User’s Information Manual
16
4
SMART SYSTEM control module
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.
Ignition
The unit has begun a 5 second spark period to ignite the main
burner.
Run***% 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 grounded.
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 grounded.
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.
