ensuring the sampling tubes capture a representative cross-section of the air stream

or flood-back to the compressor (failed open)

allowing contractors to field-modify the length to match existing dial depths

55" WC set point for exact furnace pressure switch compatibility with Armstrong equipment

This versatile interface ensures proper sequencing between the drafting system and the heating appliances

Weil McLain 510-811-461 Conversion Kit Refrigerant ensuring the sampling tubes captureThe Weil McLain 510 811 461 is a specialized thermocouple to thermopile conversion kit engineered for natural gas applications within EG and PFG series boilers (specifically PFG 6 & 7, Series 3 7). This OEM grade upgrade is essential for technicians dealing with older standing pilot systems that suffer from inconsistent millivolt signals or frequent thermocouple failure. By transitioning to a thermopile based ignition system, the boiler gains a more