field-configurable electronic low water cut-off (LWCO) engineered for both steam and hot water boilers

This model includes integral field-adjustable limit stops and a test port for pressure verification without cover removal

to ensure proper phase shift and torque

leak-proof interface suitable for various system configurations

the 10k ohm thermistor should read approximately 10

Resideo TK300-30A-1FM Boiler Trim Kit 320074-702 field-configurable electronic low water cut-offThe 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