DoubleAtotheRON
Well-Known Member
It's a new 2 ton Carrier with a condenser line going to the outside of the building.
LED lights not doing so good.
- Thread starter SDK420
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SDK420
Well-Known Member
yea idk your situation maybe you cant get away with the water thing like that but for 18 lights 2 tons seems short. maybe get a 3.5ton
DoubleAtotheRON
Well-Known Member
That's not alot of headroom... maybe you could dim it down. IDK, I've never used the dimmers, I just raise them higher.
DoubleAtotheRON
Well-Known Member
My brother is an HVAC tech for 35 years.. I gave him my specs, BTU's for the lights, etc.. he consulted with a couple other techs, and they suggested a 1.5 ton,... I was like... make it 2 for good measure. Their theory was, and by bro has always told me this, is that you can have too much AC for any given situation. Too much and it will kick on and off and burn up your compressor quick. Too little, same thing, it will run all the time.
DoubleAtotheRON
Well-Known Member
Where we are, it gets up to 105-108 during the summer.. some summers have gone triple digits for 90+ days..... it's just brutal here for anything.
SDK420
Well-Known Member
also if you try that water thing you could test it with a sprinkler at first to see how much it help. i would let it run through the fan all the time. i was think like 1/4 inch ro tubing and some flow restricted emitters properly placed throughout the condenser coil so the water slowly and even runs down the coil. but if your property manager starts asking why there is so much water running off the roof that might not be okay. but you could run it down a drain and only run it when the compressor is running. put a temp meter in your vents output and measure the temps of the air before and after water
ive run a ac that ran for 5 minutes and off for 2 minutes. it cycled like this for 6 years and it didnt burn up. now its in a house and has been working great still. for what its worth it was a scroll type compressor. the biggest problem with short cycling is the ac wont have enough time to remove humidity fast enough from the air. if your talking about that room in your journal then id say 3.5 tons. maybe dehumidifiers at night when the ac dont run to keep the humidity down
ive run a ac that ran for 5 minutes and off for 2 minutes. it cycled like this for 6 years and it didnt burn up. now its in a house and has been working great still. for what its worth it was a scroll type compressor. the biggest problem with short cycling is the ac wont have enough time to remove humidity fast enough from the air. if your talking about that room in your journal then id say 3.5 tons. maybe dehumidifiers at night when the ac dont run to keep the humidity down
SDK420
Well-Known Member
not to mention that ac would shortcycle in the -5 -- 115 degree temps for all those years. in the winter you can use a pressure switch on the condenser to shut the fan off in the winter if you need to. Dont run the fan in the on position all the time either. it will evaporate water off the coil and put it back into the air really fast. if you can make sure your blower motors are turning off right when the compressor shuts off
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DoubleAtotheRON
Well-Known Member
During a hot spell they say it's "too hot for color TV"... I don't know what the fuck that means.
I am the Property Manager. We have no rules out here. We don't care to run during summer anyways. This is the time we take a break, go on vacation, etc. We do run (3) 4000 sq ft dehumidifiers during veg and flower on turbo and constant drain.. unless it gets too low, then I will set a threshold for like 40% or whatever in late flower. Otherwise, I can maintain mid 70's temp no problem, and crash them in late flower like now to the mid 50's at night.
SDK420
Well-Known Member
sound like fun lol. i always measure dehus by pt per day and you have to take in account of the ambient temp and humidity to do the math and get the real output of them
DoubleAtotheRON
Well-Known Member
Going from memory here, but I think these units are rated for 70 pints a day each, so like 210 pints a day.
jimihendrix1
Well-Known Member
The Horticulture Lighting Group HLG 550 V2 R-Spec LED light will replace a single-ended 1000W HID while only drawing 480 watts at the wall and exuding the light output of 1,257 umol/s!
IMHO they are grossly overrating the HGL 550 V2 R Spec
Gavita says the 645w 1700e is good for a 4 x 4 area, and is 1700umol
HGL is 1/4 less umol vs the Gavita. 1257umol vs 1700umol
1000w Hortilux HPS is 1600umol Hortilux is 20% more umol, and is also rated for a 4 x 4.
HGL is a good light, but overrated for area covered. More like 3.4ft x 3.4ft
Gavita says LED should be 42.5w Sq/Ft using the very best Samsung/Osram Diodes
IMHO they are grossly overrating the HGL 550 V2 R Spec
Gavita says the 645w 1700e is good for a 4 x 4 area, and is 1700umol
HGL is 1/4 less umol vs the Gavita. 1257umol vs 1700umol
1000w Hortilux HPS is 1600umol Hortilux is 20% more umol, and is also rated for a 4 x 4.
HGL is a good light, but overrated for area covered. More like 3.4ft x 3.4ft
Gavita says LED should be 42.5w Sq/Ft using the very best Samsung/Osram Diodes
SDK420
Well-Known Member
thats not much dehu, maybe even half what you proba
thats exactly how i kinda feel. gavita was the initial thought but not for 1400 each. i do like how they look like they are bigger and the light is more spread out. but i never seen one in person. for 700 dollars ill chopsaw them in half to space them out lol
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SDK420
Well-Known Member
70-pt a day seems a little short for your room. maybe even less than half as much as you would need with a bigger ac. i think your 2ton running all day is removing a LOT of water from the air. i imagine the water runs out the condenser in a steady stream. Measure that water coming from your ac one day and you will be amazed how much dehumidifier it makes up for. I guess in your climate you could probably get your ac to run when lights off but somepeople have to rely on dehus at night to keep the room warm and remove excess moisture
DoubleAtotheRON
Well-Known Member
By your numbers... we're close at 36.375 w per sq ft. Taking 8,730 watts (true draw of 485, not 1000w rated) divided by canopy space of 240 sq ft.
jimihendrix1
Well-Known Member
Gavits 1700e is 25% more powerful. 1700umol vs 1257umol. HUGE difference. Especially if one grows big plants.
DoubleAtotheRON
Well-Known Member
Times 3 man... I have 3 units.. 210 pints a day.
SDK420
Well-Known Member
yea sorry thats what i meant. its still not that much for a big room like that with all those plants. i imagine you only need those 3 because your ac runs nonstop and dehus the air as if you had 8 of them in there. but if you air in your climate is very low humidity then you could just exhaust lots of air. some people have to pull i wet air and condition it
SDK420
Well-Known Member
yea i don't know why i call them gravita i do it all the time sorry lol.
DoubleAtotheRON
Well-Known Member
In the winter, like this current run, I go days with the AC completely off. If its 50 degrees ambient, it does not run. The intake is good enough to maintain ~75 during lights on. Im pulling 1265 CFM into the room with a 14x24 inch exhaust. If it gets up to 70 degrees ambient, then I kick it on. But like right now, we are harvesting, and have been in the 50's-60's.. so its all good.