[Greenbuilding] Radiant heat boiler--heat exchanger for tinybuildings/families?

[Alchemy Construction Inc]

I keep Hearing about this new Bosch's boiler,  but i have not seen nor 
herd what it will do.
I recently attended a Noritz training.  They are coming out with a 
boiler,  but it's 82% efficient and does not condense.
I wonder if the Bosch will modulate and condense and what price it will 
sell for?



-- 
Stephen Bohner
Alchemy Construction Inc.
www.alchemyinc.com
707-822-8013




wmdorsett at sbcglobal.net wrote:
> Steve, thanks  for your advbice. A good friend who's been in the business
> for a very long time just told me that his house needs a new boiler so he
> called his supplier who said that if he can nurse it along for a few months,
> that Bosch was coming out with an extraordinary boiler.
>
> Bill Dorsett
> Sunwrights
> Manhattan, KS
>
> ----- Original Message -----
> From: Steve Holt <Steve.Holt at enbridge.com>
> To: Carmine Vasile <gfx-ch at msn.com>
> Cc: <greenbuilding at listserv.repp.org>; <niko at oharagercke.com>;
> <LLile at projsolco.com>
> Sent: Monday, February 12, 2007 10:06 AM
> Subject: Re: [Greenbuilding] Radiant heat boiler--heat exchanger for
> tinybuildings/families?
>
>
>   
>> I enjoy reading many threads and occasional reply.  I have been involved
>> hydronic heating systems for many years in Canada, and I have seen what
>> works and what doesn't. 30 years of hands on service and installations
>> give me some insight into HVAC.
>>
>> Niko from Alchemyinc makes a lot of sense.
>>
>>  Multiple tankless units  at point of use makes sense in an very large
>> home with excessive piping runs to each fixture. However this is not a
>> what I would recommend or install.  Primarily, it is very difficult, or
>> not practical to do, these installations often leaves the equipment very
>> unserviceable. ( building asthetics  are the killer here) Todays high tech
>> equipment demands more service and it must be accessible.
>>
>> >From a serviceability and practical perspective, I always recommend a
>> separate heating and hot water systems. Yes, I will sacrifice some
>> efficiency in the name of redundancy and reliability. I will also justify
>> the cost of mechanical equipment, on the cost of the home. A $500,000 home
>> is worthy of a $40,000 HVAC system.
>>
>> I also only recommend what I would or do, or use in my own home. My
>> choices are based on equipment I have serviced, and on equipment I have
>> seen fail prematurely.
>>
>> Viessemenn Vitodens is the top of my list for radiant floor heating,
>> however a very close second is the Weil McLain Ultra.  ( Price point and
>> simplicity moves me to choose the Ultra ) . Both of these boilers will
>> provide many years of reliable heat for any family. These are two pipe
>> systems, and the combustion process will not affect the building envelope.
>> Plumbing, controls, pumps and setup are key. Experienced HVAC Techs are a
>> must, and they require a strong plumbing background.  ITT (Bell and
>> Gossett owns the bible of hot water heating.) Ask anyone who has attended
>> the little red school house.
>>
>> On to hot water, my choice ( Tankless, Takagi,  Rheem, Rinnai ) all good
>> products. Again pick the two pipe modules. In larger homes, with very long
>> piping runs, pipe in a domestic hot water recirculation line, ( well
>> insulated ) and install a small circulator pump that cycles on a time /
>> temperature schedule that meet the customers needs. ( Taco has some
>> answers for re circulation problems ) I normally will install multiple
>> units to meet larger hot water demands. Sometimes the addition of storage
>> or a buffer tanks is a must for some hot water hogs. Pre heat your
>> domestic hot water if possible, and you have a very reliable system.    (
>> AO Smith wrote the DHW bible )
>>
>> A great technician and a good engineer are an unbeatable team for your
>> infloor needs. If you go with the lowest cost, you most likely, will be
>> sorry.
>>
>> Two cents from a somewhat green and practical guy.
>>
>> Steve Holt
>> 416-574-6523
>>
>>     
>