Ford TOURNEO COURIER Owner's Manual page 97

Starting and Stopping the Engine
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.
95
Tourneo Courier/Transit Courier (C4A) Vehicles Built From: 19-06-2014, M1 Kombi/M1 Kombi Van/N1 Kombi/N1 Kombi Van/Van, ET7J-19A321-AKB (CG3621en) enGBR, Edition date: 04/2014,