allowing contractors to restore factory-spec regulation without replacing the entire housing

Constructed from wrot copper to ASTM B75 standards

this specific model features a solid faceplate with no setpoint windows to prevent end-user interference with the thermostat settings

replacing a fouled or incorrect orifice with a genuine #29 NG orifice can restore proper blue flame combustion

Vibration Reduction: Factory-balanced 2-blade design reduces mechanical stress on the fan motor bearings

Functional Devices-RIB TR175VA002 Transformer Els PW 17895 allowing contractors to restore factory-specFunctional Devices RIB TR175VA002 175VA 120 24V 2 Hub Transformer Replaces: AE 203