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The MESTEK j31r04092 is an open drip-proof (ODP) propeller fan motor designed for use in GG Series unit heaters rated from 90,000 to 120,000 BTU/h. This motor drives the propeller fan assembly that circulates heated air across the heat exchanger and into the conditioned space. It is a direct replacement component intended for licensed HVAC technicians performing routine service or field repairs on gas-fired unit heaters. The ODP enclosure allows for ventilation cooling of the motor windings while providing basic protection against dripping liquids in typical indoor commercial or industrial installations.
This fan motor is suited for GG Series unit heater applications in the 90,000 to 120,000 BTU/h capacity range. Typical installation environments include commercial warehouses, garages, manufacturing facilities, and other large indoor spaces where gas-fired unit heaters provide primary or supplemental heat. This motor is installed as part of the fan and motor assembly by a qualified HVAC technician during scheduled maintenance or component-level repair.
Designed for use with MESTEK GG Series unit heaters rated 90,000 to 120,000 BTU/h. Confirm unit model number and existing motor specifications before installation.
Installation should be performed by a licensed HVAC technician. Disconnect and lock out all electrical power to the unit heater before removing the existing motor or any fan assembly components. Verify that the replacement motor shaft diameter, rotation direction, and mounting configuration match the original before energizing the unit. Follow all applicable local codes and the manufacturer service documentation when reassembling the fan and motor assembly.
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