Status Display Screens - Lochinvar KNIGHT 399 Installation & Operation Manual

11
Operating information
By using the Previous/Next ( ,
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
#1
Press the Next
#2
Press the Next

Status Display Screens

) arrow keys on the SMART SYSTEM display panel, you can navigate through the eight (8)
Display shows:
BLR: OFF
Standby
Set Point Met
Prepurge
Ignition
SH***% Rate
Postpurge
Service
OUT: ***.*F(***)
***.*F
Open
Shorted
arrow key on the SMART SYSTEM display to access Screen #2.
IN: ***.*F
***.*F (***)
Open
Shorted
RISE: ***.*F
arrow key on the SMART SYSTEM display to access Screen #3.
(continued)
Description
The unit has been turned OFF by the Enter/Reset button on the
SMART SYSTEM display panel.
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.
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.
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.
The unit has begun a 5 second spark period to ignite the main burner.
The unit has fired and is running at the displayed percentage.
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.
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.
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.
If the outlet sensor has not been selected as the control sensor, only
the outlet temperature will be displayed.
The control does not detect the outlet sensor.
The outlet sensor wires or the sensor itself has become shorted.
If the inlet sensor has not been selected as the control sensor, only the
inlet temperature will be displayed.
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.
The control does not detect the inlet sensor.
The inlet sensor wires or the sensor itself has become shorted.
The difference between the inlet temperature and the outlet
temperature.
Installation & Operation Manual
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