FORD 2014 E-450 v.1 - Manual (Page 111)

• Keep plug terminals clean and free of dirt and corrosion.
• Make sure the heater system is checked for proper operation before
winter.
Using the Engine Block Heater
Make sure the receptacle terminals are clean and dry before use. To
clean them, use a dry cloth.
The heater uses 0.4 to 1.0 kilowatt-hours of energy per hour of use. The
system does not have a thermostat. It achieves maximum temperature
after approximately three hours of operation. Using the heater longer
than three hours does not improve system performance and
unnecessarily uses electricity.
110 Starting and Stopping the Engine
2014 Econoline (eco)
Owners Guide gf, 1st Printing, November 2012
USA (fus)