Resideo TK300-30A-1FM Boiler Trim Kit 318172-701 Technicians must verify the unit's

Technicians must verify the unit's manifold pressure and valve type (single-stage vs

or pressure switch lockout codes (such as "Open Pressure Switch") indicating insufficient static pressure

Integrating this furnace fan limit switch ensures optimal blower timing

Because this is an OEM part

Resideo TK300-30A-1FM Boiler Trim Kit 318172-701 Technicians must verify the unit'sThe Resideo TK300 30A 1FM Boiler Trim Kit is a comprehensive solution for field technicians performing boiler change outs or new hydronic installations. This professional grade boiler trim kit features a 4. 4 gallon TK300 30 expansion tank with a durable Butyl EPDM diaphragm, engineered to effectively manage hydronic system pressure in closed heating loops. The assembly includes a 1 inch AP400 cast iron air purger and an FV180 Goldtop air vent for