Combi- Core

Paul Pollets

While the tank may run up to 180, design temps should not exceed 140-150. If you're trying to heat baseboard or radiators, consider a boiler, not the Combicor. The Combicor is designed for low temp (RFH) loads. Using the appliance at high temps will greatly shorten its life expectancy. These tanks are not as efficient as a boiler, by any means.

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Sweet_3

Supply temps

Is the combi core able to produce supply temps of 180* on it's heating side? Thanks

Sweet_3

Thankyou

Am doing heat loss calc and baseboard install for customer. They are fighting tooth and nail to try and avoid expense of boiler. That's what I suspected, it's either the boiler or another contractor. Appreciate the info.

Paul Pollets

Options

The Munchkin and SuperStor would be the budget alternative??

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Sweet_3

Paul

Not real versed on condensers, Got a few Ultra's in and seem to be working well. The Munchkin's yearly maintenance, is it an issue?? not trying to imply anything, just want to know what to inform customer of for yearly expense Thank's

Paul Pollets

Take the Class..

Take the Vision 1 class for certification. The boiler is very simple and easy to work on. More for condensing loads (radiant) but it will work at higher temps. Very easy to maintain and set up.

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Sweet_3

Appreciate it

I'll do that.

Joe Brix

Pricer but probably still cheaper

then a boiler and WH and will save space: Phase III's Elite gas fired combo. The inner stainless steel water tank can take the heat better then the combo WH's with a PEX coil HX.

hr

Or a

Polaris with a flat plate HX for the radiant. Small footprint and you get DHW with radiant at high efficiencies.

Voyager is another option with an intergral HX for radiant.

I doubt that you will get much over 160 from a CombiCor,on the coil side, and yoiu will have very hot DHW! And horrendous (sp) pressure drop at higher flow rates!

State, and maybe AO Smith offer a basic high recovery WH with a flat plate HX option.

Danfoss and others offer HW tank HX packages also.

hot rod

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Sweet_3

hot rod

This will be a Baseboard system with 31000 btu heat loss @ 180 temps. I could probably add more BB to lower my design temps but space is a concern anyother idea's?? Thanks

hr

Depends on priorities!

Be nice to run both DHW and heating below 150 to take advantage of condensing equipment efficiencies. Yeah, I would design the baseboard at lower temperatures (more board) to allow some fudge factor.

What about a fan convector like a kick space heater or a wall mount kit for one? Lot more output bang for your bucks with a forced convection. Probably get you into lower supply temperatures, also.

hot rod

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Keith Holdsworth

Combi-Core Alternative

I've used the Combi-Core with a total radiant package, and have been satisfied with the results. If you have high temp zones and are looking for space saving alternatives; look into the new Triangle Tube Prestige boiler. The current model is rated at 30,000 to 110,000 BTU (modulating gas valve off outdoor reset). They have higher BTU output models coming in the fall. If you also need to supply DHW in a small mech room; look into a ceiling mounted tank.