General Operation - Lochinvar ArmorX2 1.3 Service Manual

1
Service

General Operation

How the water heater operates
The Armor X2 uses two (2) advanced stainless steel heat
exchangers and two (2) electronic control modules that allow
fully condensing operation. The blowers pull in gas and
air and push flue products out of the water heater through
the heat exchangers and flue piping. The control modules
regulate blower speeds to control total water heater firing
rate. The gas valves sense the amount of air flowing into the
water heater and allow only the right amount of gas to flow.
Sequence of operation
Table 1A shows control module normal sequences of
operation for each individual control module. Additionally,
the control modules are programmed to synchronize their
combined modulation rates in order to maximize total water
heater efficiency.
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Access modes
User
The user can view all of the settings on the LCD screen. By
entering the user password (0704), the user can adjust the
User Set Point, Outdoor Shutdown, Night Setback, Boost,
HW Water Heater Output Set Point, Backlight Time, and
Backlight Brightness settings.
Installer
Most parameters are available only to the installer, accessible
only by entering the installer access code (5309).
Service Manual