Running Truma air con while driving.

[G1969]

Any reason why you can’t / shouldn’t run the roof mounted truma air con whilst driving via multiplus inverter?. I know it will take a good chunk of power ( I think about 80amps per hour) but my system will provide this.
Does anyone else run their’s .

 

[Bessy765]

We have 2 x 280 amp Lithium pro, 700 watts of solar, a Victron 12/2000/80-30 inverter charger. Voltronic 90 amp B2B we run a Dometic Freshjet 2200, both when parked up and when driving if needed. The only precaution is if in heavy or slow moving traffic turn it off to stop the potential of over heating the alternator.

 

[Ridgeway]

We run ours occasionally (Truma underfloor aircon) and just monitor the batteries. Even with B2B and on a sunny day the batteries wouldn’t do more than about 90mins

 

[LithiumConvert]

An 8 meter motohome will take a lot of cooling.

Even 80Ah per hour will not really do the job, unless you have the cab aircon on as well.

 

[G1969]

An 8 meter motohome will take a lot of cooling.

Even 80Ah per hour will not really do the job, unless you have the cab aircon on as well.

Yes both would be on, just wondered if any damage could be caused

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[LithiumConvert]

The alternator would be my concern.

What size B2B do you have?

 

[Bessy765]

The trick is not to try and turn the van into a fridge!

 

[G1969]

The alternator would be my concern.

What size B2B do you have?

Orion 50amp & 25amp shaudt, 4x 280 Fogstar s

 

[LithiumConvert]

Your aircon would be needing to run both of those at full power all of the time it was on and that is not taking into account any other demands on the system. (fridge, etc)

So, no - No immediate damage would be done but I would say not recommended. The continuous load on the alternator is too high.

 

[G1969]

Thanks, but the load would be provided via the multipus inverter, drawing down on batteries, these intern topped up via alternator at I presume a safe load? Or is this not correct?

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[G1969]

Oh and 700w solar

 

[Jonno1103]

You can buy a separate specific DC kit to allow usage when driving.

 

[G1969]

You can buy a separate specific DC kit to allow usage when driving.

What’s that then please?

 

[Bessy765]

The kit may be specific but it comes from the batteries alternator solar. And is not as universal as a solar lithium set up.

 

[herald_400rl]

What’s that then please?

Dometic DC Kit DSP-T12 For Dometic Air Conditioners

The Dometic DSP-T12 DC kit is for Air Conditioners Freshlight Freshwell Freshjet

www.jacksonsleisure.com

Its a Dometic kit, can't see its much more than an inverter to be honest.

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[G1969]

Dometic DC Kit DSP-T12 For Dometic Air Conditioners

The Dometic DSP-T12 DC kit is for Air Conditioners Freshlight Freshwell Freshjet

www.jacksonsleisure.com

Its a Dometic kit, can't see its much more than an inverter to be honest.

Thanks, that’s interesting and confirms okay to use in motion. Agree just an inverter?, so so I see no difference in using my multiplus.

 

[Bessy765]

We are at Dole in France bright sun clear view of sky running A/C for four hours parked up no help from engine batteries were at 100% at start using 2 x 280 Lithium pro batteries 700 watts of solar and a Victron 12/2000/80-30 inverter charger. Set to 20c the trick is not to try and turn the van into a fridge. When driving we have a Votronic 90 amp B2B and find if good solar gain it keeps up, we just turn it off if in heavy traffic or climbing hard.

 

[herald_400rl]

Thanks, that’s interesting and confirms okay to use in motion. Agree just an inverter?, so so I see no difference in using my multiplus.

I wouldn't like to mark my own homework but looking down the "whats supplied" theres nothing I can see to warrant 2k.