Junkers Bosch Cerastar Open Chamber Boiler Model ZWR 24-7 KE 24 KW Methane/LPG Code 7736900325 - Low Nox

Technical Features

Model

Junkers Bosch Cerastar ZWR 24-7 KE 24 kW Open-Chamber Methane Boiler, Low Nox

Code: 7736900325

Adjustable for LPG operation by contacting the authorised service centre.

Energy Efficiency

Declared load profile M
Energy efficiency class C
Water heating energy efficiency class B
Rated thermal power kW 24
Annual energy consumption (average climate conditions) QHE kWh -
Annual energy consumption QHE GJ 59
Annual electricity consumption AEC kWh 35
Annual fuel consumption AFC GJ 4
Seasonal space heating energy efficiency ηS % 77
Water heating energy efficiency ηwh % 43
Sound power level indoors LWA dB 46

Performance

At nominal heat output and high temperature regime P4 kW 18.2
At 30% of the nominal heat output and at low temperature P1 kW 5.4
Efficiency
At nominal heat output and high temperature regime η4 % 81.1
At 30% of the nominal heat output and at low temperature regime η1% 81.0
Auxiliary electricity consumption
At full load elmax kW 0.019
At partial load elmin kW 0.018
In standby mode PSB kW 0.007
Other elements
Heat loss in stand-by Pstby kW 0.193
Ignition burner energy consumption Pign kW -
Nitrogen oxide emissions (for gas and fuel oil only) NOx mg/kWh 22
Other elements for mixed heating appliances
Daily electricity consumption (average climate conditions)

Dimensions

Height 850 mm
Depth 380 mm
Width 440 mm
Weight 39 kg

General Features

CERASTAR



The Cerastar conventional boiler uses the best technologies to respect the environment. Indeed, thanks to its components, polluting emissions are reduced, complying with the new ErP 2018 regulation.
Management via EasyControl smart thermostat

The boiler can be controlled via Bosch's EasyControl smart thermostat. The new controller lets you manage your home heating directly from your smartphone and easily adapts to your habits.
Zero noise, zero stress

The Cerastar boiler is among the quietest in its category, in fact with its 46 decibels (18 kW Cerastar) it will allow you to take advantage of all its functions, in silence.
Hot water, whenever you want it

The boiler achieves a 3-star rating for domestic hot water comfort according to European standards EN13203-1/2 and allows you to enjoy domestic hot water whenever you want. The boiler's Comfort function allows you to preheat the water, programming the appliance to run at specific times based on your routine. The Eco function, on the other hand, is designed to save energy and reduce your bills.