this specific 5101 model is primarily intended for general HVAC and VAV terminal control

while the 3/16" x 11-5/8" nickel-plated bulb ensures rapid thermal response to prevent oil or surface overheating

As the official HH19ZA965A replacement

supporting a maximum static pressure of 400 psi and a close-off pressure of 30 psi

always verify the specific high-altitude pressure requirements designated in the Reznor technical manual

Intermatic T171 Timer Els PW 17895 this specific 5101 model isThe Intermatic T171 is a heavy duty 24 hour mechanical time switch engineered for contractors who require precise, reliable control over electrical loads up to 40 Amps per pole. This SPST (Single Pole Single Throw) timer is specifically designed for 125V applications where a "skip a day" feature is critical for energy management and operational efficiency. The integrated Skip a Day function, facilitated by three provided skipper screws, allows you to