Alde power draw?

lkc001

does anyone know @ how much power the Alde heater on propane draws from the trailer 6 volt batteries?  

pthomas745

Not a lot.  The info is buried in the manual, but there is an "FAQ" that says "about .02 to .06" of an amp. The pump uses a little bit, and the exhaust fan uses a little.

How much electrical power does the heating system use?

There are two mechanisms in the Alde Compact boilers that draw >0.1 A current from the vehicle 12-volt battery. The exhaust fan venting waste gases (≈0.4 A), and the heating fluid being pumped around the circuit (≈0.2 A). So normal draw from the vehicle battery is between ≈0.2–0.6 A, including the control panel. Max draw is 1.9 A for approximately three seconds at system start-up.

Max draw from 120 V mains is ≈7,9 A on 1 (1 kW) or ≈15,8 A on 2 (2,1 kW)

lkc001

pthomas745 said:

Not a lot.  The info is buried in the manual, but there is an "FAQ" that says "about .02 to .06" of an amp. The pump uses a little bit, and the exhaust fan uses a little.

How much electrical power does the heating system use?

There are two mechanisms in the Alde Compact boilers that draw >0.1 A current from the vehicle 12-volt battery. The exhaust fan venting waste gases (≈0.4 A), and the heating fluid being pumped around the circuit (≈0.2 A). So normal draw from the vehicle battery is between ≈0.2–0.6 A, including the control panel. Max draw is 1.9 A for approximately three seconds at system start-up.

Max draw from 120 V mains is ≈7,9 A on 1 (1 kW) or ≈15,8 A on 2 (2,1 kW)

So does that mean0.2-0.6 A per hour?

lkc001

Or .02-.06 per hour?

californication

@lkc001 it's 0.2 (or 0.3) to 0.6 per hour for boiler activity: "Measure the boiler’s power consumption on operation. It should be 0.3 A on stage 1 and 0.6 A on stage 2"

You can find these values on page 13 here: https://www.alde.co.uk/wp-content/uploads//2019/08/alde_3020_service.pdf

pthomas745

Sorry, I could have been more specific.

The power numbers are basically "when the Alde is actually running", with the pump on and the exhaust fan on.  Once the Alde and the trailer is warm, the Alde would go on and off as the thermostat calls for heat.

It is impossible to guess how many times or how long the Alde would run after it gets warm, but in reasonable conditions the Alde might run 20 minutes an hour.  Of course, it might run for an entire hour depending on how cold the trailer is and how much heat you are asking for when you first turn it on.

Mickerly

The control panel is also DC powered. Anytime you the Alde is ON, the panel is powered. I think someone with a battery monitor captured all these numbers (perhaps it was on Jenn's site). I recall the Jensen being the highest draw and the Alde is second; not counting the refrigerator if you have the CS.