White-Rodgers PG9ADZ102 Pilot Generator

The White-Rodgers PG9ADZ102 Pilot Generator is a critical replacement component for gas-fired appliances requiring a 750 millivolt (mV) power source to operate the main gas valve without external electricity. This Powerpile generator features a 180-degree channel type head designed for optimal flame impingement and rapid heat-to-voltage conversion. The 0.87" element length and two-wire 32" leads provide sufficient reach for standard manifold configurations, while the F spade clip connectors ensure a secure, vibration-resistant electrical contact. When troubleshooting thermopile voltage drop or a pilot that fails to hold the valve open, this heavy-duty generator provides the necessary thermoelectric current to maintain system reliability. It is compatible with a wide range of standing pilot furnaces, boilers, and water heaters utilizing 750mV control circuits. Using this OEM-spec part avoids impedance mismatches common with generic alternatives, ensuring the millivolt system stays within specified operating parameters.

• Efficient Thermoelectric Output: Delivers a consistent 750mV signal to the operator coil for reliable main valve actuation.
• Durable Construction: The 180-degree channel head orientation resists soot buildup and optimizes thermal transfer.
• Universal Compatibility: Designed to replace standard PG9 pilot generators in industrial and residential gas heating applications.
• Simplified Installation: Standard 32-inch lead wires and spade terminals allow for fast field replacement in tight burner compartments.

How do I test the millivolt output of the PG9ADZ102?
Set your multimeter to the DC millivolt scale and check across the spade terminals while the pilot flame is engulfing the top 1/2 to 2/3 of the generator tip; you should see a reading between 650mV and 750mV under no-load conditions.

What causes a pilot generator to fail prematurely?
Excessive flame impingement can lead to thermal fatigue of the internal dissimilar metals, while insufficient flame coverage or a clogged pilot orifice prevents the junction from reaching the required temperature for voltage generation.

Can this millivolt generator be used with propane (LP)?
Yes, provided the pilot burner assembly is correctly orificed for LP and the flame is properly adjusted to heat the thermopile head.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.