Greenheck Microprocessor Controller (475595 IOM) TAP v2.10 April 2014 (RVE, ERCH-01, ERT-01) - Manual (Page 34)

Temperature Scale
Select: Fahrenheit
Display Properties
Buzzer: Disable
Backlight: Always
On
Timeout: 300s
T
HIS SCREEN ALLOWS THE USER TO ADJUST WHAT UNIT SYSTEM THE CONTROLLER
SHOULD DISPLAY AND SOME OTHER DISPLAY PROPERTIES .
The temperature unit of measurement can either be set to Fahrenheit or Celsius.
If using Celsius, the user will need to manually convert the factory default
parameters in each menu.
The display buzzer is only applicable when an optional remote interface panel is
attached to the controller. If an alarm were to occur, the remote display panel would
begin buzzing loudly (if the buzzer was enabled) and would show the alarm status.
The controller and/or remote display LED backlight can be configured to shut off
after the Timeout period. Otherwise, the LED backlight will always be on.
T HIS SCREEN ENABLES THE VISIBILITY OF ALL I/O RELATED SCREENS .
The controller automatically hides screens related to irrelevant I/O points.
Enabling this functionality will give the user visibility of all i/O related screens and
will also make these values available for monitoring on a BMS.
I/O Screens
Enable all I/O
screens? Yes
T
HIS SCREEN ALLOWS ADJUSTMENT OF THE BUILDING PRESSURE CONTROL LOOP
.
This screen only appears if unit is equipped with a building pressure sensor.
The controller utilizes a PI loop control for Building Pressure control. To speed up
the reaction time, decrease the integration time. For slower reaction time, increase
the integration time. For less overshoot, increase the band. When making
adjustments, make them in small increments and test the system to determine if
the new setting is adequate prior to further adjustment.
Building Ps Controller
Integration: 200s
Band .100
”wc
T
HIS SCREEN ALLOWS ADJUSTMENT OF THE
CO2
CONTROL LOOP
.
This screen only appears if unit is controlled by a CO2 sensor.
The controller utilizes a PI loop control for CO2 control. To speed up reaction time,
decrease the integration time. For slower reaction time, increase the integration
time. For less overshoot, increase the band. When making adjustments, make
them in small increments and test the system to determine if the new setting is
adequate prior to further adjustment.
CO2 Controller
Integration: 600s
Band 500
PPM
T
HIS SCREEN ALLOWS ADJUSTMENT OF THE DUCT PRESSURE CONTROL LOOP
.
This screen only appears if equipped with a duct pressure sensor.
The controller utilizes a PI loop control for Duct Pressure control. To speed up
reaction time, decrease the integration time. For slower reaction time, increase
the integration time. For less overshoot, increase the band. When making
adjustments, make them in small increments and test the system to determine if
the new setting is adequate prior to further adjustment.
To allow the duct pressure to stabilize, the supply fan will remain at minimum
speed for Min On Time. This prevents unnecessary overshoot at start-up.
To minimize excessive duct pressurization, the Overshoot Limit can be enabled.
This will allow the user to enter an offset from the duct pressure set point. If the
duct pressure exceeds the set point by the value of Hi Limit Diff (Factory Default =
0.50 inch wc), the supply fan will reset to its minimum speed.
WARNING: MECHANICAL OVER-PRESSURIZATION SHOULD BE PROVIDED!
Duct Pressure Controller
Integration: 15s
Band 5.00”wc
Min On Time: 15s
Overshoot Limit: YES
Hi Limit Diff: 0.50”wc
34 DDC Controller for Tempered Air Products
®