Johnson Controls T-4000-3140 Plastic Cover it must be water-primed during

it must be water-primed during installation to prevent positive pressure vent gases from escaping through the drain lines

it ensures exact fitment and calibration for Berko and QMark electric heaters

it safely handles internal temperatures up to 155°C (311°F)

This part identifies the motor mount bracket itself

doing so risks cracked heat exchangers and fire hazards

Johnson Controls T-4000-3140 Plastic Cover it must be water-primed duringProfessional grade Johnson Controls T 4000 3140 plastic covers are engineered for high performance pneumatic room thermostat applications. This horizontal mount faceplate is compatible with nearly all T 4000 series instruments, excluding the T 4100 and T 4600 models. Constructed from durable, white thermoplastic, the T 4000 3140 features a built in Fahrenheit Celsius thermometer to provide clear ambient temperature feedback for facility maintenance