Greenheck Microprocessor Controller (475595 IOM) TAP v2.10 April 2014 (RVE, ERCH-01, ERT-01) User Manual
Page 24
T
HIS
SCREEN
ALLOWS
THE
USER
TO
OVERRIDE
THE
HEATING
OPERATION
.
This screen only appears if a heating operation was provided with the unit.
When the Heating Control is in the MANUAL mode, use the arrow buttons to vary
the heating 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).
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. The furnace is subject to
minimum On/Off times and Heating Lockouts.
0% = 0 VDC – OFF
1% = 0 VDC – MINIMUM TURNDOWN ENABLED
1 - 100% = 0 - 10 VDC = FURNACE MODULATION
Heat Pump: The Heating % displays compressor engagement as a percent. The
compressors are subject to the minimum On/Off times and Heating Lockouts.
Compressors engage in sequence as described in the Compressor Staging
screen in the Manufacturer > Factory Settings menu.
Heating Override
Heating
Control:
Auto
Heating:
100%
T
HIS
SCREEN
ALLOWS
THE
USER
TO
OVERRIDE
THE
COOLING
OPERATION
.
This screen only appears if a cooling operation was provided with the unit.
When the Cooling Control is in the MANUAL mode, use the arrow buttons to vary
the cooling output.
Chilled Water: The Cooling % is directly proportional to the 0 - 10 VDC output
signal.
0% Cooling = 0 VDC; 100% Cooling = 10 VDC
Packaged Cooling and Heat Pump: The Cooling % displays compressor
engagement as a percent. The compressors are subject to the minimum
On/Off times and Heating/Cooling Lockouts. Compressors engage in sequence
as described in the Compressor Staging screen in the
Manufacturer > Factory Settings menu.
Cooling Override
Cooling
Control:
Auto
Cooling:
100%
T
HIS
SCREEN
ALLOWS
THE
USER
TO
OVERRIDE
THE
ENERGY
RECOVERY
WHEEL
PREHEATER
.
This screen only appears if an electric preheat frost control was provided with the
unit.
Wheel Preheat Override
Energy Recovery Wheel
Preheat
Control:
Auto
Preheater:
OFF
T
HIS
SCREEN
ALLOWS
THE
USER
TO
OVERRIDE
THE
ENERGY
WHEEL
OPERATION
.
This screen only appears if the unit is equipped with a VFD operated energy wheel.
When the Wheel Control is in the MANUAL mode, use the arrow buttons to alter
the wheel %. This is directly proportional to a 0 - 10 VDC signal being sent to the
energy wheel VFD.
Energy Wheel Override
Wheel Control:
Auto
Wheel:
100%
24
DDC Controller for Tempered Air Products
®