Split system aircon on motorhome

Submitted: Tuesday, Jun 05, 2018 at 17:40
ThreadID: 136802 Views:1470 Replies:6 FollowUps:10
This Thread has been Archived
Toying with fitting a split system airconto motorhome Powering will be no problem with a powerful lithium solar setup .My inquiry to any whohave a rear mounted outer section is do you have problems with dust mud etc affecting the performance of the system .
Thanks in advance
Mary
"Some people walk in the rain,others just get wet."

Lifetime Member
My Profile  My Position  Send Message

Back Expand Un-Read 0 Moderator

Reply By: HKB Electronics - Tuesday, Jun 05, 2018 at 18:20

Tuesday, Jun 05, 2018 at 18:20
How much solar do you have?
HKB Electronics

Business Member
My Profile  Send Message

AnswerID: 619373

Follow Up By: RMD - Tuesday, Jun 05, 2018 at 19:14

Tuesday, Jun 05, 2018 at 19:14
Wouldn’t it have to have a massive lithium multiple battery setup and also the whole motor home covered in solar panels? Can’t imagine it is possible to sustain the current requirements for a split system.
0
FollowupID: 891634

Follow Up By: Frank P (NSW) - Tuesday, Jun 05, 2018 at 20:09

Tuesday, Jun 05, 2018 at 20:09
Kimberley Kampers has found a way to do it on their Karavans and Kruisers with, IIRC, 400Ah lithium and 520 watts of solar.
0
FollowupID: 891635

Follow Up By: HKB Electronics - Tuesday, Jun 05, 2018 at 21:47

Tuesday, Jun 05, 2018 at 21:47
Know someone who had one, they said it didn't work. Kimberly state 2.2kW cooling, if you allow 1kw draw then your 400Ah of lithium would last about 5 hours at night, 50% duty cycle say 10 hours. Not really particle.

Be interested to hear from others who have one how they well they work off batteries?
HKB Electronics

Business Member
My Profile  Send Message

0
FollowupID: 891639

Follow Up By: Keith B2 - Wednesday, Jun 06, 2018 at 07:57

Wednesday, Jun 06, 2018 at 07:57
My build will have a little Toshiba split system running of 400 AH Lithiums with about 1Kw of thin film solar panels. For me the key is to run the aircon overnight on its low setting and just cool enough for a comfortable night's sleep.

The power draw on low setting is a little over 200 watts. On my sums and allowing for losses, the batteries should return to full charge by lunchtime if there is full sun.

Soplar 4RVs has a very handy solar calculator which I used to double check my fugures.
Solar calculator
0
FollowupID: 891648

Follow Up By: HKB Electronics - Wednesday, Jun 06, 2018 at 11:20

Wednesday, Jun 06, 2018 at 11:20
Keith B,

I take it your looking at an inverter unit?
HKB Electronics

Business Member
My Profile  Send Message

0
FollowupID: 891655

Follow Up By: Keith B2 - Wednesday, Jun 06, 2018 at 11:44

Wednesday, Jun 06, 2018 at 11:44
Correct. I think the roof mounted RV ones are old technology and very noisy to boot. The one I have selected is this one: RAS - 07BKV - A1.

Here's the link: Small Toshiba Aircon

This was the smallest I could find in a reputable brand. But the warranty disappears as soon as you put it on a caravan. I am doing a dry fit with it now.
0
FollowupID: 891657

Follow Up By: RMD - Wednesday, Jun 06, 2018 at 17:13

Wednesday, Jun 06, 2018 at 17:13
Keith B2
You need an 12v or 24v to 240vAC inverter first don't you? after that the inverter of the aircon then does it's thing with that power.
Two lots of power conversion does mean losses to some degree, all of which have to be factored in as the total drain amount of AH on any battery type or solar system.
0
FollowupID: 891664

Follow Up By: Kazza055 - Wednesday, Jun 06, 2018 at 18:32

Wednesday, Jun 06, 2018 at 18:32
Have a look over at Caravaners Forum, there are many there that are fitting domestic splits (inverter type) and running them of solar.
0
FollowupID: 891670

Follow Up By: Keith B2 - Wednesday, Jun 06, 2018 at 19:41

Wednesday, Jun 06, 2018 at 19:41
I ave a 1.4Kw Victron inverter charger to occasionally work the microwave while the aircon is on.
I have allowed for 20% losses in the inverter and wiring, which I think is more than enough.
You can see my build on Myswag/ My camper trailer build/ World's Slowest build".
World's Slowest Build
Keith
0
FollowupID: 891673

Reply By: IvanTheTerrible - Tuesday, Jun 05, 2018 at 22:02

Tuesday, Jun 05, 2018 at 22:02
To answer your actual question. Most I have seen have the unit covered while not in use usually with canvas
AnswerID: 619376

Reply By: HKB Electronics - Wednesday, Jun 06, 2018 at 09:40

Wednesday, Jun 06, 2018 at 09:40
If you stick to the black stuff then probably nothing required but I would put a cover on it.

If your going to be traveling gravel and dirt roads then dust will be an issue, the red dust gets into everything and will quickly gum things up once wet so make sure cover well and plug up any holes while travelling.

Stones are an issue to, they will fly around and bounce along under the van, they can cause a lot of damage even to the rear of the van if the have something to ricochet off.
HKB Electronics

Business Member
My Profile  Send Message

AnswerID: 619379

Reply By: Keith B2 - Wednesday, Jun 06, 2018 at 11:52

Wednesday, Jun 06, 2018 at 11:52
I think you can hose the outdoor units out.
AnswerID: 619383

Reply By: GerryG - Wednesday, Jun 06, 2018 at 18:25

Wednesday, Jun 06, 2018 at 18:25
We are on a 24volt stand alone system on our property and I wanted to put a small air cond. in our bedroom. After a lot of research I decided on the Daiken Cora range. The smallest one they had is the 2kw unit that cools only.
This unit has a 5 star rating. It works well. Might be worth looking at.
AnswerID: 619391

Follow Up By: Keith B2 - Wednesday, Jun 06, 2018 at 19:34

Wednesday, Jun 06, 2018 at 19:34
Thanks Gerry,
To get a bit of extra cooling, I paid a premium price and put a Daiken 5Kw in my office some years ago and it conked out after four years. So I have kinda lost faith in the brand. The original no name brand was still running after 14 years.Replaced the Daiken with a Mitsubishi and still running 8 years later. I do hope that yours gives you a better result. The no name is still running after 22 years.
Keith
0
FollowupID: 891672

Reply By: humpback - Thursday, Jun 07, 2018 at 17:34

Thursday, Jun 07, 2018 at 17:34
I have a Samsung 2.5kw split system and have had it for 6 years, when we hit dirt roads i put a canvas cover over it and never had a problem. I have a 2000 watt inverter and 4x120amp deep cycle batteries and i would never try and run the unit on the batteries.I have installed a plug directly to the air condition unit and start up the 2.4 yamaha generator and it only runs the A/C by doing this i get 8 hrs running out of a tank of fuel Hope this helps.
Cheers
Baker
AnswerID: 619406

Popular Content

Popular Products (14)