Armstrong Furnace R33191A001 Relay no additional RTV or liquid

no additional RTV or liquid sealant is required unless specified by the latest service manual for your specific boiler series

When field conditions prevent direct-coupling

While technically an air pressure switch

If the system is cycling on the manual reset limit

Is the 37-26 gasket compatible with both 47 and 247 models

Armstrong Furnace R33191A001 Relay no additional RTV or liquidThe Armstrong Furnace R33191A001 Relay is a mission critical Time Delay Relay (TDR) designed for HVAC blower motor control and sequence timing. This SPST (Single Pole Single Throw) component is engineered to manage the delayed start and stop functions of Armstrong furnace blowers, ensuring optimal heat exchanger cooling and improved system efficiency. Operating primarily on a 24V control circuit, this relay prevents rapid cycling and reduces