Qingdao Haiang HVAC Equipment Co., Ltd.,

Qingdao Hiounce HVAC Equipment Co., Ltd., established in 1958, specializes in the R&D and manufacturing of gas-fired combination boilers, condensing boilers, and modular boilers—with an annual output of 120,000 units. In partnership with Italy’s Cosmo Group, the company is committed to delivering international-standard, high-quality, low-carbon, and environmentally friendly gas thermal energy equipment solutions.

Contact Info

ZunXiang ZX-01

ZunXiang ZX-01

Class 1 Energy Efficiency Gas-Fired Boiler for Space Heating & Domestic Hot Water

This product employs full premix combustion technology—using an electronically controlled proportional fan and gas proportional valve to precisely regulate the air-to-gas ratio—ensuring more complete, efficient, and rapid combustion (up to 30% faster than conventional units), delivering stable, powerful thermal output for both space heating and domestic hot water.

Its condensing waste heat recovery system captures latent heat from exhaust water vapor via a dedicated condensing heat exchanger—achieving maximum thermal efficiency up to 108%. For example, a 24 kW model saves approximately 300 m³ of natural gas annually (based on 4 hours/day usage), offering Class 1 energy efficiency and significant cost savings.

Designed for environmental responsibility and user comfort, its “uniform premix + precise temperature control” strategy suppresses NOx formation—reducing NOx emissions by over 80% versus conventional units. A brushless DC motor fan, wrapped in acoustic insulation, operates at just 38 dB. Smart remote control enables "Away Mode," "Home Preheating," real-time monitoring, and safety alerts—delivering a premium heating experience that’s energy-efficient, eco-friendly, quiet, and secure.

  • Full Premix Combustion Technology
    Uses an electronically controlled proportional fan + gas proportional valve to achieve optimal air-to-gas ratio—combustion speed up to 30% faster than conventional units.
  • Condensing Waste Heat Recovery
    Recovers latent heat from water vapor via a condensing heat exchanger—maximum thermal efficiency up to 108%.
  • Class 1 Energy Efficiency — Highly Efficient & Energy-Saving
    For example, a 24 kW model saves ~300 m³ of natural gas annually (based on 4 hours/day usage), reducing operating costs by ~¥800 per year.
  • Low-NOx Eco-Friendly Emissions
    “Uniform Premix + Precise Temperature Control” suppresses nitrogen oxide formation—NOx emissions reduced by >80% vs. conventional units.
  • Low-Noise Operation
    Brushless DC motor fan with acoustic insulation padding—operating noise as low as 38 dB.
  • Smart Remote Control
    Supports “Away Mode” and “Home Preheating”; real-time monitoring and safety alerts.
Parameter LL1GBQ24-BQL LL1GBQ28-BQL LL1GBQ32-BQL LL1GBQ36-BQL LL1GBQ40-BQL
Gas Type (12T) Natural Gas Natural Gas Natural Gas Natural Gas Natural Gas
Rated Gas Pressure (Pa) 2000 2000 2000 2000 2000
Rated Heating Output (kW) 24 28 32 36 40
Minimum Heating Output (kW) 4.8 5.6 6.4 7.2 8
Rated Domestic Hot Water Output (kW) 24 28 32 36 40
Rated Heating Output (80℃/60℃) (kW) 23.2 27 30.8 34.6 38.5
Minimum Heating Output (80℃/60℃) (kW) 4.6 5.4 6.2 7 7.8
Rated Condensing Heating Output (50℃/30℃) (kW) 24.8 28.9 33 37.1 41.2
Minimum Condensing Heating Output (50℃/30℃) (kW) 4.9 5.8 6.6 7.4 8.2
Maximum System Pressure (MPa) 0.3 0.3 0.3 0.3 0.3
Domestic Hot Water System Operating Pressure (MPa) 0.03–0.7 0.03–0.7 0.03–0.7 0.03–0.7 0.03–0.7
Minimum Flow Rate for DHW Activation (L/min) 2.7 2.7 2.7 2.7 2.7
Hot Water Production Capacity at Δt = 25℃ (kg/min) 13 15 17.5 19.5 21.5
Expansion Tank Precharge Pressure (bar) 1 1 1 1 1
Radiator Temperature Adjustment Range (℃) 30–80 30–80 30–80 30–80 30–80
Floor Heating Temperature Adjustment Range (℃) 30–60 30–60 30–60 30–60 30–60
DHW Temperature Adjustment Range (℃) 30–60 30–60 30–60 30–60 30–60
Power Supply (AC) 220V~50Hz 220V~50Hz 220V~50Hz 220V~50Hz 220V~50Hz
Electric Shock Protection Class Class I Class I Class I Class I Class I
Enclosure Protection Rating IPX4 IPX4 IPX4 IPX4 IPX4
Rated Electrical Power (W) 150 150 150 150 150
Heating Flow/Return Connection G3/4 G3/4 G3/4 G3/4 G3/4
Gas Connection G3/4 G3/4 G3/4 G3/4 G3/4
DHW Inlet/Outlet Connection G1/2 G1/2 G1/2 G1/2 G1/2
Coeffaxial Flue Dimensions (mm) Φ60/100 Φ60/100 Φ60/100 Φ60/100 Φ60/100
Net Weight/Gross Weight (kg) 36.4/39.4 36.8/39.8 37.8/40.8 38/41 39/42
Dimensions (L×W×H) (mm) 830×480×380 830×480×380 830×480×380 830×480×380 830×480×380
Energy Efficiency Class Class 1 Class 1 Class 1 Class 1 Class 1
Thermal Efficiency (%) 108 108 108 108 108