ZunYun ZN-01
Gas-fired Combi Boiler
Designed with economy, practicality, stability, and durability at its core, this product features a compact body structure—reducing volume by approximately 15%–20% compared to conventional models—to effectively save indoor installation space, making it ideal for family residences, fully-furnished apartments, and other residential applications.
Equipped with a full-copper heat exchanger, the unit delivers high heat transfer efficiency and excellent corrosion resistance, ensuring long-term stable operation. The system supports dual-mode operation—space heating and domestic hot water (DHW)—enabling convenient switching between independent heating mode and DHW mode to meet year-round household heating and hot water needs.
Leveraging mature and reliable control technology, the unit incorporates microcomputer-based self-diagnosis for faults, offering simple operation and easy installation. With 51 layers of safety protection, overall usage safety and operational stability are significantly enhanced—delivering a worry-free, comfortable, and secure home heating and hot water experience.
Category:
Gas-Fired Condensing Combi Boiler- High Cost-Performance Ratio, Economical & Practical, Compact Design Saves Space
Up to 15–20% smaller footprint than conventional models—maximizing usable indoor area. - Simple Operation & Easy Installation
User-friendly interface and straightforward installation process. - Full-Copper Heat Exchanger
Delivers highly efficient heat transfer and excellent corrosion resistance. - Mature Technology, Reliable Performance, Microcomputer-Controlled Self-Diagnosis
Enhanced safety and reliability. - Dual-Mode Operation: Space Heating & Domestic Hot Water
Switches seamlessly between independent heating mode and domestic hot water mode—meeting year-round household needs. - 51 Safety Protection Features
Comprehensive safety coverage for worry-free operation.
| Parameter | LL1PB20-B | LL1PB24-B | LL1PB28-B | LL1PB32-B | LL1PB36-B | LL1PB40-B |
|---|---|---|---|---|---|---|
| Gas Type (12T) | Natural Gas | Natural Gas | Natural Gas | Natural Gas | Natural Gas | Natural Gas |
| Rated Gas Pressure (Pa) | 2000 | 2000 | 2000 | 2000 | 2000 | 2000 |
| Rated Heating Output (kW) | 20 | 24 | 28 | 32 | 36 | 40 |
| Minimum Heating Output (kW) | 7 | 8.4 | 9.8 | 11.2 | 12.6 | 14 |
| Rated DHW Output (kW) | 20 | 24 | 28 | 32 | 36 | 40 |
| Rated Heating Output (80℃/60℃) (kW) | 18 | 21.6 | 25.2 | 28.8 | 32.4 | 36 |
| Minimum Heating Output (80℃/60℃) (kW) | 6 | 7.2 | 8.4 | 9.6 | 10.7 | 12 |
| Max. System Pressure (MPa) | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 |
| Recommended DHW System Pressure (MPa) | 0.03–0.7 | 0.03–0.7 | 0.03–0.7 | 0.03–0.7 | 0.03–0.7 | 0.03–0.7 |
| Minimum DHW Flow Rate to Activate (L/min) | 3 | 3 | 3 | 3 | 3 | 3 |
| Hot Water Production Capacity at Δt = 25℃ (kg/min) | 10 | 12 | 14 | 16 | 18 | 20 |
| Radiator Temperature Adjustment Range (℃) | 30–80 | 30–80 | 30–80 | 30–80 | 30–80 | 30–80 |
| Underfloor Heating Temperature Adjustment Range (℃) | 30–60 | 30–60 | 30–60 | 30–60 | 30–60 | 30–60 |
| DHW Temperature Adjustment Range (℃) | 30–60 | 30–60 | 30–60 | 30–60 | 30–60 | 30–60 |
| Power Supply (AC) | 220V～50Hz | 220V～50Hz | 220V～50Hz | 220V～50Hz | 220V～50Hz | 220V～50Hz |
| Electric Shock Protection Class | Class I | Class I | Class I | Class I | Class I | Class I |
| Enclosure Protection Rating | IPX4 | IPX4 | IPX4 | IPX4 | IPX4 | IPX4 |
| Rated Electrical Power (W) | 130 | 130 | 135 | 175 | 185 | 185 |
| Heating Flow/Return Connection | G3/4 | G3/4 | G3/4 | G3/4 | G3/4 | G3/4 |
| Gas Connection | G3/4 | G3/4 | G3/4 | G3/4 | G3/4 | G3/4 |
| DHW Inlet/Outlet Connection | G1/2 | G1/2 | G1/2 | G1/2 | G1/2 | G1/2 |
| Concentric Flue Dimensions (mm) | Φ60/100 | Φ60/100 | Φ60/100 | Φ60/100 | Φ60/100 | Φ60/100 |
| Overall Dimensions (L×W×H) (mm) | 660×370×240 | 660×370×240 | 660×370×325 | 660×370×325 | 740×510×330 | 740×510×330 |
| Energy Efficiency Class | Class 2 | Class 2 | Class 2 | Class 2 | Class 2 | Class 2 |
| Thermal Efficiency (%) | ≥90 | ≥90 | ≥90 | ≥90 | ≥90 | ≥90 |
