Multifuel Stove With Back Boiler
A multifuel stove with a back boiler can heat radiators as well as heating hot water for the property. This can reduce heating costs.
Installing a wood burning stove with a built-in back boiler to an existing central heating system is relatively easy and can be completed by a skilled plumbing engineer. This article explains how.
Features
When a stove has a boiler, the heat produced by burning wood or another fuel is used to heat hot water in a cylindrical device and to warm the space. A boiler stove is also able to provide heat to radiators in the home. We have a broad selection of multifuel stoves with back boilers. All come with full manufacturer warranties.
A typical wood burner pumps heat in one direction as it moves from the firebox through a flue outlet. A multifuel stove equipped with back boilers will produce more energy as the heat is distributed over several directions in a more efficient way. This means that more heat is directed to the room and less heat is wasted through an outlet for the flue.
Once the heat from a multifuel woodburning stove that has a back boiler is used to warm the space, it is possible for this heat to be transferred to other areas in the property through an insulated pipe loop. This can result in the heating of hot water cylinders or radiators, or even a non-pressurised shower. Typically a thermostat would be installed to keep track of the temperature of the hot water tank and turn on the radiators' pumps when the temperature is at a certain point. This prevents hot water from running out and ensures the hot water cylinder is able to provide an uninterrupted supply of hot water available for domestic use.
The CSB multifuel stove with back boiler has an impressive output of 21kw and can power a complete home using the central heating system or even a domestic hot water cylinder. The CSB is a multi-purpose stove that can burn wood logs, anthracite, brquettes, and smokeless fuel. It can be used as a stand-alone wood burner, heated by thermosyphon. The CSB works with closed and open system central heating systems (not compatible with pressurised systems). A CSB is usually supplied with the thermal store made of stainless steel or neutraliser tank.
Fuel type
The difference between a multi-fuel stove and the boiler stove is that the latter comes with an inbuilt water tank which can heat the hot water in your home and even radiators. This feature makes boiler stoves a popular choice for environmentally-conscious homeowners who want to reduce their reliance on gas, oil or electricity.
The main kind of multifuel stove that has a back boiler is the wraparound stove, which has a water tank that runs through the sides and the back of the firebox. This means that the boiler part of the stove effectively fits the firebox, thereby maximising heating efficiency and power output. Wraparound boiler stoves are available from a variety of top manufacturers, including Stratford and Hunter Stoves.
Another option is the clip-in stove, which features the water tank, which replaces the firebricks located at the rear of the stove's firebox. These stoves are not able to produce large amounts of hot water because the boiler tank is smaller than an open-air stove.
It is possible to install a multifuel stove with an back boiler within your system in several ways, but the most common method is to pipe it as an element of a vented heating system. The boiler stove can be used as an additional source of heat by turning on when the gas central heating is on.
Installing a wood-burning fireplace with the boiler back is possible by connecting it to a multi coil hot water tank or heat accumulator. In this scenario the stove will warm your hot water tank and then send it to your radiators using the thermostatic control valve. This is a more complicated installation procedure and should only be done by a qualified heating engineer.
A multifuel stove that has a rear burner that is not properly installed can be dangerous. This is because, when the stove is used and the water inside the boiler turns into steam, which could cause the system to explode if it's not properly vented.
Fuel supply
The heat from the stove's combustion is transferred to a water tank through a boiler unit that is located in the back of the stove. You can utilize the heat in your home to lower carbon emissions and energy costs. This makes the stove more energy efficient, as heat is not lost through the chimney. This type of stove is also referred to as a back boiler or wetback stove.
Modern multifuel stoves with a back boiler feature hot water cylinders with the heating unit built into the body of the appliance. This lets you connect the stove to your domestic hot water system and make use of it to heat the taps and radiators in the house. Some older boiler stoves include an additional hot-water cylinder or the boiler may be mounted in a removable box that can be positioned over the fire chamber.
More Bonuses has a large firebox, with an enormous ceramic window as well as an "advanced air wash system" to maintain the view. The large stove also has both top and bottom (Primary and Secondary) air vents that allow easy and effective control of the burn rate and heat output. The chrome door handle as well as air controls give a stylish appearance to the stove.
A thermostatic probe connected to the stove opens and closes an additional vent at the back of the stove when it requires more air. This improves air flow through the heat exchanger, which boosts the output of a room temperature.
The models of the 'Elegance B' come with 4 water ports (2 flow and 2 return) at the rear of the stove. These can be shut off if only one water heating circuit is required. If plumbed correctly the stoves can heat up to 10 radiators in average size, as well as the domestic hot-water system.
We have a huge range of wood burners that come with back boilers that are available from the leading manufacturers in the UK. We also stock a wide range of boiler stoves, thermal stores and pumps for these models.
Installation
There are several ways to connect a stove boiler to your central heating system. You can connect it to a combi boiler by using a special adaptor or you can install a thermal storage that will allow your wood burning stove to feed the hot water system on its own (this requires an additional header tank in the loft). It is also possible to prioritize the hot water by connecting the radiator loop and heat loss radiators to the stove through injector tees and feeding the hot water system from this. Another alternative is to utilize the thermopile thermostat to regulate the pump in the radiator loop so that the system only runs after the stove has heated the hot water tank and the heater is switched off.
Incorporating a wood burner that has a back boiler to an existing system can be fairly easy. It's dependent on the plumbing and system layout but most modern open vented systems are capable of connecting a boiler stove with very little upheaval or expense. It is recommended to consult an HETAS qualified person, a local plumber or installer who is knowledgeable about wet systems before installing multifuel stoves with back boiler.
A typical system would include a thermal store with an accumulator tank for hot water, and an electric woodburner with a back boiler in the firebox. The stove is connected to the system through one of the back boiler water ports which are measured at 1 inch BSP (British Standard Pipe) and can be easily converted to tubes of 22mm and 28mm using compression fittings available from most reputable plumbing merchants.
The thermal store is a large tank that holds large quantities of heat. It is also connected to the radiators as well as the stove via a system of pipes and tees. The loop of radiators is controlled by a thermostatic switch, which only allows heating to start once the hot water in the system has reached 55 degrees C.
The CSB multi-fuel wood burner that comes with back boiler is a popular option. It's a powerful stove that can power up to 10 radiators in your home. It can burn wood, peat, coal and smokeless fuel. The CSB can be combined with a supplementary heat source such as a log gasifier or biomass pellet boiler.