Lennox 78H11 Thermostat 319852-301 It maintains a pressure rating
Baker’s notes & crumb story
Description
Lennox 78H11 Thermostat 319852 301 It maintains a pressure rating It maintains a pressure rating of 0 110 PSI for #2 fuel oil (60 SSU) and #4 fuel oil (300 SSU) Contractors should inspect existing thermal limits and secondary HVAC replacement parts for signs of scorching or fatigue during the swap