Honeywell T874H Multistage Thermostat Instruction Manual
Honeywell T874H Multistage Thermostat APPLICATION The T874H,Q,W Multistage Thermostats provide 24 to 30 Vac control for heating and cooling systems as listed in Table 1. Table 1. Heating and Cooling Stages T874 Model Stage Ha Q W Heating Stages 1…