


BUFFER TANK OKC250NTR / HP
Buffer OKC250NTR / HP
The Hewalex OKC 250 NTR/HP Buffer is designed for heating domestic hot water using a heat pump or other heat source with a reduced flow temperature.
The OKC 250 NTR/HP Buffer is standardly equipped with one heat exchanger (heating coil). The coil has a significantly larger heat dissipation surface compared to a heater of the same capacity, where one coil is designed for collaboration with a boiler. The larger surface area of the coil makes it possible to maintain the required heating capacity for heating domestic water at a lower flow temperature - in the range of 50-60°C. Favorable operating conditions are also guaranteed for low-temperature heat sources - a heat pump or a condensing boiler.
An additional optional heat source can be an electric heater - the heater allows installation in a separate 6/4" stub. An additional inspection opening with a diameter of 150 mm, built into the lower part of the heater, facilitates maintenance and allows the installation of any additional accessories.
The buffer is characterized by low heat losses thanks to the use of thermal insulation made of hard polyurethane foam with a thickness of 50 mm. The energy efficiency class "C" proves a very high standard in its class and size of heaters, while maintaining an optimal ratio between energy efficiency and purchase and operating costs.
The outer casing is made of hard plastic with increased resistance to dirt and mechanical damage. The internal surfaces of steel are covered with ceramic enamel to protect against corrosion. Additional protection is provided by the magnesium anode, which is supplied as standard with the heater. The buffer can be placed directly on the floor and leveled precisely thanks to the adjustable feet.
OVERVIEW OF FEATURES:
1 heating coil with a significantly larger heat dissipation surface
Design adapted to work with a reduced flow temperature (heat pump, condensing boiler)
The recommended ratio of exchanger surface to heat pump heating capacity is 0.2 m2 / kW (inverter compressor) or 0.3 m2 / kW (ON/OFF compressor)
Effective protection against corrosion thanks to the use of the Crystal Enamel® enamel surface
Optimal ratio between energy efficiency and purchase price and operating costs
Protective magnesium anode for additional protection of the internal surfaces of the heater
Limitation of heat losses to a minimum by using ThermoGen® hard polyurethane foam
Hard plastic housing, easy to keep clean
Thermometer on the heater housing for reading water temperature and controlling the heater
6/4" stub pipe for mounting an electric heater, for example for emergency heating of utility water
170 mm inspection opening in the lower part of the heater for maintenance or installation of additional elements
Adjustable feet for leveling the heater on the room floor
Favorable conditions of 5-year warranty
TECHNICAL DATA:
Diameter: 584 mm
Height: 1541 mm
Weight: 119 kg
Exchanger surface: 2.5 m2
Permissible working pressure: 10 bar
<p><strong>If products are out of stock, prices may change.
We will inform you of this in good time.<p><strong>

Product Information
Product information
Hewalex OKC250NTR / HP Buffer
The Hewalex OKC 250 NTR/HP Buffer is designed for heating domestic hot water using a heat pump or other heat source with a reduced flow temperature.
The OKC 250 NTR/HP Buffer comes standard with one heat exchanger (heating coil). The coil has a significantly larger heat dissipation surface compared to a heater of the same capacity where one coil is designed for use with a boiler. The larger surface of the coil makes it possible to maintain the required heating capacity for heating domestic water at a lower flow temperature - in the range of 50-60°C. Favorable operating conditions are also guaranteed for low-temperature heat sources - a heat pump or a condensing boiler.
An additional optional heat source can be an electric heater - the heater allows installation in a separate 6/4" stub. An additional inspection opening with a diameter of 150 mm, built into the lower part of the heater, facilitates maintenance and allows for the installation of any additional accessories.
The buffer is characterized by low heat losses thanks to the use of thermal insulation made of rigid polyurethane foam with a thickness of 50 mm. The energy efficiency class "C" proves a very high standard in its class and size of heaters, while maintaining an optimal balance between energy efficiency and purchase and operating costs.
The outer casing is made of hard plastic with increased resistance to dirt and mechanical damage. The internal steel surfaces are coated with ceramic enamel to protect against corrosion. Additional protection is provided by the magnesium anode, which is supplied as standard with the heater. The buffer can be placed directly on the floor and leveled precisely thanks to the adjustable feet.
