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XT-70 Control Panel 42
E2 Parameters Definition:
HI_DEV_TIMER: High deviation timer. This timer will determine how long the plenum
temperature can remain above the high deviation point before a high deviation
alarm will occur. The default setting is 10 and the unit of measure is
minutes.
LO_DEV_TIMER: Low deviation timer. This timer will determine how long the plenum
temperature can remain below the low deviation point before a low deviation
alarm will occur. The default setting is 3, and the units of measure are
minutes.
COOL_AIR_TIMER: Cooling Air Available Timer. When the mode changes from Cooling to Standby,
this timer will be active. This setting will force the mode to stay in Standby until
this amount of time elapses. This is to prevent short cycling when OSA cooling
is marginal. The OSA needs to be within 3° for this to be active. The
default setting is 3 minutes.
KP_B This is a Onion parameter. KP_B is the proportional value for the burner PID.
The default setting is 10.
C_H_TIME / KI_B C_H_TIME is a potato parameter. This is active when either the Aux 1 or Aux 2
Config byte is set to 05. Which ever output is selected is connected to the Heat
output, so either the heat or aux output will turn on the return air heater. The
purpose of this is to help control the condensate on some of the older storages.
The C_H_Temp setting is in hole numbers and is used to set the threshold
when the outside air temperature drops below it will turn on. This parameter
can be either plus or minus.
IF OSA IS LESS THAN C_H_TEMP FOR C_H_TIME MINUTES TURN ON
HEAT.
KI_B is a Onion parameter. KI_B is the integral value for the burner PID.
The default setting is 5.
C_H_TEMP / KD_B C_H_TEMP is a potato parameter. This is the time in minutes that the outside
air must be less than C_H_TEMP before the heat is turned on.
This is a Onion parameter. KD_B is the derivative value for the burner PID.
The default setting is 1.
UPDATE_TB This is a Onion parameter. UPDATE_TB is the update time for the burner PID.
The time is in ms. The default setting is 100.
FAN_FAIL_TIMER: Fan Failure Timer. When the fans are given a signal to start, this timer will start
timing and will be reset once the fans are proven. If the fans fails to start, the
system will go into Fan Fail Alarm mode after this amount of time elapses. The
default setting is 1 minute. A setting of 0 will disable the Fan Fail Alarm.
CELL_FAIL_TIMER: Cell Pump Failure Timer. When the cell pump is given a signal to start, this
timer will start timing and will be reset once the cell is proven. If the pump fails
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