Greenheck Microprocessor Controller (475595 IOM) TAP v2.10 April 2014 (RVE, ERCH-01, ERT-01) - Manual (Page 13)

C OOLING STATUS IS DISPLAYED , ALONG WITH COMPRESSOR OPERATION . ( IF EQUIPPED )
This screen appears if a cooling option is provided.
Chilled Water: The Cooling Control % is directly proportional to the 0-10 VDC
output signal.
0% Cooling = 0 VDC
100% Cooling = 10 VDC
The cooling control output can be configured to DIRECT / REVERSE acting,
along with the minimum and maximum output voltages by entering the
MANUFACTURER menu.
Packaged DX Cooling: The Cooling Control displays internal cooling ramp as a
percent. Compressor operation is displayed when engaged.
• D = Digital Scroll Compressor Operation
• 1 = First Staged Compressor Operation
• 2 = Second Staged Compressor Operation
Heat Pump Cooling: The Cooling Control displays internal cooling ramp as a
percent. Compressor operation is displayed when engaged.
• 1 = First Staged Compressor Operation
• 2 = Second Staged Compressor Operation
Cooling Status
Cooling Control: 000%
Compressor D 1 2
STATUS LINE
Heating Status
Heater Control: 000%
Hot Gas Reheat: 000%
Staged reheat is: ON
Compressor: 1 2
STATUS LINE
H
EAT AND REHEAT OPERATION IS DISPLAYED
. (
IF EQUIPPED
)
Heater Control displays the proportional percentage of the heater analog output.
Electric Heater: The Heater Control % is proportional to the 0-10 VDC signal
being sent to the SCR controller, located in the electric heater control center.
0% Heating = 0 VDC - 0 kW output
100% Heating = 10 VDC - Max kW output
Hot Water: The Heater Control % is proportional to the 0-10 VDC signal being
sent to the heating control valve (BY OTHERS). The heating control output can be
configured to DIRECT / REVERSE acting, along with the minimum and maximum
output voltages by entering the MANUFACTURER menu.
0% Heating = 0 VDC
100% Heating = 10 VDC
Indirect Gas: The Heater Control % is proportional to the 0-10 VDC signal being
sent to the indirect gas furnace controller, located in the indirect gas control
center. The first stage is on at 1% Heater Control. The furnace will then modulate
proportionally from minimum to maximum capacity.
0% = 0 VDC – OFF
1% = 0 VDC – MINIMUM TURNDOWN ENABLED
1 - 100% = 0 - 10 VDC = FURNACE MODULATION
Heat Pump Heating: The Heater Control % displays internal heating ramp as a
percent. Compressor operation is displayed when engaged.
• 1 = First Staged Compressor Operation
• 2 = Second Staged Compressor Operation
Hot Gas Reheat:
If hot gas reheat is staged control:
“Staged reheat is: ON/OFF” will indicate operation.
If hot gas reheat is modulating bypass damper control:
0% = OFF
1% - 100% = 4 - 10 VDC = AIRFLOW DAMPER MODULATION
If hot gas reheat is modulating valve control:
0% = OFF
1% - 100% = 0 - 10 VDC = HOT GAS REHEAT VALVE MODULATION
13 DDC Controller for Tempered Air Products
®