OVERVIEW OF FEATURES:
1 heating coil with a significantly larger heat dissipation surface
Design adapted to work with a reduced flow temperature (heat pump, condensing boiler)
The recommended ratio of exchanger surface to heat pump heating power is 0.2 m2 / kW (inverter compressor) or 0.3 m2 / kW (ON/OFF compressor)
Effective protection against corrosion thanks to the use of the Crystal Enamel® enamel surface
Optimal balance between energy efficiency and purchase price and operating costs
Protective magnesium anode for additional protection of the internal surfaces of the heater
Minimization of heat losses through the use of ThermoGen® rigid polyurethane foam
Hard plastic casing, easy to keep clean
Thermometer on the heater casing for reading water temperature and operating the heater
6/4" stub pipe for mounting an electric heater, e.g., for emergency domestic hot water heating
170 mm inspection opening in the lower part of the heater for maintenance or installation of additional elements
Adjustable feet for leveling the heater on the room floor
Favorable 5-year warranty conditions
TECHNICAL DATA:
Diameter: 584 mm
Height: 1541 mm
Weight: 119 kg
Exchanger surface: 2.5 m2
Allowed working pressure: 10 bar
If the products are not in stock, prices may change.
We will inform you in good time.
Specifications
No specifications.
Hewalex OKC250NTR / HP Buffer
The Hewalex OKC 250 NTR/HP Buffer is designed for heating domestic hot water using a heat pump or other heat source with a reduced flow temperature.
The OKC 250 NTR/HP Buffer comes standard with one heat exchanger (heating coil). The coil has a significantly larger heat dissipation surface compared to a heater of the same capacity where one coil is designed for use with a boiler. The larger surface of the coil makes it possible to maintain the required heating capacity for heating domestic water at a lower flow temperature - in the range of 50-60°C. Favorable operating conditions are also guaranteed for low-temperature heat sources - a heat pump or a condensing boiler.
An additional optional heat source can be an electric heater - the heater allows installation in a separate 6/4" stub. An additional inspection opening with a diameter of 150 mm, built into the lower part of the heater, facilitates maintenance and allows for the installation of any additional accessories.
The buffer is characterized by low heat losses thanks to the use of thermal insulation made of rigid polyurethane foam with a thickness of 50 mm. The energy efficiency class "C" proves a very high standard in its class and size of heaters, while maintaining an optimal balance between energy efficiency and purchase and operating costs.
The outer casing is made of hard plastic with increased resistance to dirt and mechanical damage. The internal steel surfaces are coated with ceramic enamel to protect against corrosion. Additional protection is provided by the magnesium anode, which is supplied as standard with the heater. The buffer can be placed directly on the floor and leveled precisely thanks to the adjustable feet.
OVERVIEW OF FEATURES:
1 heating coil with a significantly larger heat dissipation surface
Design adapted to work with a reduced flow temperature (heat pump, condensing boiler)
The recommended ratio of exchanger surface to heat pump heating power is 0.2 m2 / kW (inverter compressor) or 0.3 m2 / kW (ON/OFF compressor)
Effective protection against corrosion thanks to the use of the Crystal Enamel® enamel surface
Optimal balance between energy efficiency and purchase price and operating costs
Protective magnesium anode for additional protection of the internal surfaces of the heater
Minimization of heat losses through the use of ThermoGen® rigid polyurethane foam
Hard plastic casing, easy to keep clean
Thermometer on the heater casing for reading water temperature and operating the heater
6/4" stub pipe for mounting an electric heater, e.g., for emergency domestic hot water heating
170 mm inspection opening in the lower part of the heater for maintenance or installation of additional elements
Adjustable feet for leveling the heater on the room floor
Favorable 5-year warranty conditions
TECHNICAL DATA:
Diameter: 584 mm
Height: 1541 mm
Weight: 119 kg
Exchanger surface: 2.5 m2
Allowed working pressure: 10 bar
If the products are not in stock, prices may change.
We will inform you in good time.
No specifications.