ZunRui ZR-01
Condensing Gas-Fired Combi Boiler
This product features DC inverter control technology that automatically adjusts power output according to actual space heating and domestic hot water demands—ensuring precise temperature control and superior energy efficiency. Its dual-stage heat exchange system—comprising a primary heat exchanger and a condensing heat exchanger—combined with condensing waste heat recovery technology, fully recaptures latent heat from flue gases, boosting thermal utilization efficiency to a maximum of 105%.
Additionally, the unit integrates an exclusive air distribution and flow guidance system to stabilize combustion and ensure uniform heat distribution across the heat exchanger—further enhancing overall operational efficiency. A dual inverter silent system—featuring both an inverter fan and an inverter circulation pump—effectively reduces operating noise, delivering nighttime noise levels below 40 dB for quiet, comfortable, and energy-efficient heating and hot water performance.
Smart remote control functionality supports convenient features such as "Away Mode" and "Home Preheating", along with real-time system monitoring and safety alarm capabilities—making home heating smarter, safer, and worry-free.
Category:
Gas-Fired Condensing Combi Boiler- DC Inverter Technology for Precise Temperature Control and Enhanced Energy Savings
Automatically adjusts power output based on actual heating/hot water demand—up to 30–50% more energy-efficient than conventional fixed-frequency models. - Dual-Stage Heat Exchange Design for Maximum Thermal Efficiency
Features a “primary heat exchanger + condensing heat exchanger” configuration, recovering flue gas waste heat twice for up to 105% thermal efficiency. - Condensing Waste Heat Recovery Technology
Cools flue gases to condense water vapor, recovering latent heat and reusing exhaust heat to significantly improve heating efficiency. - Smart Remote Control
Supports “Away Mode” and “Home Preheating” functions; enables real-time monitoring and safety alerts. - Exclusive Air Distribution and Flow Guidance System
Introduces secondary air for more stable combustion and ensures uniform heat distribution across the heat exchanger, improving overall thermal efficiency. - Dual Inverter Silent Operation System
Combines an inverter fan and inverter circulation pump for dual-source noise reduction—nighttime operation noise below 40 dB.
| Parameter | LL1PBD20-BLF | LL1PBD24-BLF | LL1PBD28-BLF |
|---|---|---|---|
| Gas Type (12T) | Natural Gas | Natural Gas | Natural Gas |
| Rated Gas Pressure (Pa) | 2000 | 2000 | 2000 |
| Rated Heating Output (kW) | 20 | 24 | 28 |
| Minimum Heating Output (kW) | 8.2 | 8.4 | 9.8 |
| Rated Domestic Hot Water Output (kW) | 20 | 24 | 28 |
| Rated Heating Output (80℃/60℃) (kW) | 19 | 22.8 | 26.6 |
| Minimum Heating Output (80℃/60℃) (kW) | 7.8 | 8 | 9.3 |
| Rated Condensing Heating Output (50℃/30℃) (kW) | 20 | 24 | 28 |
| Minimum Condensing Heating Output (50℃/30℃) (kW) | 7.9 | 8.1 | 9.4 |
| Max System Pressure (MPa) | 0.3 | 0.3 | 0.3 |
| Domestic Hot Water Operating Pressure Range (MPa) | 0.03–0.7 | 0.03–0.7 | 0.03–0.7 |
| Min Domestic Hot Water Flow Rate (L/min) | 2.7 | 2.7 | 2.7 |
| Hot Water Production Capacity at Δt = 25℃ (kg/min) | 11 | 13 | 15 |
| Radiator Temperature Adjustment Range (℃) | 30–80 | 30–80 | 30–80 |
| Underfloor Heating Temperature Adjustment Range (℃) | 30–60 | 30–60 | 30–60 |
| Domestic Hot Water Temperature Adjustment Range (℃) | 30–60 | 30–60 | 30–60 |
| Power Supply (AC) | 220 V ~ 50 Hz | 220 V ~ 50 Hz | 220 V ~ 50 Hz |
| Electric Shock Protection Class | Class I | Class I | Class I |
| Enclosure Protection Rating | IPX4 | IPX4 | IPX4 |
| Rated Electrical Power (W) | 135 | 135 | 135 |
| Heating Flow/Return Connection | G3/4 | G3/4 | G3/4 |
| Gas Connection | G3/4 | G3/4 | G3/4 |
| Domestic Hot Water Inlet/Outlet Connection | G1/2 | G1/2 | G1/2 |
| Coaxial Flue Diameter (mm) | Φ60/100 | Φ60/100 | Φ60/100 |
| Net/Gross Weight (kg) | 38.8 / 41.8 | 39.2 / 42.2 | 40.2 / 43.2 |
| Dimensions (L × W × H) (mm) | 830 × 480 × 380 | 830 × 480 × 380 | 830 × 480 × 380 |
| Energy Efficiency Class | Level 1 | Level 1 | Level 1 |
| Thermal Efficiency (%) | 103–105 | 103–105 | 103–105 |
