you must install the provided 500-ohm resistor across the input terminals to convert the current signal to a 2-10VDC signal for the actuator logic

and a fresh hose fitting

Standard Flow Capacity: Ideal for standard flow commercial water-cooled systems requiring NPT pipe connections

Professional Grade Durability: Constructed with robust materials to withstand the high-temperature environments of industrial boiler rooms

Is any special lubricant required during installation

Laars Heating Systems R2004600 Gasket 322838-752 you must install the providedFor veteran HVACR technicians servicing high capacity hydronic systems, the Laars Heating Systems R2004600 Gasket is a critical replacement component for maintaining the pressurized integrity of the intake assembly. Specifically engineered as an Air Filter Gasket Kit, this 4 pound hardware set is essential for the RHCH and RHHV series, including models ranging from 1200 to 2400 MBH. Ensuring a precise seal at the air filter housing prevents bypass air