Orion-system VCM-X/RNE Controller Manual de usuario descargar pdf (Pagina 26)

Zone

VCM-X CONFIGURATION

VCM-X / RNE Operator Interface SD

VCM-X Conﬁ guration Screens

Conﬁ guration Screen #3 - HVAC Mode Enable

VCM-X Cnfg ID 59

HVAC Mode Enable

Supply Air

Use < Or > To Change

Select the Temperature Sensor that will determine the Heating, Cooling,

or Vent Mode of operation. The selections are:

 Supply Air

This is typical for VAV applications. Occupied Cooling

with Morning Warm-up.

 Outdoor Air

This is for 100% Outdoor Air (MUA) units.

Dehumidiﬁ cation utilizes a Dewpoint Calculation if

equipped with an Outdoor Air Humidity Sensor.

 Space Temperature

This is for any unit that conditions a space and is not 100%

Outdoor air. Occupied/Unoccupied Heating, Cooling, and

Vent Modes of operation.

 Return Air

This selection can be used when an Average Building

Temperature (the Return Air Temperature) needs to

determine Heating, Cooling, and Vent Modes of operation.

 Supply Air/Tempering

This selection is for VAV “cooling only” applications where

because of cold outdoor temperatures, even at minimum

damper position, you may need to enable heat to maintain

the cooling near its Cooling Supply Air Setpoint. When

heat is enabled during this sequence, it will control to

a non-adjustable setpoint that is 2ºF less than the Cooling

Supply Air Setpoint. Includes a Morning Warm-up

sequence.

Conﬁ guration Screen #4 - HVAC Reset Source

VCM-X Cnfg ID 59

HVAC Reset Source

No Reset

Use < Or > To Change

The Supply Air Heating and Cooling Temperature Setpoints can be re-

set using various input sources. Default is No Reset. Select the desired

Reset Source for Supply Air Temperature Reset. The Single Zone VAV

option should be selected in applications where the Supply Fan VFD

speed is reset based on the Space Temperature. If you select No Reset,

then neither the Supply Air Setpoint nor the Supply Fan VFD Reset will

occur. The selections are:

 No Reset  Fan VFD Percentage

 Space Sensor  Outdoor Sensor

 Return Air Sensor  Single Zone (SZ) VAV

 Remote Reset Signal  SZ VAV with CV Heating

Conﬁ guration Screen #5 - Reset Interval Rate

VCM-X Cnfg ID 59

Reset Interval

Rate...: 20 s

[1-255 Seconds]

If you selected Space or Return Air Temperature Reset in Screen #4,

enter a value in seconds between 1-255. This value determines how fast

the Supply Air Temperature Setpoint is adjusted as the Reset Source

changes. Default is 20 seconds.

Conﬁ guration Screen #6 - Dehumidiﬁ cation

Control

VCM-X Cnfg ID 59

Dehumidification

Control: NO

Use < Or > To Change

Select YES if your system requires Dehumidiﬁ cation Control. Default

is NO.

Conﬁ guration Screen #7 - Dehumidiﬁ cation

Priority

VCM-X Cnfg ID 59

Dehumidification

Priority: NO

Use < Or > To Change

Select YES if Dehumidiﬁ cation is a Priority during the Occupied Mode.

Priority means that the Cooling stages will activate based on Coil Tem-

perature and Reheat will be used regardless of Heating, Cooling, or Vent

Modes of Operation. Default is NO.

Conﬁ guration Screen #8 - Dehumidiﬁ cation

Unoccupied

VCM-X Cnfg ID 59

Dehumidification

Unoccupied: NO

Use < Or > To Change

Select YES if Dehumidiﬁ cation is required during the Unoccupied

mode. Unoccupied Dehumidiﬁ cation is activated based on Indoor Air

Humidity only. Default is NO.

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Orion-system VCM-X/RNE Controller Manual de usuario Pagina 26

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