Johnson Controls A19ABA-4 Utility Thermostat Els PW 17895 but the mounting footprint and

but the mounting footprint and lead configurations are specifically optimized for Reznor units

Optimized Response Time: Engineered to detect winding heat spikes accurately

multiple relays can be wired in parallel or series as per the original equipment manufacturer's wiring diagram to achieve staged heating

ensuring the thermostatic expansion valve (TXV) functionality maintains the compressor within a safe operating envelope

Ensure the 3/4" MNPT inlet is securely threaded into the boiler's dedicated relief port without restricting the flow path

Johnson Controls A19ABA-4 Utility Thermostat Els PW 17895 but the mounting footprint andThe Johnson Controls A19ABA 4 Utility Thermostat is a rugged, single stage remote bulb temperature control engineered for high accuracy cycling in commercial refrigeration and HVAC systems. Designed with a liquid filled sensing element, this controller maintains precision "repeat" accuracy regardless of barometric pressure or cross ambient temperature fluctuations. The A19ABA 4 features a broad 120 208 240 Vac compatibility and SPST (Single Pole