Orion System VCM-X/RNE Operator Interfaces - Manual (Page 46)

VCM-X / RNE SETPOINTS
VCM-X / RNE Operator Interfaces Technical Guide 46
Setpoint Screen #31 - Push-Button Override
Duration
VCM-X / RNE Spts
Push-Button Override
Duration....: 2.0 Hr
If the VCM-X or RNE has a Space Temperature Sensor installed and it
has the Override Button option, the HVAC unit will initiate Occupied
Mode any time the Override Button is pressed and held for less than
3 seconds. The Push-Button Override Duration Setpoint allows you to
adjust the amount of time the Override will remain in effect when the
Override Button is pressed. To cancel the Override before the Override
Duration time period expires, press the Override Button for 5 to 10
seconds.
Description Minimum Default Maximum
Push-Button
Override Duration
0.0 Hr 2.0 Hr 8.0 Hr
Setpoint Screen #32 - HVAC Mode Sensor
Slide Offset
VCM-X / RNE Spts
HVAC Mode Sensor
Slide Offset: 0ºF
If the VCM-X or RNE has a Space Temperature Sensor with the Slide
Adjust option installed, the HVAC Mode Enable Heating and Cooling
Setpoints can be offset by the HVAC Mode Sensor Slide Offset Setpoint
value. When the Slide Adjust bar is in the middle, no offset will occur.
If the Slide Adjust bar is moved all the way to the top of the Sensor, the
Heating and Cooling Setpoints will be raised by the Setpoint value you
have entered. If the Slide Adjust bar is moved all the way down to the
bottom of the Sensor, the Heating and Cooling Setpoints will be lowered
by the Setpoint value you have entered.
Description Minimum Default Maximum
HVAC Mode Sensor
Slide Offset
0ºF 0ºF 10ºF
Setpoint Screen #33 - Heat Pump Auxiliary
Heating Delay
VCM-X / RNE Spts
Heat Pump
Auxiliary Heating
Delay: 3 Min
If the VCM-X or RNE is confi gured to operate as a Heat Pump, the Heat
Pump Auxiliary Heating Delay Setpoint can be confi gured to provide
a time delay period before Auxiliary Heating Stages can be activated
once activation of the Compressor Heating Stages have been initiated.
Description Minimum Default Maximum
Heat Pump
Auxiliary Heating Delay
0 Min 3 Min 30 Min
Setpoint Screen #34 - Heat Pump Defrost
Setpoints
VCM-X / RNE Spts
Heat Pump Defrost
Defrost Tmp: 30ºF
Defrost Tmr: 30 Min
The Defrost Temp Setpoint is the Coil Suction Temperature at which
the unit will go into Defrost Mode during Heat Pump Heating opera-
tion. This unit will operate in the Defrost Mode for 10 minutes or until
the Head Pressure reaches 450 PSI. The Defrost Timer determines the
length of time between Defrost Modes. The length of the Defrost Timer
can be automatically be adjusted by the Adaptive Defrost Adjustment
described in Setpoint Screen # 35. This Defrost Mode is only available
if using the VCM-X Modular Controller or RNE Controller and a Head
Pressure Module. A Suction Pressure Transducer is also required. This
screen only applies if using the VCM-X Modular Controller or RNE
Controller with a Suction Pressure Sensor, a Head Pressure Module, and
Head Pressure Transducer(s). This screen does not apply if using the
VCM-X WSHP Controller and a WSHP Protection Module.
Description Minimum Default Maximum
Heat Pump Defrost Temp 0ºF 30ºF 50ºF
Heat Pump Defrost Timer 10 Min 30 Min 90 Min
Setpoint Screen #35 - Adaptive Defrost Adj.
Setpoint
VCM-X / RNE Spts
Adaptive Defrost
Adj. Setpoint: 0 MIN
Once initiated, the Defrost Mode is active until the Head Pressure reaches
450 PSIG or until a 10 minute timer has expired. Enter a value greater
than zero to enable the Adaptive Defrost Adjustment of the Heat Pump
Defrost Timer (Screen #34). This adjustment value will be subtracted
from the Heat Pump Defrost Timer if the Defrost Mode lasts the entire
10 minutes. A proportion of this adjustment value will be added to the
Heat Pump Defrost Timer if the Defrost Mode only lasts between 8
minutes and 0 minutes. This screen only applies if using the VCM-X
Modular Controller or RNE Controller with a Suction Pressure Sensor,
a Head Pressure Module, and Head Pressure Transducer(s). This screen
does not apply if using the VCM-X WSHP Controller and a WSHP
Protection Module.
Description Minimum Default Maximum
Adaptive Defrost Adj. 0 Min 0 Min 30 Min
VCM-X / RNE Setpoint Screens