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qhumberd
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Alde power draw?

lkc001
lkc001 Member Posts: 877
in Heating/Plumbing & Winterizing
does anyone know @ how much power the Alde heater on propane draws from the trailer 6 volt batteries?  
2018 Tab 400
2016 Nissan Frontier SV 4x4 Crew Cab
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  • pthomas745
    pthomas745 Administrator, Moderator Posts: 4,527
    edited November 2024
    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)


    2017 Outback
    Towed by 2014 Touareg TDi
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  • lkc001
    lkc001 Member Posts: 877
    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?
    2018 Tab 400
    2016 Nissan Frontier SV 4x4 Crew Cab
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  • lkc001
    lkc001 Member Posts: 877
    Or .02-.06 per hour?
    2018 Tab 400
    2016 Nissan Frontier SV 4x4 Crew Cab
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  • californication
    californication Member Posts: 46
    @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"



    Tab 320s Boondock 2022 | Jeep JKU 2017
    Mods: MaxxAir 7500S | 2x 100Ah LiFePo4 | Victron Orion-TR DC/DC | Victron MPPT 75/15 | Ultimate Trailer Jack
    2024: 7,949 miles; 76 days; OR, CA, NV, UT
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  • pthomas745
    pthomas745 Administrator, Moderator Posts: 4,527
    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.
    2017 Outback
    Towed by 2014 Touareg TDi
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  • Mickerly
    Mickerly Member Posts: 485
    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.
    2018 320CS-S
    "Just Enough"
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