What is the primary function of the SPDT contacts in this switch

Built as a PSC motor (Permanent Split Capacitor)

and industrial boiler applications

The BASO H91DG-2C REVB is a 24V automatic gas valve designed specifically for low-voltage control systems in commercial and industrial heating applications

Are any special tools required for the 5F40276 installation

Carrier HC37GE227 Motor 318820-201 What is the primary functionThe Carrier HC37GE227 is a heavy duty 1 5 HP condenser fan motor designed for high static pressure applications in residential and light commercial HVAC systems. Operating at 1100 RPM with a voltage range of 208 230V, this permanent split capacitor (PSC) motor is an OEM direct replacement, ensuring the correct torque profile and thermal protection parameters for Carrier, Bryant, and Payne outdoor units. Built with a 48 frame diameter and an all angle