Shelly PRO 4PM + Shelly Pro 1PM (pool cirkulation pump and heat pump)

    • Autor

    Old pool with 3-fase cirkulation pump and 1-fase heat pump (without wifi). Wish to control both and through wifi/lan. Need to stop the cirkulation pump every 12 hours and depending on water temp shut down the heat pump now and then. Shelly Pro 4PM and Shelly Pro 1PM seems to met my wishes incl. power consuming, acc. power and shedule everything.

    Will history and set time be kept when power is cut off?

    Can I use Shelly DS18B20 Temp. sensor in the same Shelly Pro 1PM as the heat pump?

    Has Shelly another unit for 3-fase with wifi and history?

  • Zur hilfreichsten Antwort springen

    Welcome to the forum!

    Unfortunately, the Shelly pro 4PM is NOT a 3-phase device! To measure the power consumption of your 3-phase pump, a Shelly 3EM and a separate contactor will be needed!

    To control and measure the (1-phase) heat pump, a Shelly pro 1PM may be sufficient.

    „Habt Geduld. Alle Dinge sind schwierig, bevor sie einfach werden!“ (aus Frankreich)

    „Nothing in life is to be feared, it is only to be understood.“ (Marie Curie, 1867-1934)

    „Comment is free, but facts are sacred“ (C.P. Scott, britischer Verleger)

    The selection of an appropriate 3-phase contactor depends on the power rating of your pump. Often, the max. horse power of the motor is rated in the specs of contactors. Alternatively, the max. wattage (kW) of a motor is rated. And the coil voltage of the contactor is relevant: In a 3-phase „european“ mains network, a coil voltage of 230V AC is appropriate. In 110V networks, coil voltage has to be 110V AC.

    Please find attached some pictures of a typical (cheap) contactor, which may be suited for your application - although I‘ve no clue of your pump‘s rating:

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    „Habt Geduld. Alle Dinge sind schwierig, bevor sie einfach werden!“ (aus Frankreich)

    „Nothing in life is to be feared, it is only to be understood.“ (Marie Curie, 1867-1934)

    „Comment is free, but facts are sacred“ (C.P. Scott, britischer Verleger)

    • Autor

    Thanks again, thgoebel.

    I hand this over to my electrician. My cirkulation pump use 0,45 kw (not variable) and here in Norway we have 230 v system. I think a 3-fase give 410 v.

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