KOŁTON Buffer Tanks – Series B
KOŁTON offers customers top-quality B-series tanks with capacities of 300, 500, 750, and 1000 liters, designed for storing hot central heating water.
The B-series tanks are engineered to work with various heat sources, including heat pumps, pellet boilers, gas boilers, electric heaters, and more. They are dedicated to KOŁTON heat pumps as well as hybrid systems that combine more than one heat source. They are suitable for complex and extensive installations, where in addition to storing heat, they also function as a hydraulic separator. They feature thermal insulation with excellent performance, two connections for an electric heater allowing installation from the front or back of the tank, flow directors that ensure proper thermal stratification within the tank, and a factory-installed solution enabling the connection of up to 12 temperature sensors at 4 different heights of the tank.
B-series tanks store heat in the water circulating in the central heating system. Water heated by the heat source is accumulated in the tank for further distribution to heat emitters (underfloor heating, convector radiators, fan coils, etc.).
Buffer with pellet or wood boiler
When operating with a solid fuel heat source, the role of the buffer tank is to store excess heat to ensure high efficiency of the heating device and to minimize boiler cycling. The tank also functions as a hydraulic separator.
Buffer with heat pump
When the tank operates in a system with a heat pump, its primary role is to ensure a minimum compressor runtime, thereby reducing the risk of heat pump failure. The tank acts as a buffer and provides the thermal energy needed to properly carry out the heat pump’s evaporator defrost process without the use of an electric heater. The buffer tank also stabilizes the temperature of the outgoing water to the installation when the heat pump switches to the domestic hot water heating cycle.
Tank without flow directors / Tank with standard flow director
Tank with proprietary flow director developed by KOŁTON
An innovative feature of KOŁTON tanks is the use of specially designed flow directors for the heating water. These directors set the heating water into a swirling motion from the top of the tank, minimizing vertical water movement inside the tank. This solution ensures optimal temperature stratification of the water in the tank from top to bottom. It minimizes mixing within the tank, which positively affects the efficiency of heat pumps, reduces the number of heating cycles required by the heat pump, and ensures maximum performance.
FLOW DIRECTORS
Thanks to computer modeling, we have proven that our proposed flow directors maintain superior water stratification compared to standard buffer tanks without directors or with top-mounted directors.
- Temperature stratification
- No vertical mixing
- Maximum efficiency in heat pump systems
Key Features of B-series Tanks
- The special design of the flow directors ensures water stratification and minimizes water mixing within the tank.
- The tank has 10 connection ports for heat sources and heat emitters.
- The tank is equipped with 2 connections for an electric heater, allowing installation of a heater cooperating with a heat pump from both the front and the back.
- The tank has 12 sensor locations at 4 different heights, eliminating the problem of insufficient space for sensors of additional heat sources or controllers.
- Insulation with a special insulating mat provides excellent thermal properties. The external insulation is removable, facilitating transport in narrow spaces.
Operating Conditions
B-series tanks with capacities of 300, 500, 750, and 1000 liters can operate at temperatures up to 85°C (when supplied by a pellet boiler) and at a maximum working pressure of 3 bar in the central heating system. The water pressure in the coil for domestic hot water is a maximum of 6 bar.
How to Choose the Right Buffer Tank
Selecting the right buffer tank is crucial for the efficiency of the entire heating system in a building. The choice of tank capacity depends on the energy demand of the property. This means that for larger homes using higher-power heating devices, it is necessary to install a tank with a larger capacity. Thanks to their high versatility – boilers and buffers can work with central heating boilers, heat pumps, and solar collectors – installing a tank is a cost-effective investment that helps save on heating and reduce heat energy losses.
Parameters
300 500 750 1000Tank
Dimensions
300 l 500 l 750 l 1000 lDimension
Connection to the water supply system
The connection to the water supply system must be carried out in accordance with PN-76/B-02440.
If the pressure in the water supply system exceeds 0.6 MPa, a pressure reducer must be installed upstream of the tank.
A check valve must be installed on the water supply side to prevent backflow from the tank.
A tee with a safety group, including an expansion vessel and a safety valve with an opening pressure of 0.6 MPa (the safety valve must be matched to the power of the heat source), should be installed on the inlet for cold domestic water.
No shut-off valve or flow-restricting element may be installed between the tank and the safety valve, or on its outlet. The safety valve must be installed so that any water discharge is clearly visible.
The heat exchanger with the installed safety valve must be connected to the water supply system.
A shut-off valve must be installed on the cold water inlet.
The domestic hot water outlet must be connected to the fitting located at the top of the heat exchanger.
Warranty conditions
KOŁTON sp. K., headquartered in Jabłonka, ul. Sosnowa 2, 34-480 Jabłonka, as the manufacturer of B and BW buffer tanks, grants the purchaser a product quality warranty for a period of 36 months, counting from the date of sale.
The purchaser is obliged to:
- Have the device installed by a qualified installer;
- Strictly follow the operating and installation instructions;
- Notify the factory service of any defect in the device within 7 days of its detection.
Failure to meet the above obligations results in the loss of the warranty.
In the event of a defect or malfunction, the manufacturer decides on the method of its repair or the replacement of the device. The warranty covers only defects arising from causes inherent to the device itself. Warranty repairs are free of charge.
The manufacturer will fulfill warranty obligations immediately after the defect is reported to an authorized service point, but no later than 30 days from the report. A prerequisite for performing warranty service is possession of this warranty card and proof of purchase.
The manufacturer may refuse to perform warranty repairs if there is no free access to the device being claimed.
The warranty applies only to products purchased and used within the territory of Poland.
The granted warranty does not exclude or limit the purchaser’s rights arising from statutory liability for physical defects.
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