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Mora SIRIUS 20KK 21 kW

Photos - Boiler Mora SIRIUS 20KK 21 kW
Outdated Product
$897
Energy source: gas; Installation: wall; Type: dual-circuit (heating and DHW); Heating area (m²): 158; Heat output (kW): 21; Coolant min. T (°C): 20; Coolant max. T (°C): 80; DHW min. T (°C): 30; DHW max. T (°C): 60; Performance (ΔT=25 °C) (L/min): 11.8; Heated floor mode; Efficiency (%): 92.4
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Mora SIRIUS 20KK 21 kW
Energy source:gas
Mount:wall, dual-circuit
Boiler power:21 kW, area ~ 158 m²
Combustion chamber:open, flue 130 mm
DHW temperature:from 30 °С, up to 60 °С
All specifications
Specifications SIRIUS 20KK
Main
Energy sourcegas
Installationwall
Typedual-circuit (heating and DHW)
Heating area158 m²
Technical specs
Heat output21 kW
Power supply230 В
Power consumption180 W
Coolant min. T20 °С
Coolant max. T80 °С
Heating circuit max. pressure3 bar
DHW circuit max. pressure6 bar
Consumer specs
DHW min. T30 °С
DHW max. T60 °С
Performance (ΔT=25°C)11.8 L/min
Performance (ΔT ~30 °C)8.4 L/min
"Summer" mode
Heated floor mode
Circulation pump
Boiler specs
Efficiency92.4 %
Combustion chamberopen (atmospheric)
Flue diameter130 mm
Inlet gas pressure13 mbar
Max. gas consumption2.39 m³/h
Expansion vessel capacity7 L
Expansion vessel pressure1.2 bar
Connections
Mains water intake1/2"
DHW flow1/2"
Gas supply3/4"
Central heating flow3/4"
Central heating return3/4"
Safety
Safety systemswater overheating
draft control
water circulation failure
frost protection
More specs
Dimensions (HxWxD)775x400x381 mm
Weight29 kg
Added to E-CatalogJuly 2011
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 Mora 2025 - new arrivals, bestsellers, and the most relevant models Mora.
Model modification:
  • Model SIRIUS 20 KK — double-circuit with an open combustion chamber
  • Model SIRIUS 20 SK — single-circuit with an open combustion chamber
  • Model SIRIUS 20 KT — double-circuit with a closed combustion chamber
  • Model SIRIUS 20 ST — single-circuit with a closed combustion chamber

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