Cyclone A/C Question.
- Thread starter Tbarnes
- Start date
jmgratz
Original Owners Club Member
Re: Question?
Ok, then you would have to regulate them manually as they would draw too many amps to run all 3 at once.
Ok, then you would have to regulate them manually as they would draw too many amps to run all 3 at once.
avvidclif
Well-known member
Re: Question?
AFAIK only the Landmark comes with a power management system. The Cyclone's have a manual system. IE: the switch that lets you select which 2 A/Cs you want to run. By rewiring the setup you can run all 3 if connected to 50A. If connected to 30A you have to manage it yourself and limit the number of ACs running. The mod to change it over has been discussed here several times. Basically, as wired, all 3 ACs are on the same 50A leg and that's too much therefore a limit. By moving 1 AC to the other 50A leg all three can be run.
AFAIK only the Landmark comes with a power management system. The Cyclone's have a manual system. IE: the switch that lets you select which 2 A/Cs you want to run. By rewiring the setup you can run all 3 if connected to 50A. If connected to 30A you have to manage it yourself and limit the number of ACs running. The mod to change it over has been discussed here several times. Basically, as wired, all 3 ACs are on the same 50A leg and that's too much therefore a limit. By moving 1 AC to the other 50A leg all three can be run.
OEFVET
Well-known member
Re: Question?
50 amps is just not enough to run 3 AC units. Even if you rewire and run a unit on the separate leg. The ACs draw from 20-30amps when turning on and 15-20 while cooling. The first time any additional amps are required for anything the circuit will blow. Most Cyclone owners are rewiring the switch to configure it so they can run the two ACs they prefer to run such as the garage and bedroom, or living room and garage, or living room and bedroom.
50 amps is just not enough to run 3 AC units. Even if you rewire and run a unit on the separate leg. The ACs draw from 20-30amps when turning on and 15-20 while cooling. The first time any additional amps are required for anything the circuit will blow. Most Cyclone owners are rewiring the switch to configure it so they can run the two ACs they prefer to run such as the garage and bedroom, or living room and garage, or living room and bedroom.
jmgratz
Original Owners Club Member
Re: Question?
What would be nice if there were a toggle switch to select which one(s) you desire to run.
What would be nice if there were a toggle switch to select which one(s) you desire to run.
dewwood
Well-known member
Re: Question?
I believe you can run all three like an earlier poster said. 50 amp service on an RV is actually two 50 amp lines for a total of 100 amps. Each leg of 50 goes into separate bars in your main box. Just rewire one air conditioner to pull off of the opposite bar that the other two are pulling off of and you will be able to run all three.
I believe you can run all three like an earlier poster said. 50 amp service on an RV is actually two 50 amp lines for a total of 100 amps. Each leg of 50 goes into separate bars in your main box. Just rewire one air conditioner to pull off of the opposite bar that the other two are pulling off of and you will be able to run all three.
jimtoo
Moderator
dewwood is correct. Check your breakers in any park, 2 ,,50amp. 50 amp service is 2 independent 50 amp rated, 120v service lines.
avvidclif
Well-known member
I don't know who advised you but 50A service is 2 120v line each rated for 50A for a total of 100A.
Az_Ernie
Well-known member
Re: Question?
Why would Heartland put all three A/C's on the same leg/bar? I'm completely ignorant on this subject, just curious.
dewwood
Well-known member
Re: Question?
I don't know if all three AC's are on one leg, they may not be. I do not have a Cylcone with three AC's. The OP stated he could not run all three AC's at once so I was just saying that it is possible to run three with the available 100 amps he would just have to figure out how they are wired in his coach and make sure they were not all on one leg.
I don't know if all three AC's are on one leg, they may not be. I do not have a Cylcone with three AC's. The OP stated he could not run all three AC's at once so I was just saying that it is possible to run three with the available 100 amps he would just have to figure out how they are wired in his coach and make sure they were not all on one leg.
Az_Ernie
Well-known member
porthole
Retired
Re: Question?
Those trying to run all 3 AC units would be wise to check your loads at the breaker panel.
My panel was not balanced well at all, main AC, converter, hot water heater and all the outlets were on one leg (which included the coffee maker, micro and W/D).
