ZunLe ZL-01
Gas-fired Combi Boiler
This product is an economical and practical wall-hung gas-fired boiler designed for residential heating and domestic hot water (DHW). Its compact design reduces volume by approximately 15%–20% compared to conventional models, effectively saving indoor installation space—ideal for family homes, fully-furnished apartments, and other residential applications.
Equipped with a European-style gas valve, it delivers high control accuracy, excellent pressure stability, and strong self-adaptation, ensuring consistently stable combustion. The knob-type control panel offers simple, intuitive operation—ideal for seniors and all household users.
It supports dual-mode operation: space heating and DHW—enabling flexible, seamless switching between modes to meet seasonal heating and hot water demands. Integrated smart remote control enables "Away Mode," "Home Preheating," real-time monitoring, and safety alerts. With 51 layers of safety protection, this unit delivers reliable, safe, and hassle-free performance.
Category:
Gas-Fired Condensing Combi Boiler- Economical and Practical — Ideal for Home Use
15%–20% more compact than conventional units, saving valuable indoor space. - European-Style Gas Valve Design
High control precision, excellent pressure stabilization, strong self-adaptation capability, and more stable combustion. - Knob-Type Control Panel
Simple and intuitive operation. - Dual-Mode Heating & Domestic Hot Water (DHW)
Supports independent space heating mode and DHW mode—easy switching to meet year-round household needs. - Smart Remote Control
Features “Away Mode” and “Home Preheating”; real-time monitoring and safety alerts. - 51 Layers of Safety Protection
Comprehensive safety safeguards.
| 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 |
