Enerco HS300ID - Manual (Page 6)

6 ENERCO GROUP, INC. |Indirect Fired Portable Heater Operating Instructions and Owner’s Manual
EV Fuel Solenoid Valve
TR Ignition Transformer
M Motor
SL Warning Lamp
TS Safety Thermostat
FS Fuse
FC Flame Sensor
PL Reset Button
IN Switch
TH Room Thermostat (Optional)
FR Heated Filter (Optional)