If you have a broken Honeywell damper, don’t use these or you will end up replacing them again soon:
The Honeywell M847 or ARD or EARD or Hansen or Syncron motors are notorious for repeated failures when used in HVAD damper applications. This is usually due to a broken gear tooth or burned out motor. These are often referred to as “spring” motors because they rely on a spring to open. When 24VAC is applied to the motor, it draws over 6Watts when generated excessive heat especially in an attic that is already 120 degrees in the summer.
The issue with replacing these motors with something more reliable has traditionally been the shaft that is on the Honeywell damper is designed to ONLY fit this style of motor so it is easiest to just replace the motor with a new version of this low-quality motor. In the past, the only alternative to this was to replace the entire damper. Most of the time, the “blade” and “can” of the damper are still in great working condition even though the motor has failed so it is difficult to justify the time and cost of a full damper replacement in order to upgrade to a more reliable motor.
SO, Ecojay has released a product that allows the much more reliable Belimo motor to be used as a replacement. This “Shaft Adapter” allows for a simple and easy upgrade that will last many years longer than any alternative (and, at a lower cost).
The video below shows, in detail how to make this upgrade.
Ecojay Part # APDM-B60
