CWNS non-pressurised gas-fired direct hot water boiler

CWNS non-pressurised gas-fired direct hot water boiler

Fuel type: natural gas
Typical application: business, hotel, hospital, office building, district heating supply etc.
Thermal efficiency: ≥92%

The CWNS automatic gas-fired hot water boiler is a horizontal internal combustion three-pass boiler fitted with smoke tubes. This model is designed for quick on-site installation. The wet-back furnace comes with a heat exchanger. The high-temperature flue gas first travels through the second and third smoke tube passes, is then directed to the rear flue chamber and finally discharged via the chimney. The burner is equipped with the latest technologies such as automatic air-fuel control, automatic water supply control, programmable start-stop and automatic operation. It also comes with automatic safety features such as water temperature control, automatic thermal cut-off and automatic high-pressure cut-off. This type of boiler is safe and highly efficient. It generates less pollution and noise. Its compact design makes it easy to install and operate.

FEATURES

Complete combustion system

100% corrugated furnace with large combustion chamber

Advanced engineering

Thermal efficiency ≥92%
Automatic control system

Low carbon footprint and eco-friendly

Compliant with national manufacturing specifications

Investment cost

Automatic feeding system minimising human intervention
Only requires one operator

SPECIFICATION

Model
CWNS 0.45 CWNS 0.7 CWNS 1.05 CWNS 1.4 CWNS 1.75 CWNS 2.1 CWNS 2.8 CWNS 4.2
Specification Heating output Kw 465 698 1047 1398 1745 2097 2796 4194
*104 Kcal/h 40 60 90 120 150 180 240 360
Rated inlet and outlet temperature 95/70
Design exhaust temperature <220
25℃ difference hot water output L/h 16000 24000 36000 48000 60000 72000 96000 144000
Design thermal efficiency % ≥90
Opacity of smoke Ringelmann Chart <1 (Comply with China national regulations)
Fuel consumption liquefied petroleum gas Nm³/h 20.3 30.3 45.5 60.6 75.8 91 121.3 182
Natural gas Nm³/h 51.8 77.6 116.3 155.1 193.8 232.6 310.2 465.2
City gas Nm³/h 111.2 166.8 250 333.5 416.7 500 666.8 1000
Power Volume 50HZ.V 220 380
Burner gas Kw 0.55 1.1 1.5 2.2 3.0 5.0 7.5 13.5
Overall size Weight without water Kg 1220 1500 2460 3242 3950 4660 6543 10050
Weight with water Kg 1880 2430 3160 4400 6150 7020 10940 14000
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