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Details about  HS TARM MB 75 180,000 BTU Wood & Coal Boiler / furnace.

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HS TARM MB 75 180,000 BTU Wood & Coal Boiler / furnace.
Item Sold
Item condition:
Dec 12, 2013 08:57:20 PST
Winning bid:
US $1,995.00
2 bids ]
Will ship to United States. Read item description or contact seller for shipping options. | See details
Item location:
Hinsdale, New Hampshire, United States


eBay item number:
Seller assumes all responsibility for this listing.
Last updated on  Dec 10, 2013 08:23:30 PST  View all revisions

Item specifics

Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully ... Read moreabout the condition

HS Tarm

Country of Manufacture:



MB 75

HS Tarm model MB75 180,000 BTU Wood & Coal boiler.

General Information
The HS Tarm Type MB-Solo is a new multipurpose boiler for hot water heating systems. Installed as a solid fuel fired boiler in combination with an existing oil or gas fired boiler, it allows you to heat your entire house and tap water by burning wood or coal. At your discretion, solid fuel may be relied upon to supply all your home's heat or merely part of it. If the fire should die down or be allowed to go out, automatic controls will activate the oil or gas burner on your present boiler to guarantee uninterrupted heat. The MB-Solo's firebox is of generous size, with large cast-iron doors to facilitate wood loading and ash removal. The wood fire is controlled by a non-electric automatic draft regulator, which will safely maintain boiler temperature even during power failures.
Because the MB-Solo gives you the option of substituting firewood for costly commercial fuel, it makes possible dramatic reductions in fuel costs. And because it ends your absolute dependence on oil or gas, it provides security against shortage of these increasingly scarce fuels.


The MB-Solo's firebox employs a base-burning arrangement which maximizes efficiency of solid-fuel combustion. As wood or coal is heated in any fire, it emits compounds, which, when burned, yield heat. When these compounds are not burned. they can represent a significant loss of efficiency. They can also produce soot or creosote, a tar-like deposit formed by the condensation of some flue gases when they are cooled. The MB-Solo's base-burning principle encourages burning of these compounds. The smoke leaves the boiler at the lower rear of the firebox, where flammable gases are drawn over the fire's hot coals. Additional air to aid in the combustion of these gases is provided by the air inlet in the upper door of the firebox and by the secondary air dial on the right side of the boiler. This secondary air dial meters air to a manifold at the bottom rear of the firebox. The manifold preheats and injects this air into the hot gases leaving the firebox, enabling secondary combustion of otherwise unburned compounds in these gases to occur. The firebox is surrounded by water on all sides and the bottom. This "wet-base" design allows for greater heat transfer, helping the MB-Solo to burn wood, coal, oil or gas with a high degree of thermal efficiency. Due to the fact that the firebox is surrounded by water, the firebox walls are maintained at a relatively cool (200° F.) temperature. The low temperature of these walls precludes the use of wood with more than 20% moisture content. Use of such "green wood" will result in poor burning and excessive formation of creosote and soot. Well-seasoned wood is required for proper boiler operation.

This unit is designed for a hot water heating system. It can be used in a forced hot air system by installing a hot water heat exchanger coil in the heating ducts.
This boiler can also be used as a pool heater when used with a heat exchanger available from other sellers on ebay.

This boiler was designed to be installed indoors, but can be put in a small shed for outdoor use if desired.

The fire box is 27.5" long, 15.5" wide & 26" high.

The outside dimensions are 51" tall, 43" long & 21" wide.

The weight is approximately 1200 lbs.

The water capacity is 55 gallons.

The firebox capacity is 7.1 cubic ft.

Flue size is 8"

This boiler was manufactured in 1979

This boiler does not have a domestic coil installed for heating tap water, but does have the facilities to accept a coil.

This boiler is equipped with cast iron grates for burning wood. Shaker grates & coal baffle available if needed.

This boiler is in excellent condition & has been cleaned inspected & pressure tested.

If you buy it now I will include a circulator pump, & aquastat.

I  can load it in your truck or trailer for you, or ship it to you by truck.

Use the shipping calculator found on the shipping & payments tab to determine shipping cost and add 10% to cover ebay fees on shipping cost.

Please add $50 to cover cost of prepping the boiler for shipping and $40 to insure the shipment against damage.

Cash payment upon pickup is preferred. PayPal and major credit cards are accepted.

I may end this listing early as this item is for sale locally. If you are interested in this boiler, bid early.
Once a bid has been received the auction will continue and the boiler will be sold to the highest bidder.

Feel free to call if you have any questions at 603-336-5100. I am generally available Monday - Friday 8am-5pm eastern time.

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