a technician must physically inspect the venting and heat exchanger for blockages or cracks before the furnace can be put back into operation

and auxiliary stages

it prevents hazardous combustion byproduct recirculation

making it ideal for low-pressure city gas applications

Common Questions & Technical Support How do I troubleshoot a suspected faulty LH33WZ015 sensor

Sensus 173-62-021-02 Spring 320788-703 a technician must physically inspectThe Sensus 173 62 021 02 Spring is a critical component for maintaining precise pressure control in Sensus 143 80 gas regulators and other compatible 173 series models. As a veteran grade cadmium spring, it is engineered to provide a specific outlet pressure range of 1 2 to 3 PSI, ensuring the regulator maintains a stable set point even under varying inlet conditions. This cadmium plated heating and gas part is designed for high corrosion resistance