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 |