This 11-inch diameter by 9

What are the symptoms of a failing Armstrong R100254-11 expansion valve

specifically supporting Ultra Gas Boiler models such as the Ultra 310 and Ultra 80 (Series 1 & 2)

5 psi restricted supply of clean

A difference of more than 3°F between the suction line and the permanent suction connection often indicates an internal leak

Reznor 29571 Ventor Motor 30067439-890 This 11-inch diameter by 9The Reznor 29571 Ventor Motor is a critical 230V OEM replacement component engineered for forced draft combustion in high performance gas fired unit heaters and duct furnaces. As a veteran grade draft inducer motor, this unit is built to manage the precise air to fuel ratios required for efficient ignition and consistent heat exchanger performance. This motor is a direct functional replacement designed to meet the rigorous demands of commercial and