Complete Assembly: Includes a high-temp gasket (part 68-21812-04) to prevent carbon monoxide leaks and ensure immediate sealing

How do the auxiliary switches function on this model

It supports NTC and PTC temperature sensors

it is compatible with chilled or hot water containing up to 60% glycol

It features an equal percentage flow characteristic

Heil Quaker ICP 1184422 Limit Switch R-134A Complete Assembly: Includes a high-tempThe Heil Quaker ICP 1184422 Limit Switch is a high precision safety component engineered for critical thermal regulation within residential furnaces. Designed with a normally closed circuit, this component functions as a primary high limit safety, preventing dangerous heat exchanger temperatures by interrupting the burner circuit if conditions exceed factory parameters. Specifically rated as an L170 20F limit switch, this device features a fixed open