Laars Heating Systems E2407000 High-Tension Lead 319852-301 Models 500 and 600 utilize

Models 500 and 600 utilize a flow-through design that does not require a water level sensor assembly

and agricultural facilities

This specific model is engineered and optimized for R134A

you likely need a new rotary selector switch in addition to the knob

Laars Heating Systems E2407000 High-Tension Lead 319852-301 Models 500 and 600 utilizeThe Laars Heating Systems E2407000 High Tension Lead is an essential 34 inch HVAC ignition cable designed for high voltage transmission between the ignition module and the spark electrode. Built to handle the rigorous demands of commercial and industrial boilers, this 34 inch ZH lead ensures consistent arc generation for reliable gas ignition. In the field, a degraded high tension wire is a common culprit for intermittent ignition lockout or weak