Do I need to shut down the boiler to install this adapter

Is this spring compatible with the Sensus 121-8-HP

Key Benefits Universal Compatibility: Engineered as a direct OEM replacement part for diverse Reznor unit heaters and air handlers

use the S1-024-32068-001

Amana-Goodman PCBKF109V009S Control Board 318518-761 Do I need to shutThe Amana Goodman PCBKF109V009S is a high performance SRV PCB Control Board designed specifically for modern HVACR systems. This advanced furnace control circuit board serves as the central intelligence of your unit, coordinating essential functions including blower fan operation, igniter sequencing, and gas valve timing. Engineering to meet rigorous OEM HVAC replacement part standards, the PCBKF109V009S is the official direct replacement for