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The Harman Stove are one of the industry leads in the US for wood pellet stoves, however they have we not a key player in the wood pellet boiler market. Yet Harman have now developed the PB105 wood pellet boiler. The PB105 shares many of the same features as the award winning Harman pellet stoves. These features include automatic temperature control and automatic ignition, burn pot along with also automated pellet pro feeder. Good access to the burn pot is another benefit, access to the in built hopper is also convenient, with a hopper storage capacity of 205lbs, which is accompanied by means of a large ash bin. All these features mean the PB105 will be a more fuel adaptable as well as reliable wood pellet boiler. The maximum heat out of the boiler is just below 14 million Btu’s. This means the unit can provide heat for a space of 2,500 sq.ft, along with has a incineration and heat recovery efficiency of 85% which is also very impressive.

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The PB105 uses a 4 inch flue plus also has a three stage warmth exchanger to capture as much warmth as possible. The unit has a viewing window into the combustion chamber which is also the access point for the burn pot. The biomass pellet boiler also has an insulated water jacket to reduce warmth loss. The units operates on 120v along with has a fuse rating of 6A. To meet fire safety regulations the pellet boiler must be clearance around the back of the boiler of 6 inches, by way of 20 inches of clearance on both sides of the PB105, as well as 36 inches at the front. There are various additional options extras that can be fitted. These include an outside air temperature sensor, which can be very useful to investigate the efficiency of abode lagging, as well as also view the load on the boiler. Boiler pressure gauge in addition to pressure relief values should be options to choose. Extra options include water temperature gauge plus boiler water drain off value. The PB105 is designed well, but time will tell if Harman will dominate the US wood pellet boiler market the same way they at present dominate pellet stoves.

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From the appearance of pellet fuel, pretty much all types of pellet look the same. Extra than slight changes in colour, owing to the production process the pellets have the same size, shape as well as density. This means pretty much any pellet can be put in a hopper in any pellet stove or pellet boiler, as well as the pellets will be fed into the burn pot. Yet, here is where the similarity ends, as due to the pellet manufacture process makes diverse wood fuels appear the same, their combustion characteristics are very very dissimilar. For case in point, all pellet stoves in addition to boiler are primarily designed to burn premium pellets, which make an ash content of 0.5%. Yet different types of biomass fuel may manufacture an ash content from 1% up to around 7%, and increased ash content is not the only difference. Some pellet fuels produce ash which melts at lower temperatures, for case straw pellets. Melting ash forms into a material called a clinker. Even wood pellets can actually form clinkers due to the intense heat that a pellet fire can generate. Some pellet stoves along with boilers cannot deal by means of clinkers.

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