Greenheck Microprocessor Controller v3.0 (469690) - Manual (Page 11)

11
Heater loop
override.
Heating:AUTO
Loop
output:000%
THE USER CAN OVERRIDE THE HEATING OPERATION .
This screen only appears if a Heating option was provided with the unit.
To manually override the heating, adjust the Heating status from AUTO to MANUAL.
When the Heating loop override is in MANUAL mode, use the arrow buttons to vary the
% output.
Hot Water Coil: The Loop Output % is directly proportional to a 0-10 VDC or 2-10 VDC
signal being set to the hot water valve.
000% = 0 VDC = Full Closed; 100% = 10 VDC = Full Open
000% = 2 VDC = Full Closed; 100% = 10 VDC = Full Open
Electric Heater: The Loop Output % is directly proportional to a 0-10 VDC signal being
sent to the SCR controller in the electric heater’s control center.
000% = 0 VDC = 0 kW output
100% = 10 VDC = Maximum kW output
Indirect Gas Furnace: The Heater Control % is directly proportional to a 0-10 VDC
signal being sent to the indirect gas furnace control board. Where the first stage is full
ON at a 1% Heater Control. Once the Heater Control reaches 50%, the second stage
modulates between 50% and 100% output.
001% - 049%: First stage: ON, Second stage: OFF
050% - 100% First stage: ON, Second stage: Modulating between 50%
and 100% output
Hot gas reheat loop
override
Hot gas: AUTO
Hot gas: OFF
THE USER CAN OVERRIDE THE HOT GAS REHEAT OPERATION
.
This screen only appears if the On/Off Hot Gas Reheat option was provided with the
unit.
To manually override the Hot gas reheat loop, adjust the Hot gas status from AUTO to
MANUAL. When the Hot Gas Reheat loop is in MANUAL mode, use the arrow buttons
to open or close the HGRH valve (ON = Open, OFF = Closed).
Hot gas reheat loop
override
Hot gas: AUTO
Loop output:000%
THE USER CAN OVERRIDE THE HOT GAS REHEAT OPERATION
.
This screen only appears if the Modulating Hot Gas Reheat option was selected with
the unit.
To manually override the Hot gas reheat loop, adjust the Hot gas status from AUTO to
MANUAL. When the Hot Gas Reheat loop is in MANUAL mode, press the up and down
arrow to vary the Loop output %. The Loop output % is directly proportional to a 0-10
VDC signal being sent to the HGRH controller.
000% = 0 VDC = Full Closed
100% = 10 VDC = Full Open
Energy recovery wheel
preheater
Preheater:AUTO
Preheater:OFF
THE USER CAN OVERRIDE THE ENERGY RECOVERY WHEEL PREHEATER .
This screen only appears if the Electric Preheat Frost Control option was provided
with the unit.
To manually override the Electric Preheater, adjust the Preheater status from AUTO to
MANUAL. When the Energy Recovery wheel preheater is in MANUAL mode, use the
arrow buttons to turn the Electric Preheater ON or OFF.
End of manual
overrides
MANUAL OVERRIDE MENU - continued