Considering Takagi

Michael B

we sell Tagaki as well as all kinds of boilers, water heaters, furnaces, etc. I am of the mindset that you want to use the right piece of equipment for the correct application. With the advancements in boiler technology today coupled with reset controls and indirect h20 capabilities I don't believe Takagi is the correct appliance for this application.

Michael Bleier
Able Distributors
www.abledistributors.com
"The Supplier That Works With You"

Rick Sierra

Hello,
I've been browsing around for a while and had a couple questions. I'm a new homeowner and am considering getting rid of the old (31yrs) Weil-Mclain oil fired boiler for a Takagi TK-2. The house is approximately 1100 square feet, two bedrooms, a single bathroom and runs a single loop to baseboards. There is nothing wrong with the boiler, except the age, oil bills, yearly cleaning, and maintenance contract. I was considering changing over to the Takagi TK-2 for DHW and heat. First question is that I've read on the Takagi website that you're DHW will be running through your heating pipes. I don't know if they have ever had any chemicals in the boiler. It just sounds kind of unsanitary but I guess it's all copper pipe. So is this advisable? Is this able to handle the heating and DHW for a house of this size? Should I just go with the TK-2 for the heating and get a seperate TK-1 or Aquastar for the DHW? Would all this be a wise decision or am I just being stupid and should just leave it alone until it breaks.
Thanks,
Rick Sierra

Scott25

DHW

To be honest I dont know very much about Takagi but you may want to recheck the part about DHW. Your DHW should never run through your heating pipes. Many people do heat the DHW with the heating boiler but it is done via a heat exchanger. The two systems (system fluid and DHW) are never allowed to touch.

Alan(CaliforniaRadiant)Forbes

You would

have to run the Takagi at 180* (via dip switch settings) for baseboard (BB) and then install a tempering valve to lower the water temperature down to 120* - 125* for domestic.

We've used Takagi's for radiant heating through a heat exchanger, but never for BB. There may be some issues that don't come to mind right now; call Takagi at (888)882-5244 and ask them.

Alan

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Steve Eayrs

Albeboy is right....

This is a water heater, not a boiler. Rinnai makes a unit similar to the tikagi. You can run both the Rinnai and the Tikagi (spelled wrong again?) hot enough to make them work for baseboards, or radiant heat, (I have done it) but neither one of these units will operate like a boiler. They have one set point they try to satisfy. A boiler (when hooked up right) has a high and low setting that it will maintain, which allows for a longer more efficient burn cycle. Thes water heater are designed for cold water in and hot water out. When you try to run them as boiler, you are asking for short in-efficient cycles, since they now only have only a delta T of 20 degs. max. or so.

Also you are right to be concerned about the dhw running through your boler system. Besides health concerns, lots of oxygen running through your system can eat away, at an otherwise good system. You would also have to use brass or stainless pumps, instead of cast iron.

Replace it with a good boiler, and do the dhw off an in-direct tank.

Steve

Joannie

Combined DHW/Space Heating

According to the ANSI water heater standard, the heater's instructions must have:

"A statement to the effect that a water heater which will be used to supply potable water shall not be connected to any heating system or component(s) previously used with a nonpotable water heating appliance."

So, it doesn't appear that you would be allowed to use a water heater in your existing system, since you've had a boiler (nonpotable water heating appliance) working in that system.

Joannie

Laars Heating Systems

Scott22

Rick
One word! Munchkin.

Michael B

if we are going to get

down to it..Viessmann with indirect. Clean, simple, integrated, ultra-eff. "system" approach to a very common situation.

Michael Bleier
Able Distributors
www.abledistributors.com
"The Supplier That Works With You"