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Maine Outdoor Wood Boilers
  • Outdoor Wood Stoves
    • Pristine Series
    • Multi Pass Series
    • Biomass Series
  • Accessories
    • Underground Pipes
    • Heat Exchangers
    • Circulator Pumps
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MultiPass Wood Boiler Outdoor

TRIPLE PASS WATER FILLED HEAT EXCHANGER

The triple pass water filled heat exchanger was developed to allow for better heat transfer and higher efficiency than conventional units. The heat exchanger is strategically placed within the water jacket which increases the heat recovery when compared to the Shaker Grate Series.

The Multi Pass Series features a Heat Exchanger Cleanout Door, accessible from the front of the outdoor furnace, for ease of cleaning fly ash.

SHAKER GRATES & ASH PAN

The Multi Pass series features our Original Cast Iron Shaker Grate & Ash Pan system. Our Shaker Grates aid in the optimization of air flow under the fire, while at the same time allowing the owner to quickly shake out excess ash without the use of special tools. The ash is collected in the provided extra large, removable, ash pan, making cleaning and disposal extremely easy. Just like the Firebox Door, the Ash Pan Door features our double safety latch handle.

Air Blower Control Panel

ADJUSTABLE PRIMARY AIR BLOWER

The introduction of combustion air under the Shaker Grates assists in increasing the fire temperatures, making the burn more efficient and cleaner compared to other conventional units on the market. The Adjustable Primary Air Blower ensures there is always the proper amount of air flow inside the firebox at all times, no matter the type of fuel being burned. The combustion air is controlled by a variable speed nob, conveniently located on the Control Panel.

Insulated Firebox Door

EXTRA LARGE, INSULATED, FIREBOX DOOR

We designed the Multi Pass Series of outdoor furnaces to feature an extra large firebox door, placed at the optimal height for care free loading. Safety is at the core of everything we develop which is why all of our firebox doors have multiple layers of insulation and are equipped with our signature double safety latch handle system.

Maine Multi Pass Wood Boilers

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  • 7200MP
  • 7300MP
  • 7400MP
  • 7500MP
7200MP
Estimated Weight1,400 Lbs
Width47 1/2″
Length62″
Height81″
Firebox Length30″
Chimney Size6″
Door Size20″ x 20″
Supply Size1 – 1 1/4″
Return Size1 – 1 1/4″
Water Capacity140 Gallons
Fan Capacity150 CFM
Turbo Fan:60 CFM
Approximate Sq Ft.2,000 – 3,000
Approximate BTU’s165,000
Insulation Roof/WallsR30
409 Stainless SteelYes
Domestic Coil 300,000 BTUOptional
7300MP
Estimated Weight1,800 Lbs
Width52″
Length68″
Height87″
Firebox Length38″
Chimney Size6″
Door Size20″ x 20″
Supply Size2 – 1 1/4″
Return Size2 – 1 1/4″
Water Capacity180 Gallons
Fan Capacity150 CFM
Turbo Fan60CFM
Approximate Sq Ft.4,000 – 6,000
Approximate BTU’s275,000
Insulation Roof/WallsR30
409 Stainless SteelYes
Domestic Coil 300,000 BTUOptional
7400MP
Estimated Weight2,500 Lbs
Width60″
Length72″
Height97″
Firebox Length48″
Chimney Size8″
Door Size24″ x 24″
Supply Size2 – 1 1/4″
Return Size2 – 1 1/4″
Water Capacity320 Gallons
Fan Capacity150 CFM
Turbo Fan60 CFM
Approximate Sq Ft.8,000 – 10,000
Approximate BTU’s400,000
Insulation Roof/WallsR30
409 Stainless SteelYes
Domestic Coil 300,000 BTUOptional
7500MP
Estimated Weight5,000 Lbs
Width89″
Length99″
Height110″
Firebox Length60″
Chimney Size10″
Door Size42″ x 30″
Supply Size4 – 1 1/4″
Return Size4 – 1 1/4″
Water Capacity600 Gallons
Fan Capacity300 CFM
Turbo Fan60 CFM
Approximate Sq Ft.18,000 – 20,000
Approximate BTU’s750,000
Insulation Roof/WallsR30
409 Stainless SteelYes
Domestic Coil 300,000 BTUOptional

Multi Pass Series Specifications

Maine Wood Boiler Multi Pass Cutaway
  1. FIREBOX DOOR
    Extra large, insulated door for easy fuel loading. Equipped with our signature double safety latch handle system.
  2. ASH PAN DOOR
    Easy access for removal and cleaning of ash via the ash pan. Features a double safety latch handle.
  3. HEAT EXCHANGER CLEANOUT DOOR
    Easy access for cleaning fly ash. Features a double safety latch handle.
  4. CAST IRON GRATES
    Designed to ensure a complete burn of your fuel, assisting in the removal of ash.
  5. ASH PAN
    Extra large removable ash pan for easy cleaning.
  6. TURBO DRAFT SYSTEM & BLOWER
    Introduces air above the flame, forcing secondary gases downward to be burned before escaping out the furnace chimney.
  7. TRIPLE PASS WATER FILLED HEAT EXCHANGER
    Developed for a better heat transfer and higher efficiency than conventional units.
  8. PRIMARY COMBUSTION AIR BLOWER
    Introduction of combustion air under the shaker grates giving a hotter and cleaner burn.
  9. STAINLESS STEEL FLUE
    Class A Insulated Chimney.
Best Way Wood Heat Maine

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