CONVERT your old COMBO I UNIT to match the newly manufactured COMBO II CORN MULTIFUEL FORCED-AIR FURNACE BOILER, which is a factory update that adds a Secondary Heat Exchanger in the form of a WATER JACKET. This Secondary Heat Exchanger will add around 25,000 BTU/Hr to your existing Combo Unit. This COMB II has a NEW Secondary Heating Chamber (water jacket) welded by the factory right in front of the Primary Exchanger Coils now in COMBO I. Act NOW before the heating season kicks into gear, get it swapped out.There has to be more than 12 hours left in the listing. FEATURES of the NEW COMBO II.
A New WATER JACKET is added to the front of your old unit. It should boost your BTU Output of your hot water heating capability by 25,000 BTU/Hr.
If you are heating your home now with the old COMBO I unit, then we highly recommend you make this conversion. You can also boost your boiler heating capacity and reduce the number of times your boiler fires up. For those installations planning to boost your boiler heat, we recommend hooking both the COMBO I hot water coils and the COMBO II Water Jacket in series with the boiler. The Combo II has a NEW SECONDARY Heat Exchanger and is an upgraded model from the old Combo I.
This secondary heat exchanger is highly recommended and we do not sell them as a "boiler booster" without it. You still use the COMBO I Coil but it is just hooked in series with the COMBO II Water jacket (see second photo). The heated hot water output line from the corn furnace should input to the cold water return to the boiler right before the boiler circulating pump. Your main boiler circulating pump will pump the hot corn-furnace water through the boiler to the individual rooms (circuts), and return back to the corn furnace input line. Your boiler will have to work less because it is getting hot water fed to it from the corn furnace.
The burn times on your boiler should be reduced, if not completely eliminated, thus saving gas/oil energy. If your Combo unit hot water line is hooked in series with your boiler, then you will not have to duplicate boiler accessory components such as pressure relief valves, automatic air vent, circulating pump, expansion tank, fill valve, RPZ valve, etc. You should however install pressure/temperature gages in the water supply and return lines to the corn furnace in order to monitor the performance, install an automatic air vent at the highest point in the water line, and install an acqua-stat on the hot water side to eliminate over-heating. The acqua-stat will eliminate over-heating on the heated hot-water coil from the Combo unit by turning the circulating pump on when the temperature rises to a preset level, e.
10 Degrees above the boiler temperature level, such as 180 Degrees Fahr. The Aquastat can also turn zone valve(s) on to the coldest room(s) in the house. It is recommended installations be done by a licensed Plumber/HVAC company. Th e parties waive any other venue to which either party might be entitled by domicile or otherwise.
The Secondary Hot Water Jacket will add and extimated 25,000 BTU/Hr to the hot water heating capability of your COMBO Unit and essentially converts it to a COMBO II Unit. / Safety Tested, EPA Exempt, UL Approved MH45411, ULC/ORD- C 1482, (UM) 84-HUD. One three one nine two nine eight zero five zero zero. The item "COMBO II ADD SECONDARY HEAT EXCHANGER (Hot-Water Jacket)" is in sale since Saturday, July 11, 2009. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Central Heating & Cooling Systems\Central Furnaces".
The seller is "cornstoveiowa" and is located in Cedar Rapids, Iowa. This item can be shipped worldwide.