HVAC Question

[dieselrealtor]

Trying to figure out what I can run with my Honda eu3000is generator.

Does a 240v condenser unit require split phase or (in a pinch) can it run off the same leg of 120v?
Does 1 leg of 120 go to fan motor & the other go to compressor or is the compressor 240v split phase?

I beleive it is about a 2ton(+or-) Bryant unit.

Thanks in advance.

 

[Ingomike]

Not sure how to answer your question but when I was looking into similar questions one thing popped up after I thought I was set to run the AC, the power draw of the furnace fan. That was a big draw I had not accounted for.

 

[dieselrealtor]

I have thought about that as well. If compressor doesn't require a split phase I will probably try to have blower fan running already to reduce startup draw or put a delay of some sort on it.

If it "theoretically" will fly, it will be a temporary solution to keep the house from getting too warm in an extended outage.

Planning to get a larger 240v genset, hoping to find a diesel rig.

 

[jamin]

For a condenser to operate you need two legs L1 & L2 each leg to ground is 120v and when combined are 240v. It will not operate with two feeds on the same leg.

The compressor and condenser fan motor are both 240v.

 

[firecadet613]

You can swap the furnace from being switched to running on a plug. Pull the switch, put in an outlet, then a pigtail on the furnace itself.

That'll help you run the fan in a pinch, but nothing, nothing replaces a big generator.

We've had a few multi day outages this year and the Harbor Freight 9500 can almost run my entire house at the same time, I just need to manage the larger loads. That being said, I just picked up a Duromax 13,000w which will do it all...

 

[Creedmoor]

You can swap the furnace from being switched to running on a plug. Pull the switch, put in an outlet, then a pigtail on the furnace itself.

That'll help you run the fan in a pinch, but nothing, nothing replaces a big generator.

We've had a few multi day outages this year and the Harbor Freight 9500 can almost run my entire house at the same time, I just need to manage the larger loads. That being said, I just picked up a Duromax 13,000w which will do it all...

I have a Miller Bobcat 250 welder / generator that I have run my home with on a few occasions.
The good part in Indiana is the main home has natural gas appliances. A whole lot less fuel is needed, for the most part I can run a old Honda 2,500

 

[Leo]

My small, 2200 Watt suit case size generator will run my gas furnace OR my refrigerator and a small charger on my deep cycle battery. It is never a good idea to run more tha 60 or 70% of full load for very long.

Like jamin said you cannot have both leads of a compressor motor run on the same phase. It is not just the voltage, but the timing of the sine wave.

 

[firecadet613]

I have a Miller Bobcat 250 welder / generator that I have run my home with on a few occasions.
The good part in Indiana is the main home has natural gas appliances. A whole lot less fuel is needed, for the most part I can run a old Honda 2,500

Correct, just not A/C then. That's what made me move up from a 3500 to a 9500. And moving to a place that's all electric (with fairly frequent outages) made me buy the 13k.

It's essential a whole house generator without the auto transfer switch.

 

[Creedmoor]

Correct, just not A/C then. That's what made me move up from a 3500 to a 9500. And moving to a place that's all electric (with fairly frequent outages) made me buy the 13k.

It's essential a whole house generator without the auto transfer switch.

Yes, I dont own a auto transfer myself. My Bobcat sits in the shop on wheels, I move it near the roll up and I have a 220V and a few 120V male to male plugs. I turn the main breaker off and back feed everything.
On occasion with turning off all the breakers on one side of my mail panel, I have plugged in a 120V male to male to the house and just made one side of the 200A panel hot.

 

[BiscuitsandGravy]

How large of diesel genny are you looking for?

 

[dieselrealtor]

How large of diesel genny are you looking for?

Kind of depends on price, probably nothing smaller than 4kw with 240v