LC-VAC3000-0 and LC-IOM3711-0 wiring - Verasys - LIT-12013067 - LC-IOM3711-0 - LC-VAC1000-0 - LC-VAC3000-0 - Field Device - VAC1000 - VAC3000

Verasys Constant Volume Controller Application Note

Brand
Verasys
Product name
VAC1000
VAC3000
Document type
Application Note
Document number
LIT-12013067
Revision date
2021-10-13
Language
English

Figure 1 shows the wiring for the LC-VAC3000-0. Figure 2 shows the wiring necessary to expand the LC-VAC3000-0 with the LC-IOM37011-0. When you add LC-IOM3711-0, you must use address 4.

Figure 1. Wiring diagram VAC3000-0

Table 1. Wiring diagram LC-VAC3000-0

No.

Description

Object Name

Johnson Controls part number

Required/optional

1

Mixed air damper output

MAD-O

Actuator (part requires sizing)

Required: Use this input when you have a mixed air damper with a two-position option, or use as an economizer. Output range is adjustable but assumed to be voltage.

2

Cooling output

CLG-O

Actuator (part requires sizing)

Optional: Required when you have proportional cooling. Output range is adjustable but assumed to be voltage.

3

Heating output

HTG-O

Actuator (part requires sizing) or signal to proportional gas valve

Optional: Required when you have proportional heating. Output range is adjustable but assumed to be voltage

 

Staged unit

Heat pump

 

4

Speed control

5

Fan

6

Heating stage 1

Supplemental heating stage 1

HTG1-C /

SHTG1-C

CTI

Optional: If you have staged heating or if you have a heat pump with supplemental heat, use this binary output. You require a conventional thermostat interface or field relays.

7

Heating stage 2

Supplemental heating stage 2

HTG2-C /

SHTG2-C

CTI

Optional: If you have 2+ stages of heat or if you have a heat pump with 2 stages of supplemental heat, use this binary output. You require a conventional thermostat interface or field relays.

8

Heating stage 3

 

HTG3-C

CTI

Optional: If you have 3+ stages of heat, use this output. You require a conventional thermostat interface or field relays.

9

Heating stage 4

 

HTG4-C

CTI

Optional: If you have 4+ stages of heat, use this output. You require a conventional thermostat interface or field relays.

10

Cooling stage 1

Compressor 1 command

CLG1-C/

COMP1-C

CTI

Optional: If you have staged cooling or if you have a heat pump, use this binary output. You require a conventional thermostat interface or field relays.

11

Cooling stage 2

Compressor 2 command

CLG2-C/

COMP2-C

CTI

Optional: If you have 2+ stages of cooling or if you have a heat pump with 2 stages, use this binary output.You require a conventional thermostat interface or field relays.

12

Cooling stage 3

Reversing valve

CLG3-C/

REV-C

CTI

Optional: If you have 3+ stages of cooling or if you have a heat pump, use this binary output. You require a conventional thermostat interface or field relays.

13

Cooling stage 4

Not used

CLG4-C

CTI

Optional: If you have 4+ stages of cooling, use this output. You require a conventional thermostat interface or field relays.

14

24 VAC COM

24 VAC COM

 

15

24 VAC

24 VAC

16

24 V COM power transformer

17

24 V HOT power transformer

18

From last device

19

To next device

20

NS zone sensor

   

Required: If you do not control from the RA-T sensor.

21

Zone sensor

   

Optional: The connector is located on the back of the sensor. Wire the sensor bus to any other network sensors in a daisy-chain configuration

22

Mixed air damper feedback

MAD-FB

N/A

Optional: Required when you want Title 24 economizer fault detection diagnostics as part of the unit sequence. It is assumed the actuators connected to the economizer have a voltage feedback signal. Input range is adjustable but assumed to be voltage.

23

Return air temperature

RA-T

TE-6311M-1

Optional: Use this input to control instead of a zone temperature sensor. If a zone temperature sensor is present it takes priority and the RA-T monitors only.

24

Return air CO2

RA-CO2

CD-W00-00-2

CD-P1000-00-00

Optional: Range 0ppm - 2000ppm / 0 VDC - 10 VDC

25

Outside air temperature

OA-T

TE-6313P-1

Required: Use this input if you have economizer control. This input is for a hardwired sensor. The controller has the option to data share an outside air temperature to the controller.

26

Mixed air temperature

MA-T

TE-6315M-1

Required: Use this input if you have proportional heating or cooling and an economizer. If you have staged heating and cooling, and you do not have water, you can use a supply air temperature for the economizer control.

27

Supply air temperature

SA-T

TE-6311M-1

Required: Use this input if you have an economizer and no mixed air temperature.

28

Fan status

SF-S

CSDECM-C35200

Optional: Use if you want a supply fan alarm. Fan status

29

Filter status

FILTER-S

P32AC-2C

FTG18A-600R

Optional

30

Purge status

PURGE-S

n/a

Optional

31

Service alarm

SERVICE-A

n/a

Optional: Dry contact input with a general service alarm.

32

Low temperature alarm

LT-A

A70HA-1C

TE-6001-8

Required: When you have water coils and an economizer.

33

Occupancy sensor

OCC-S

OLS-2100-1

RIBU1C

Optional: To reset a setpoint when a room is unoccupied.

Figure 2. Wiring diagram to add LC-IOM3711-0 to LC-VAC3000-0

Table 2. Wiring diagram to add LC-IOM3711-0 to LC-VAC3000-0
No. Description Object name Johnson Controls part number Required or optional

1

Hot gas bypass solenoid

HGBYP-C

RIBU1C

Optional: Use when you want to use a hot gas bypass coil to reheat when you dehumidify.

2

Humidifier: Control signal input 4

HUM-O/HUM-HL

HL-67N58N00P

Optional: Required when you have a humidifier. The high limit sensor is required to back the signal off when high discharge humidity is sensed.

3

Humidifier: Enable

HUM-C

RIBU1C

Optional: Use when you want to cycle the humidifier

4

Humidifier high limit: Control signal out

     

5

Humidifier high limit: Control signal int

HUM-O/HUM-HL

HL-67N58N00P

Optional: Required when you have a humidifier. The high limit sensor is required to back the signal off when high discharge humidity is sensed.

6

Humidifier high limit: Common

 

7

Humidifier high limit: 24 VAC

8

24 V COM power transformer

9

24 V HOT power transformert

10

Sensor bus. Wire with the sensor bus on the VAC in a daisy-chain configuration.

11

Zone humidity

ZN-H

HE-69130NS-0

Optional: Range: 0% - 100%/0VDC - 10VDC