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Demrad Solaris BK-117B-S 20 kW

Photos - Boiler Demrad Solaris BK-117B-S 20 kW
Outdated Product
Energy source: gas; Installation: wall; Type: dual-circuit (heating and DHW); Heating area (m²): 160; Heat output (kW): 20; Coolant min. T (°C): 30; Coolant max. T (°C): 85; DHW min. T (°C): 30; DHW max. T (°C): 65; Efficiency (%): 93.1; Combustion chamber: open (atmospheric); Firebox size: Dimensions (mm): 720x405x330
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Demrad Solaris BK-117B-S 20 kW
Energy source:gas
Mount:wall, dual-circuit
Boiler power:20 kW, area ~ 160 m²
Combustion chamber:open, flue 130 mm
DHW temperature:from 30 °С, up to 65 °С
All specifications
Specifications Solaris BK-117B-S
Main
Energy sourcegas
Installationwall
Typedual-circuit (heating and DHW)
Heating area160 m²
Technical specs
Heat output20 kW
Power supply230 В
Power consumption116 W
Coolant min. T30 °С
Coolant max. T85 °С
Heating circuit max. pressure3.5 bar
DHW circuit max. pressure10 bar
Consumer specs
DHW min. T30 °С
DHW max. T65 °С
Performance (ΔT ~30 °C)8.2 L/min
"Summer" mode
Circulation pump
Boiler specs
Efficiency93.1 %
Combustion chamberopen (atmospheric)
Flue diameter130 mm
Inlet gas pressure13 mbar
Max. gas consumption2.4 m³/h
Expansion vessel capacity7 L
Expansion vessel pressure0.5 bar
Connections
Mains water intake1/2"
DHW flow1/2"
Gas supply3/4"
Central heating flow3/4"
Central heating return3/4"
Safety
Safety systemsgas pressure drop
water overheating
flame loss
draft control
water circulation failure
frost protection
More specs
Dimensions (HxWxD)720x405x330 mm
Weight33 kg
Added to E-CatalogFebruary 2014
The information in the model description is for reference purposes.
Always clarify the specifications and configuration of the product with the online store manager before purchasing.
Catalog Demrad 2025 - new arrivals, bestsellers, and the most relevant models Demrad.
Additional features boiler Demrad Solaris BK-117B-S:
  • Possibility to connect an outdoor temperature sensor
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