Modulating
Gas Condensing Boiler NBX

Instant heat without lead time

The modulating gas condensing boilers of the NBX series from Kroll are the ideal solution for heating or ventilating industrially used premises. They are particularly suitable for use in production halls, workshops, large garages, warehouses, sales and exhibition rooms. Even targeted heating of partial areas, e.g. in process processing, is possible. By eliminating lead times, such as with central heating, they provide fast and comfortable warmth both during spontaneous cold snaps and on particularly cold days. In summer, our NBX units can also be used to ventilate rooms.

The heart of all units is the patented stainless steel heat exchanger. This ensures a particularly high air throughput, while the high-performance burner has newly developed burner lances, electronic ignition and ionisation monitoring. Comprehensive thermal insulation prevents heat radiation and thus transmission loss. There are no welds in the immediate area of the burner; this makes the burner particularly durable and low-maintenance. The output range extends from 28 to 116 kW, the number of fans is adapted to the output of the units.

The installation of the warm air heaters is very simple. The units are designed for wall mounting and ceiling suspension. They can be installed flue-connected or with a flue gas routing system via the roof or through the outer wall. Through condensing operation, we realise a significant increase in efficiency and thus reduce your operating costs.

We guarantee the quality of our products - As the first manufacturer in the heating and ventilation sector, we offer our customers a full 3-year manufacturer's warranty.

Contact

Telephone

Technical Service
Telephone +49 (0)7191 / 9070-222
Telefax +49 (0)7191 / 9070-201

Please have the item number and serial number of the unit ready when making enquiries.

Sales
Telephone +49 (0)7191 / 9070-200
Telefax +49 (0)7191 / 9070-201

E-Mail

Technical Questions
service@kroll.de

Questions regarding Sales
vertrieb@kroll.de

General requests
info@kroll.de

NBX-devices overview

Nominal heat load max. (Hi)
29,1 kW
Nominal heat output max.
28,0 kW
Nominal heat load min. (Hi)
10,0 kW
Nominal heat output min.
9,4 kW
Volume flow
3.200 m³/h
Electrical input
230/50 V/Hz
Electrical power consumption
0,17 kW
Electronic ignition
ja
Throw range
20 m
Condensate quantity
0,2-1,1 l/h
Depth including fins
830 mm
Depth excluding fins
560 mm
Width
885 mm
Height
580 mm
Weight
65 kg
Exhaust connection
DN80
Supply air connection
DN80
Max. flue gas length (above roof)
10 m
Sound pressure level
53 dB(A)
Nominal heat load max. (Hi)
38,5 kW
Nominal heat output max.
37,0 kW
Nominal heat load min. (Hi)
14,0 kW
Nominal heat output min.
13,3 kW
Volume flow
4.400 m³/h
Electrical input
230/50 V/Hz
Electrical power consumption
0,31 kW
Electronic ignition
ja
Throw range
28 m
Condensate quantity
0,3–1,3 l/h
Depth including fins
830 mm
Depth excluding fins
560 mm
Width
885 mm
Height
580 mm
Weight
75 kg
Exhaust connection
DN80
Supply air connection
DN80
Max. flue gas length (above roof)
10 m
Sound pressure level
55 dB(A)
Nominal heat load max. (Hi)
49,8 kW
Nominal heat output max.
48,0 kW
Nominal heat load min. (Hi)
19,0 kW
Nominal heat output min.
18,4 kW
Volume flow
5.500 m³/h
Electrical input
230/50 V/Hz
Electrical power consumption
0,34 kW
Electronic ignition
ja
Throw range
32 m
Condensate quantity
0,3–1,5 l/h
Depth including fins
896 mm
Depth excluding fins
610 mm
Width
1.225 mm
Height
650 mm
Weight
90 kg
Exhaust connection
DN80
Supply air connection
DN80
Max. flue gas length (above roof)
10 m
Sound pressure level
56 dB(A)
Nominal heat load max. (Hi)
59,0 kW
Nominal heat output max.
57,0 kW
Nominal heat load min. (Hi)
21,0 kW
Nominal heat output min.
20,0 kW
Volume flow
6.500 m³/h
Electrical input
230/50 V/Hz
Electrical power consumption
0,40 kW
Electronic ignition
ja
Throw range
35 m
Condensate quantity
0,3–1,9 l/h
Depth including fins
896 mm
Depth excluding fins
610 mm
Width
1.225 mm
Height
650 mm
Weight
95 kg
Exhaust connection
DN80
Supply air connection
DN80
Max. flue gas length (above roof)
10 m
Sound pressure level
57 dB(A)
Nominal heat load max. (Hi)
90,8 kW
Nominal heat output max.
89,0 kW
Nominal heat load min. (Hi)
35,0 kW
Nominal heat output min.
33,3 kW
Volume flow
10.000 m³/h
Electrical input
230/50 V/Hz
Electrical power consumption
0,66 kW
Electronic ignition
ja
Throw range
39 m
Condensate quantity
1,6–3,3 l/h
Depth including fins
1.081 mm
Depth excluding fins
710 mm
Width
1.775 mm
Height
800 mm
Weight
205 kg
Exhaust connection
DN100
Supply air connection
DN100
Max. flue gas length (above roof)
10 m
Sound pressure level
56 dB(A)
Nominal heat load max. (Hi)
116,0 kW
Nominal heat output max.
115,0 kW
Nominal heat load min. (Hi)
43,0 kW
Nominal heat output min.
40,6 kW
Volume flow
13.000 m³/h
Electrical input
400/50 V/Hz
Electrical power consumption
0,74 kW
Electronic ignition
ja
Throw range
42 m
Condensate quantity
2,7–4,3 l/h
Depth including fins
1.081 mm
Depth excluding fins
710 mm
Width
1.775 mm
Height
800 mm
Weight
215 kg
Exhaust connection
DN100
Supply air connection
DN100
Max. flue gas length (above roof)
10 m
Sound pressure level
60 dB(A)