HH-NL-501 is specially designed for gas heating furnace production lines. It supports full performance testing of heating furnaces in the power range of 0-40kW, integrating 25+ core index tests such as thermal efficiency (accuracy ±1%), air tightness (leakage ≤0.05L/h), safety protection (flameout response ≤30s), etc. It is equipped with a PLC intelligent touch control system and a high-precision sensor matrix, complies with GB 25034 and EN 61326 international standards, and automatically generates energy efficiency curves and fault diagnosis reports. It is the core testing equipment for wall-mounted boiler manufacturers, quality inspection agencies and certification laboratories.