Looking for some heating advice (non traditional system)
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  1. #1

    Looking for some heating advice (non traditional system)

    Hi everyone,

    New to the forums, so far I've seen some good information going around, so I thought I'd get ideas from everyone. I have a Crown Cayman propane boiler, with tankless coil for domestic. In addition to this system I have a Woodmaster 4400 outdoor wood boiler which basically "preheats" the water entering the Crown unit. The Woodmaster system enters the home and goes through a plate to plate heat exchanger which circulates to the Crown unit as an additional zone, utilizing a Taco 0011 circulator. The house consists of 7 zones, 2 of which are in slab radiant, one never is turned on (basement) and the other is currently set low (45 degrees) in a garage using a standard digital thermostat (air temp). Two zones are radiant under hardwood and tile, both also on digital thermostats. The other three zones are second story heating, all on baseboard. The hi and lo settings on the Crown are set to 150 and 140 respectively, as I am trying to keep the gas unit from firing as much as possible. The unit still does fire more often than I like, which is why I'm here, looking for advice on how to make this system more efficient. I'm glad to give more info if needed! Thanks in advance for the help!

  2. #2
    Join Date
    Oct 2010
    Location
    Anderson, South Carolina, United States
    Posts
    6,240
    Have a contractor come do a combustion analysis of the boiler, it may be underfiring or your plate-plate hx may be clogged not transferring all the heat. Find a good oil/boiler tech to come out and do a thorough inspection and get your system running at peak efficiency.

  3. #3
    I had a minor service last year and ended up replacing and re-plumbing the plate to plate hx with a larger model due to it being solidly plugged and undersized.(bought the house last year, already had system existing) thanks for the advice, I'll see what I can find for a tech nearby, it's been hard to find someone familiar with propane and solid fuel systems.

  4. #4
    Join Date
    Oct 2010
    Location
    Anderson, South Carolina, United States
    Posts
    6,240
    Yea, it takes a special tech/company to work in stuff like that. In my county we are about the only company that service/install boilers. I don't understand why bc they are pretty simple compared to the new technology.

  5. #5
    They are simple as units themselves, its the integration with the "regular" home system that I've struggled with. I haven't decided if I am transferring the heat from outside to inside most efficiently.

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