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Service Manual
General Operation
How the water heater operates
The Armor water heater uses an advanced stainless steel heat
exchanger and an electronic control module that allows fully
condensing operation. The blower pulls in gas and air and
pushes flue products out of the water heater through the heat
exchanger and flue piping. The control module regulates blower
speed to control water heater firing rate. The gas valve senses the
amount of air flowing into the water heater and allows only the
right amount of gas to flow.
Sequence of operation
Table 1 shows control module normal sequences of operation
for water heating operation.
Access modes
User
The user can adjust water heating set point using the UP and
DOWN buttons at any time during normal operation. By
entering the USER code (0704), the user can also change
temperature units, time and date, and night setback settings. In
user mode, the following parameters can be viewed but not
changed: water heater model number; software version; total
operating hours, and total cycles.
Installer
Most parameters are available only to the installer, accessible
only by entering the installer access code (5309).
Saving parameters
To save parameters:
Press the ENTER/RESET button.
To keep parameter settings only for a current operating cycle:
Press the MENU/EXIT button 1 time to return to the parameter
listings; press again to return to the menu listings.