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Mitsubishi Kumo Station

Anyone installed a Kumo Station yet? We are jumping into the fire tomorrow. I’m just an average joe with IT.

The Kumo cloud is curious; out of the 4 or 5 jobs we’ve installed with Cloud, half the customers struggled and the other half breezed it. All were good with WiFi.

Massachusetts has some crazy big rebates for tying the ductless to fossil fuel (oil or propane) zones via the Kumo Station

The world is changing
Gary Wilson
Wilson Services, Inc
Northampton, MA
www.wilsonph.com
[email protected]

Comments

  • wpmikewpmike Posts: 13Member
    I installed Kumo Cloud on my H2i heat pumps at home. I think the hardest part is taking apart the head and connecting the kumo cloud device. Just follow the direction carefully using your phone to configure the device. They have a transfer ownership feature so you can pass it to your customer.

    One of the reason I installed it, Mitsubishi offer a Wireless Temperature sensor, the default sensor in the head is useless it really doesn't provide a temperature of the room. Here is a link to the device if curious.

    http://meus1.mylinkdrive.com/item/PAC-USWHS003-TH-1.html
  • TAGTAG Posts: 193Member
    I have two 3 head Hyper heat systems (two different properties) -- they use a Honeywell interface. Has Mitsubishi moved to an all new system?

    Mine uses that common wireless wall thermostat that Mitsubishi uses -- all the heads get an interface (plugs into units) and there is a router (or something ) that plugs into the internet. Honeywell online portal.
  • GWGW Posts: 3,488Member
    Yes this is different, it interfaces with the boiler or furnace. New stuff and big rebates
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
  • GWGW Posts: 3,488Member
    Well that was an experience. The directions that come in the box are useless, and, one is supposed to go to mylinkdrive to get the “real” directions. It was just a 70 minute on hold to wait for the right tech guy to take my call
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
  • TAGTAG Posts: 193Member
    Can you explain what it does that's so special?
  • GWGW Posts: 3,488Member
    yes, very large rebates in Mass this year is we are 'displacing' oil or propane heating with the 'integrated' control system. $1600 per 12,000 BTU of 'col climate' heat pump installed ($1000 per 12,000 BTU if it's central heat pump)
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
  • GWGW Posts: 3,488Member
    another Kumo Station install


    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
  • TAGTAG Posts: 193Member
    I get the rebates for the switch from fossil ... but, what is this control doing that's so special above what the unit would do w/o.

  • GWGW Posts: 3,488Member
    Yes this control automatically switches to fossil is cold weather. It’s acting as a dual fuel switch
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
  • GWGW Posts: 3,488Member
    one more- the rebates are big


    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
  • dr_cdr_c Posts: 4Member
    @GW - When you install the Kumo Station with remote temperature sensors, do they replace the wall thermostats for the backup fossil boiler with the contacts in the Kumo Station calling for heat when needed based on the temperature set with the app?
  • GWGW Posts: 3,488Member
    May I presume you’re a Massachusetts person? Mass is the only state with the crazy high rebates. We are taking about Kumo Clouds right? I guess you could say “remote sensor”.

    When set up with Kumo Station, you don’t need traditional thermostats anymore. I feel like that’s too far of a leap and we leave the existing thermostats in place, wired in series with the Kumo Station.

    So, yes, temps are set in the app, and old stats are turned down. Or, pull the stats

    It’s apparent some people in society won’t like this technology; an app-based system and possible “non exact” switchover points”. I have to do a little pre-screening with our potential Kumo customers. When I ask “are you comfortable with general WiFi networking and phone-based apps”, and get a no or a long pause, I won’t install this stuff. The older the person the more I ask (so sorry older folks)

    As I type, it seems inevitable that HVAC will steer towards smart technology. Now it’s an option. Old school heating/cooling dudes will get pushed to the back on the line. Utilities are beginning to push the issue.
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
  • dr_cdr_c Posts: 4Member
    Great. Thanks for confirming that. It read like that was the case in the manuals but was not certain. Up in Maine here - wish we had the rebates. Just using wanting to use Kumo station and Kumo cloud to simplify controls in an application with 4 Mitsubshi zones / 4 boiler zones. 8 thermostats not going over well in this installation.

    Looks like Mitsubshi should come up with a wall mounted “Kumo Thermostat” where you could set the temperature outside the app to help with cross generational acceptance.

