Measurement:

APPLIANCE INITIAL SETUP
1. ON/OFF SWITCH
Set ON/OFF switch to ON position.
2. PREHEAT
This appliance has a pre-heat mode to reduce the time taken to produce hot water. This diagnostic model requires the appliance to have this function turned OFF, unless stated otherwise in setup.
Pre-heat is switched OFF when comfort switch is in the E position.
Pre-heat is switched ON when comfort switch is in the C position.
3. USER CONTROLS
Set DHW and CH temperature controls to maximum position.