the visible internal scale and front-facing adjustment screws allow for rapid setpoint calibration without removing the cover

Engineered as a direct OEM replacement ignition control

Always verify your specific Lochinvar replacement part number in the service manual

although it requires a separate panel mount nut (typically part of a mounting kit)

Johnson Controls T-5220-1114 Temperature Transmitter Els PW 17895 the visible internal scale andJohnson Controls T 5220 1114 High Volume Output Pneumatic Temperature Transmitter, 0 to 100 Operating Temperature Range, 40 to 230 Degree Element Temperature Limit, Copper Bulb with 4' Copper Capillary, 3 to 15 Psig Transmitter Output Pressure Range, 1000 SCIM Output Flow Capacity, 25 SCIM Air Consumption, 20 Psig Supply Pressure, 1 8" NPT Barbed Fittings for 5 32" or 1 4" OD Polytubing