    Thanks a bunch.
  • mikeg2015mikeg2015 Posts: 1,058Member
    What I haven’t seen much yet are “smart” system that leverage heat pumps based on predicted building load and outdoor conditions. For example overheating or overcooling when outdoor temps are more optimal, then coasting at other periods or on a minisplit, intentionally limiting output. Also linking with the smart grid in the same manner for tiem of use savings.

    Only works with a higher mass building.
  • GWGW Posts: 3,488Member
    Mike, it seems like Massachusetts has an abundance of electricity (lots of PV solar) and the utilities are trying to encourage people to burn more watts.
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
  • PatrickMPatrickM Posts: 3Member
    @GW Hi - thanks for the comments you've posted here. They're helpful. I am a homeowner with Mitsubishi heat pumps (7 indoor, 3 outdoor units) and am using Kumo Cloud with good success so far. Kumo Station is installed but not yet activated. I have 4 zones for my furnace. I've been reading the available material re the Station (installation, operation, etc.) and one thing is not clear to me, which is - how do I allow for control of each furnace zone via the indoor units? It seems that I would need to wire each furnace thermostat to one of the 4 Station channels, that is, one-for-one. Is that how it works?

    (And then, of course, I'll associate an indoor unit (4 different) to each of those Station channels.)

    Thank you,

    Patrick
  • GWGW Posts: 3,488Member
    Patrick, this is semi technical, the station has 4 'switches'. the kumos/station would basically handle the 'switching' between the heat pump(s) and the furnace zone(s). In this case, you would turn down (or remove) the old stats you have now (I never remove the old stats). So, there is a parallel wiring thing going on. The wiring is basic but the initiation is a pain. This is not easy to set up, the first time i did this i had to talk to Mitsubishi on the phone at some length. I can't type a huge thing on how to do this. Does your Mitsubishi people know what to do?
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
  • PatrickMPatrickM Posts: 3Member
    @GW Thanks for your response. And, yes, I get the whole concept about the station handling the switch over between the heat pumps and the boiler. Also, I know that once the station is connected, the heat demand will be solely from the heat pumps, not from the boiler stats.

    My question has to do with the wiring on the station to make this work. That is, since I have four boiler zones, will I have 4 wires each of which is connected to one of the station channels (aka switches)? That is, with four boiler thermostat controls I'll have all of the 4 station switches wired up to accommodate the 4 boiler thermostat controls?

    Or, do all the boiler zone wires get wired into only one station switch? I've tried looking at everything I can find online and this particular question is not directly answered, as far as I can see. (and that could be that documents I'm looking at are targeted towards the pros (you) and not the layperson.

    I'm asking because the group that installed my system is not very experienced in the new(ish) Mitsu station, and they are also trying to get the information as well.

    Thank you.

    Patrick
  • GWGW Posts: 3,488Member
    edited January 8
    Patrick, yes, in that case I would run an eight wire thermostat over to the Kumo from the zone control. as you know, each zone has its own two wires.
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
  • GWGW Posts: 3,488Member
    Himmm I guess I hit send, I wasn’t done yet

    I never touch the original thermostat wiring. That stays as is. I recommend simply turning down the original thermostats. They kind of act as a safety mechanism. I certainly am not going to remove the thermostats, and rely solely on the Kumo set up.

    Setting it up is a bit of a pain. DIP switch five needs to be turned on, you need to power off the station then back on. Then you need to get the Kumo app to talk to the station. Then you need to set up the parameters on the Kumo app. it’s a bit of a dog and pony show to get it to work. But once it’s on, it’s good to go.

    You’re in Massachusetts I take it? I’m not sure if other states have the crazy rebates we have in mass

    Gary
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
  • PatrickMPatrickM Posts: 3Member
    @GW Thanks again. And, yes, I am in MA - the only way I could do this project is with the rebates!

    Not touching the original thermostat wires is a great tip. That makes perfect sense, especially as the Kumo Station is new and I'd like to avoid a single point of failure if I can.
  • GWGW Posts: 3,488Member
    Rebates are wild, looks like 2020 will be the same as 2019. Amazes me how much dough the MassSave program is shelling out
    Gary Wilson
    Wilson Services, Inc
    Northampton, MA
    www.wilsonph.com
    [email protected]
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