Honeywell #T651A3018, Medium Duty Line Voltage Thermostat, 44-86F Compatible Boiler_Titusville Lockout models have external manual

Lockout models have external manual reset button

SMITH PART #01-3702 - Front Section with flange connection* for 28A/RTS/HE Series

3/4" Viega Propress Connection Zone Valve w/ End Switch

Test button checks burner circuit to ensure proper control operation without lowering the water level

PEERLESS BOILER PART #90907 - BLOCK SPLIT 64-08&64-10 RH KD

Honeywell #T651A3018, Medium Duty Line Voltage Thermostat, 44-86F Compatible Boiler_Titusville Lockout models have external manualHoneywell #T651A3018, Medium Duty Line Voltage Thermostat, 44 86F Light Duty Line Voltage Thermostats control line voltage valves, motors, contractors, electric heat, elements, duct furnaces, and fan coil units in heating cooling systems. Product Features Automatic heating anticipation. Mount on standard vertical or horizontal outlet box.