HRE 28 Boiler CW4 80/80

Hre 28 combination boiler, CW4, max. supply 90°C, power 80-60°C/22.8kW, 80/80, hxwxd 650x450x240mm

With the central heating boilers from you immediately have the most commonly used installation materials at hand. For your ease of ordering and installation, the main accessories are included. Interested in a CO craftsmanship exam training (carbon monoxide prevention) including a free CO detector? Then look at documentation for this training.

Heat exchanger material: Aluminum
Closed version: Yes
Nom. power 80-60 °C: 22.8 kW
Nom. power 50-30 °C: 23.4 kW
Nom. load upper value: 26.4 kW
Nom. lower load: 23.7 kW
Heating power adjustable: Yes
Suitable for natural gas: Yes
Suitable for propane: Yes
Conversion kit required: Yes
Control signal on/off: Yes
Control signal OpenTherm: Yes
Burner control modulating: Yes
Max. supply temperature (working temperature): 90 °C
Max. permissible operating pressure: 3 bar
Min. working pressure: 0.5 bar
Gaskeur HR: Yes
Gaskeur VR/SV: Yes
Gaskeur NZ: Yes
CW label: 4
Return: 107%
Max. gas supply pressure: 30 mbar
Min. gas supply pressure: 20 mbar
Nom. tap water power: 27.9 kW
Nom. lower tap water load: 29.9 kW
Nom. load upper value tap water: 33.2 kW
Hot water capacity at 60 °C: 7.5 l/min
Tap threshold: 1.5 l/min
Supply voltage: 230 V
Built-in pump circuit: Yes
Built-in pressure gauge: Yes
Built-in weather-dependent controller: Yes
Height: 650mm
Width: 450mm
Depth: 240 mm
Supply connection: Compression
External pipe diameter supply: 22 mm
Return connection: Compression
Outer pipe diameter return: 22 mm
Fuel connection: Compression
External fuel tube diameter: 15 mm
Air supply connection: Socket end
Nom. air supply duct diameter: 80 mm
Flue gas discharge connection: Socket end
Nom. flue gas discharge duct diameter: 80 mm
Cold tap water connection: Compression
External pipe diameter of cold tap water: 15 mm
Domestic hot water connection: Compression
External pipe diameter of hot tap water: 15 mm
Condensation connection: Flexible
External condensation tube diameter: 25.4 mm
SEER (Ns) at average conditions: 93
Water heating energy efficiency (Nwh): 85%
Capacity profile: XL
Space heating energy efficiency class: A
Water heating energy efficiency class: A
Useful heat output at nominal heat output and high temperature operation (P4): 22.8 kW
Useful efficiency at nominal. heat output and high temperature operation (n4): 86.8%
Additional electricity consumption at full load (ELmax): 0.035 kW
Supplementary electricity consumption in standby mode (Psb): 0.002 kW
Standby heat loss (Pstby): 0.038 kW