Cyclones are equipped with 80 amp converters, so it is not unusual for me to see 12 amps or more at times, with nothing else on.
I don't see why all three AC's could not run at the same time - if you balance the panel.
My guess is they are set to only run any 2 of 3 units because of either RIVA codes - or more likely, because the available generators are only 5500 watts. Two circuits at 30 amps each, and that is under ideal conditions (temperature, altitude etc).
Park supply voltage is something we have to concern ourselves with as well.
"If" our trailer had the 3 AC units I would balance my 100 amp (50 x 2 = 12,000 watts) panel that:
a) indeed balances it
b) balance it based on our use.
I would then have some simple to use method of isolating one of the three AC's when using the genny.
Our home generator has load shedding built into the the main control unit. It sheds the AC simply be disconnecting the T-stat call for the compressor.
So, perhaps a simple mini on/off switch on the T-stat to the compressor circuit will work.
Onan
Ambient conditions for rated power output with muffler and RV enclosure, per ISO 8528-1:-
Temperature: 77° F (25° C)
Altitude: 500 ft (152.4 m), (99 kPa dry)
Typical power output change based on ambient conditions:
Temperature: Power output decreases 1% for every 10° F (5.5° C) increase
Altitude: Power output decreases 3.5% for every 1000 ft (305 m) increaseRatings represent minimums. Actual performance may be significantly higher based on installation and operatingconditions.
The gasoline versions are more efficient then the LP's. So non toy hauler types have an additional loss of power available.
Using the above info, "if" we were camping in the Smoky Mountains back in August 2008 during the drought and heat wave, our 45.8 amp actual output Onan 5500, at a temperature of 106 degrees and elevation of 6500', would have had an output of only 35.9 amps.
Those trying to run all 3 AC units would be wise to check your loads at the breaker panel.
My panel was not balanced well at all, main AC, converter, hot water heater and all the outlets were on one leg (which included the coffee maker, micro and W/D).
Cyclones are equipped with 80 amp converters, so it is not unusual for me to see 12 amps or more at times, with nothing else on.
I don't see why all three AC's could not run at the same time - if you balance the panel.
My guess is they are set to only run any 2 of 3 units because of either RIVA codes - or more likely, because the available generators are only 5500 watts. Two circuits at 30 amps each, and that is under ideal conditions (temperature, altitude etc).
Park supply voltage is something we have to concern ourselves with as well.
"If" our trailer had the 3 AC units I would balance my 100 amp (50 x 2 = 12,000 watts) panel that:
a) indeed balances it
b) balance it based on our use.
I would then have some simple to use method of isolating one of the three AC's when using the genny.
Our home generator has load shedding built into the the main control unit. It sheds the AC simply be disconnecting the T-stat call for the compressor.
So, perhaps a simple mini on/off switch on the T-stat to the compressor circuit will work.
Onan
Ambient conditions for rated power output with muffler and RV enclosure, per ISO 8528-1:-
Temperature: 77° F (25° C)
Altitude: 500 ft (152.4 m), (99 kPa dry)
Typical power output change based on ambient conditions:
Temperature: Power output decreases 1% for every 10° F (5.5° C) increase
Altitude: Power output decreases 3.5% for every 1000 ft (305 m) increaseRatings represent minimums. Actual performance may be significantly higher based on installation and operatingconditions.
The gasoline versions are more efficient then the LP's. So non toy hauler types have an additional loss of power available.
Using the above info, "if" we were camping in the Smoky Mountains back in August 2008 during the drought and heat wave, our 45.8 amp actual output Onan 5500, at a temperature of 106 degrees and elevation of 6500', would have had an output of only 35.9 amps.
Randor
Active Member
On my 4150 I can run the garage AC and either the bedroom or living room AC. I don't really care to rewire the AC's since I am not an electrician and a close relative to Tim the Toolman Taylor. On a really hot day I will run run the Bedroom and Garage AC's with the doors open between them and the living room. I don't use the garage a lot so I don't usually run the garage AC - instead, if I am in the living room I will run the bedroom AC (with bathroom pocket door closed) and a tower fan in the doorway to the living room blowing air into it. If I am in the bedroom, I will reverse it and run the living room AC. I do it that way because the AC units are really loud and I prefer to have the noise in the other room which reduces the direct noise level.
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