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 six (6)
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
WHR: 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 tank thermostat nor has
it received a call for heat from a tank sensor.
Set Point Met
The unit has met the water temperature set point, but is still receiving
a call for heat from either a tank sensor or a tank 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
The outlet temperature is 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 a tank sensor is installed, only the inlet temperature will be
displayed.
***.*F (***)
When a tank thermostat is installed, 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.
Status display screens
Installation & Operation Manual
55
Содержание 150 - 500
Страница 42: ...Installation Operation Manual 42 8 Field wiring Figure 8 3 Low Voltage Field Wiring Connections...
Страница 46: ...Installation Operation Manual 46 Figure 10 2 Operating Instructions Models 150 285 10 Start up...
Страница 47: ...Installation Operation Manual 47 10 Start up continued Figure 10 3 Operating Instructions Models 399 500...