Installation & Operation Manual
48
Check flame and combustion
(continued)
4.
Place the water heater into the active position by pressing
the SHUTDOWN button on the display board (FIG. 11-1,
page 54) until
WHR:Standby
appears in the display
window.
5. Locate the pinhole button above the “R” in the Armor logo
on the display board (FIG. 11-1). Insert a thin wire (such as
a paper clip) into the hole and press the button once and
hold for 5 seconds to place the water heater into Service
Mode. In Service Mode the water heater will fire at ignition
speed and will then modulate up to full fire.
6. Insert the probe from a combustion analyzer into the hole
left by the removal of the flue temperature sensor.
7. Once the water heater has modulated up to full fire, measure
the combustion. The values should be in the range listed in
Table 10A below. The CO levels should be less than
150 ppm for a properly installed unit.
If the combustion is not within the specified range,
reference the Troubleshooting Section of the Armor Water
Heater Service Manual for possible causes and corrective
actions.
Set water heater operation
Set tank set point temperature
The UP and DOWN keys may be used during normal operation
to adjust the tank set point temperature. Once the desired
temperature is displayed, press the ENTER/RESET key to save
the new setting. If the ENTER/RESET key is not pressed, the
new setting will be used for the current heating cycle only. The
old setting will become active after the current heating cycle
ends.
Table 10A
Flue Products Chart
8.
Once the combustion analysis is complete, test the safety
shutoff device by turning the manual shutoff valve to the
OFF position and ensuring that the water heater shuts
down and registers an alarm. Open the manual shutoff
valve, reset the control, and return to Service Mode.
9.
Turn the main power off to the water heater and
replace the flue temperature sensor into the flue pipe
connection.
10. Place the water heater back into normal operation.
You must replace the flue gas temperature
sensor to prevent flue gas spillage into the
room. Failure to comply could result in
severe personal injury, death, or substantial
property damage.
WARNING
Natural Gas
Propane
CO
2
O
2
CO
2
O
2
8.0% - 10%
3.0% - 6.5%
9.0% - 11%
4.1% - 6.9%
10
Start-up
If a tank thermostat is used, set the water heater set point above
the setting of the tank thermostat. The SMART SYSTEM
control will use this set point to modulate the burner based on
the inlet temperature into the water heater. If a tank sensor is
used, set the water heater set point to the desired tank
temperature.
Verify WHR circulator mode
When the tank thermostat or tank sensor calls for heat, the
SMART SYSTEM control will turn on the water heater pump.
When the DHW call for heat ends, the water heater pump will
continue to run for a period of time. This pump delay is set at
the factory to 30 seconds. If a shorter or longer delay is desired,
the appropriate parameter in the control must be changed. See
the Armor Water Heater Service Manual for a detailed
explanation of this procedure.
