to do a few cycles in a 6000watt bloom room.
everything is set up ready to go, just add plants and soil

the room as 6 HPS with 2 6" inline fans air cooled hoods...outside air through lights to outside.
1 propane co2 water cooled burner
1 8" fan/canfilter to remove smelly air
2 dehumidifers

so the question is there are two controllers in the room, how do i hook them both up so i do not evacuate while CO2 is on. becasue the sentinal will only turn off co2 when the cooling fan is on, not the humidity
i understand how the sentinal works. plug in heater, dehumidifier, co2 and cooling fan and set all the levels.

here is a pic

ok man

1 the propane co2 system ..........if this is a low flame burning that is adding Co2 u are dehumidifying the room already the fire is removing it (your co2 is in a sealed area so it pools up around the plants)

so unless your RH is in the upper 90s u should not need dehumidifiers with a soil grow

the configuring i would get a 3 senor just for the Co2 only u put the senor at bud lvl and it will keep the ppm to the lvls u want even with fresh air intake

co2 is a heavy gas so it will pool up in your seal area raising to the venting point ........u want to keep the senor at bud lvls so u are getting the full benefit of the co2 .....now with u pumping fresh air in and emptying the area out every few mins u want a few fans inside to make a vortex so the air and co2 are always moving offering only the plants fresh new stuff to use in the growth

http://www.amazon.com/Analog-CO2-Controller-Remote-Probe/dp/B00CJJ78FU/
i like this one the senor has photo (so when lights are off not wasting gas ) and it has a long senor cord

yea, i know all that.
the controller has a sensor at plant level.

so i plugged the air cooled hoods into bottom timer so it keeps the lights cool only as needed, since its like 20-40 F outside right now i can have those fans come on as needed so the room doesnt ever get too cold or hot without removing any CO2. winter growing is best lights stay super cool.

the top controller controls the CO2, humidity day and night, heat night if needed and extra cooling (10in pulling in outside filtered air) if needed when co2 is off.

i have only ever grown with one controller, 2 is even better. much more versitile. and when it does get warm i can cool the lights all 12 hours with a reg timer.

If that is propane burner it's ADDING moisture, not taking away. Most Dehu units these days have a humidistat on it, no need to plug it into a controller