AAON MODGAS-XWR2, Техническое руководство

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MODGAS-XWR2 Technical Guide
LCD DISPLAY SCREENS
25
SA TEMP
XX.X
SUPPLY AIR TEMPERATURE
40ºF to 150ºF or 4ºC to 65ºC.
If no sensor is detected, screen will display “NO SENSR”
ACTIV SP
XX.X
ACTIVE SUPPLY AIR SETPOINT
Calculated from SAT Setpoint and Reset Setpoint in stand-alone mode.
In communicating mode, the Main Controller sends the setpoint.
The SAT Setpoint is set by the LCD Display in stand-alone mode and is
set by the Main Controller in communicating mode.
Alarms Menu and Slave Alarms
The alarm screens will display automatically when alarms are present.
NOTE: The
Slave Alarms Screen
will only display on the primary board
if a secondary board is present.
ALARMS
MENU
ALARMS
NO ALARMS:
This will be shown if there are no current alarms.
V1 NO DETECT:
Gas Valve 1 is not detected.
V2 NO DETECT:
Gas Valve 2 is not detected.
V1 NO PO FLAME:
No Proof of Flame Ignition Module input is
detected.
V2 NO PO FLAME:
No Proof of Flame Ignition Module input is
detected.
SAT CUTOFF:
This indicates a Supply Air Temperature Cutoff Alarm
condition which is activated if the SAT has risen above 200ºF. The
alarm will go away if after a fixed delay period the SAT has dropped
below 200ºF.
Alarm & Setpoint Screens
Setpoint Screens
Refer to the following map when navigating through the Set-
point Screens. From the SETPOINT Screen, press
<ENTER>
to
scroll through the screens and change setpoints. Use the
<UP>
and
<DOWN>
arrow keys to change your selections. Then press
<ENTER>
to save the new setpoint.
WARNING:
The
<ENTER>
key must be pressed after
changing setpoints for your entries to be saved
for subsequent power-ups.
NOTE: When the MODGAS-XWR2 is operating in Commu-
nications Mode, these setpoints screens will not appear
on the LCD display because they are controlled by the
Main Controller.
SETPOINT
FAN SPEED
LOW, HIGH, OFF
FAN SPEED STATUS
Low, High, Off
SLAVE
ALARMS
SAT SP
40-200°F
5-93°C
HEATING SUPPLY AIR TEMPERATURE SETPOINT
This is the target temperature while the heating is enabled. If you are
using the reset signal, this is the setpoint it will calculate to at zero volts.
The Setpoint Screen will display only in stand-alone mode.
Minimum Default Maximum
40°F
5°C
120°F
49°C
200°F
93°C
SAT FAIL ERROR:
The Supply Air Temperature sensor has been
disconnected for more than 60 seconds. This will cause the Heat to be
disabled. This alarm will be disabled when the sensor is reconnected or
detected.
COMM LOSS:
Communications have been lost with the main
controller. This alarm will disable when communications resume.
12 RELAY BOARD COMM LOSS:
Communications have been
lost with the 12 Relay Expansion Board. This alarm will disable when
communications resume.
STAGE 1 FAILURE:
Indicates a failure to ignite Stage 1 Heat.
STAGE 2 FAILURE:
Indicates a failure to ignite Stage 2 Heat.