Configuration menu options - Verasys - LC-VAC1000-0 - VAC1000

Supply Fan Type

Sets whether the fan is constant volume or uses a fixed variable strategy

Adjustable:

• Constant Volume Fan

• Fixed Variable Fan

Fan Cycling

Allows the fan to cycle off

Adjustable:

• No

• Yes

Cooling Device Type

Sets the type of cooling the device uses

Adjustable:

• None

• Proportional

• Staged

• Heat Pump

Number of Cooling Stages Installed

If you set the cooling device type to Staged, use this parameter to set the number of stages.

Adjustable:

0-4

Number of Heat Pump Stages Installed

If you set the cooling device type to Heat Pump, use this parameter to set the number of stages.

Adjustable:

1-2

Heating Device Type

Sets the type of heating the device uses

Adjustable if non-heat pump:

• None

• Proportional

• Staged

Adjustable if heat pump:

• Heat Pump

• Heat Pump with Sup Htg

Number of Heating Stages Installed

If you set the heating device type to Staged, this parameter sets the number of stages

Adjustable:

0-4

Number of Supp Heating Stages Installed

If you set the heating device type to Heat Pumpwith supplemental heating, this parameter sets the number of supplemental heat stages

Adjustable:

1-2

Economizer Damper Type

This allows the system to define an economizer or a minimum outside air damper.

Adjustable:

• None

• Economizer

• Min OA

Economizer Fault Detection

Enables the economizer fault detection diagnostic sequences

Adjustable:

• Disable

• Enable

Humidity Enable

Enables the humidity control sequences

Adjustable:

• Disable

• Enable

Dehumidification Enable

Enables the dehumidification control sequences

Adjustable:

• Disable

• Enable

Heat Cool Diagnostics

Enables the heat cool alarms. The heat cool alarms use a supply air sensor to determine if the heating or cooling is working correctly.

Adjustable:

• Disable

• Enable

1

Mixed air damper output

2

Speed control for supply fan

Staged unit

Heat pump

3

Fan

Fan

4

Heating stage 1

Supplemental heating stage 1

5

Heating stage 2

Supplemental heating stage 2

6

Cooling stage 1

Compressor 1 command

7

Cooling stage 2

Compressor 2 command

8

Cooling stage 3

Reversing valve

9

Cooling stage 4

Not used

10

24 VAC COM

24 VAC COM

11

24 VAC

24 VAC

12

Mixed air damper output

13

24 V HOT power transformer

14

From last device

15

To next device

16

NS zone sensor. May have many options. Required if you do not control from RA-T sensor

17

Optional. Zone sensor. Connector on the back of the sensor.

Wire the sensor bus to any other network sensors in a daisy-chain configuration.

18

Optional. Return air temperature. Can be used to control instead of a zone temperature sensor.

19

Mixed air damper feedback. Required for Title 24 economizer fault detection diagnostics.

20

Optional. Outside air temperature. For a hardwired sensor. You can also data share the outside air temperature.

21

Mixed air temperature. Required if you have proportional heating or cooling and an economizer.

22

Supply air temperature. Required if you have an economizer and no mixed air temperature.

23

Service alarm. Optional. Dry contact input used to give a general service alarm.

24

Occupancy sensor. Optional. Used to reset setpoints when the room is unoccupied.

25

Low temperature alarm. Required when you have water coils and an economizer.

26

Fan status. Optional.

1

Continuation of unit terminal strip: Heating stage 3

2

Continuation of unit terminal strip: Heating stage 4

3

Continuation of unit terminal strip: 24VAC

4

Hot gas bypass solenoid

5

Humidifier: output 0 VDC - 10 VDC

6

Humidifier enable

7

Cooling output

8

Heating output

9

Humidifier high limit: Control signal out

10

Humidifier high limit: Control signal in

11

Humidifier high limit: Common

12

Humidifier high limit: 24 VAC

13

24 V COM power transformer

14

24 V HOT power transformer

15

Sensor bus. Wire to the sensor bus on the VAC1000 in a daisy-chain configuration

16

Optional sensor: Purge command

17

Optional sensor: Filter status

18

Optional sensor: Return air CO2

19

Optional sensor: Zone humidity