LC-VAC1000-0 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-VAC1000-0. Figure 2 shows the wiring necessary to expand the LC-VAC1000-0 with the LC-IOM37011-0.

Note: When you add LC-IOM3711-0, you must use address 4.
Figure 1. LC-VAC1000-0 wiring diagram

Note: Terminals may vary based on speed control only on units that are fixed variable. The number of stages can vary with configuration. Heating stages 3 and 4 wire to the LC-IOM3711-0.
Table 1. Wiring diagram LC-VAC1000-0
No. Description Object name Johnson Controls part number Required or 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

Speed control for supply fan

SF-O

VFD

 
 

Staged unit

Heat pump

 

3

Fan

Fan

SF-C

Fan

 

4

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.

5

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.

6

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.

7

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.

8

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.

9

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.

10

24 VAC COM

24 VAC COM

 

11

24 VAC

24 VAC

12

24 V COM power transformer

13

24 V HOT power transformer

14

From last device

15

To next device

16

NS zone sensor.

 

This sensor is required if you do not control from the RA-T sensor.

17

Zone sensor

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

 

Optional: The connector is located on the back of the sensor.

18

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.

19

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.

20

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.

21

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.

22

Supply air temperature

SA-T

TE-6311M-1

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

23

Service alarm

SERVICE-A

n/a

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

24

Occupancy sensor

OCC-S

OLS-2100-1

RIBU1C

Optional: Used to reset setpoints when the room is unoccupied.

25

Low temperature alarm

LT-A

A70HA-1C

TE-6001-8

Required: Use this input when you have water coils and an economizer.

26

Fan status

SF-S

CSDECM-C35200

Optional: Use this input if you want a supply fan alarm.

Figure 2. Wiring diagram to add LC-IOM3711-0 to LC-VAC1000-0

Table 2. Wiring diagram to add LC-IOM3711-0 to LC-VAC1000-0

No.

Description

Object name

Johnson Controls part number

Required or optional

1

Continuation of unit terminal strip: 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.

2

Continuation of unit terminal strip: 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.

3

Continuation of unit terminal strip: 24 VAC

     

4

Hot gas bypass solenoid

HGBYV-C

   

5

Humidifier output

HUM-O

HL-67N5-8N00P

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 enable

HUM-C

RIBU1C

Optional: Use when you want to cycle the humidifier.

7

Cooling output

CLG-O

Actuator (part requires sizing)

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

8

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.

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

16

Purge command

PURGE-S

n/a

Optional: Dry contact input. Use this input when you want to purge the facility of smoke with the unit’s dampers.

17

Filter status

FILTER-S

P32AC-2C

FTG18A-600R

Optional

18

Return air CO2

RA-CO2

CD-W00-00-2

CD-P1000-00-00

Optional

19

Zone humidity

ZN-H

HE-69130NS-0

Optional