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Installation & Operation Manual
61
11 Operating information (continued)
Status Display Screens
By using the Previous/Next (, ) arrow keys on the SMART SYSTEM display panel, you can navigate through the eight (8)
display screens. Each screen will contain two (2) viewable items. The following is a description of the individual items and what
they can display:
Screen Display shows: Description
#1
BLR: OFF
The unit has been turned OFF by the Enter/Reset button on the
SMART SYSTEM display panel.
Standby
The unit has not received a call for heat from a remote thermostat nor
has it received a call for heat from a DHW thermostat.
Set Point Met
The unit has met the water temperature set point, but is still receiving
a call for heat from either a remote thermostat or a DHW thermostat.
Prepurge
The unit has initiated a 10 second purge period on a call for heat.
Note: On the 800 model the unit will initiate a 20 second purge
period on a call for heat.
Ignition
The unit has begun a 5 second spark period to ignite the main burner.
SH***% Rate
The unit has fired and is running at the displayed percentage.
Postpurge
The call for heat has been satisfied and the unit runs the fan for an
additional 10 seconds to clear the combustion chamber and vent
system of residual flue products.
Service
The unit has been placed in a temporary mode that will allow the unit
to fire at 100% of rate for the purpose of combustion analysis.
OUT: ***.*F(***)
When the outlet sensor has been selected as the control sensor
(default), the control will display the outlet temperature as well as the
set point in parenthesis.
***.*F
If the outlet sensor has not been selected as the control sensor, only
the outlet temperature will be displayed.
Open
The control does not detect the outlet sensor.
Shorted
The outlet sensor wires or the sensor itself has become shorted.
Press the Next arrow key on the SMART SYSTEM display to access Screen #2.
#2
IN: ***.*F
If the inlet sensor has not been selected as the control sensor, only the
inlet temperature will be displayed.
***.*F (***)
When the inlet sensor has been selected as the control sensor, the
control will display the inlet temperature as well as the set point in
parenthesis.
Open
The control does not detect the inlet sensor.
Shorted
The inlet sensor wires or the sensor itself has become shorted.
RISE: ***.*F
The difference between the inlet temperature and the outlet
temperature.
Press the Next arrow key on the SMART SYSTEM display to access Screen #3.