Provide the most efficient and safe heating system


Fully premixed vacuum hot water boiler

LIJU introduces the premixed technology from Germany and Nozzle combustion technology from Panasonic in Japan ,then LIJU developed a new generation YHZRQ Fully Premixed Vacuum Hot Water Boiler,which reduced in size 30% ,weight 50% and noise 60% than hot water boiler of diffusion combustion.Fully Premixed Vacuum Hot Water Boiler can save investments on gas pressure-regulating station because it uses domestic gas. The unit can mute burn completely by applying multi-layer of sound insulation technology ,if in outdoor ,there is no sound.

The main parameters:
The range of output power:30万大卡~60万大卡
Heat exchanger model:Heating, hot water heat exchanger
Fuels:natural gas
Main applications:hot water for hotels and small area heating etc.



Model Rated Heating Capacity Power Supply Electric power Natural Gas Gas Diameter Exhaust stack diameter Weight
YHZRQ-30 30×104kcal/h 220/50(V/Hz) 0.4kw 37.1Nm3/h DN40 350×300(mm) 1200kg
YHZRQ-45 45×104kcal/h 220/50(V/Hz) 0.7kw 55.7Nm3/h DN40 400×350(mm) 1700kg
YHZRQ-60 60×104kcal/h 220/50(V/Hz) 1.1kw 74.2Nm3/h DN50 450×400(mm) 2000kg
  • The above specification is based on the following values: Low heating value of fuel: Natural gas 8600kcal/Nm3
  • All of the heat exchanger are manufacture by standards for hot water quality;
  • The parameters above are only for reference ,please consult us for details.


Model Length(mm) Width(mm) Height(mm)
YHZRQ-30 1860 860 1770
YHZRQ-45 2100 960 1880
YHZRQ-60 2210 1060 2080