Verasys ZEC510 User manual

(barcode for factory use only)
LC-ZEC510-3
Building Technologies & Solutions
www.johnsoncontrols.com
2021-04-08
*241014301485B*
Verasys ZEC510 VAV Controllers
Installation Guide
Part No. 24-10143-01485
Rev. B

2 Verasys ZEC510 VAV Controllers Installation Guide

Contents
ContentsApplications..................................................................................................................................................... 5
Installation...................................................................................................................................................... 5
Parts included...................................................................................................................................... 5
Materials and special tools needed................................................................................................... 5
Mounting......................................................................................................................................................... 6
Safety guidelines................................................................................................................................. 6
Mounting the ZEC510.......................................................................................................................... 6
Wiring.............................................................................................................................................................. 9
Input and output terminals.............................................................................................................. 10
Sensor bus terminal block...................................................................................................................... 10
Zone bus terminal block......................................................................................................................... 10
Modular ports........................................................................................................................................... 11
Supply power terminal block.................................................................................................................. 12
Wiring diagrams................................................................................................................................ 13
ZEC510-1 controller - VAV with staged reheat control wiring example............................................. 13
ZEC510-2 controller - VAV with incremental reheat control wiring example.................................... 15
ZEC510-3 controller - Multizone unit VAV with proportional reheat control wiring
example...................................................................................................................................................... 17
ZEC510 terminal functions, ratings, requirements, and wiring guidelines................................ 19
Input and output wiring guidelines....................................................................................................... 19
System and zone bus supply power wiring guidelines....................................................................... 19
Sequence of operation................................................................................................................................ 24
Occupied mode.................................................................................................................................. 24
Unoccupied mode............................................................................................................................. 24
Unit enable................................................................................................................................................ 24
Fan control (optional).............................................................................................................................. 24
Occupancy lighting switch (optional).................................................................................................... 24
Demand control ventilation (optional).................................................................................................. 25
Configuring the NS sensors........................................................................................................................ 25
Setup and adjustments............................................................................................................................... 26
Setting the ZEC510 device address................................................................................................. 26
Accessories.................................................................................................................................................... 27
Troubleshooting........................................................................................................................................... 28
Status LEDs......................................................................................................................................... 28
Communication bus problems........................................................................................................ 29
Input and output wiring problems........................................................................................................ 29
Invalid address......................................................................................................................................... 29
Duplicate addresses................................................................................................................................ 29
Correcting physical communication bus problems............................................................................. 30
Repair information....................................................................................................................................... 31
Technical specifications............................................................................................................................... 31
Verasys ZEC510 VAV Controllers Installation Guide 3

North American emissions compliance..................................................................................................... 31
United States...................................................................................................................................... 31
Canada................................................................................................................................................ 32
Product warranty......................................................................................................................................... 32
Software terms............................................................................................................................................. 32
Single point of contact................................................................................................................................. 32
Contact information..................................................................................................................................... 33
Verasys ZEC510 VAV Controllers Installation Guide4

Applications
The ZEC510 VAV controller is a component of the Verasys SMART Equipment family. The ZEC510
variable air volume (VAV) controller runs a pre-engineered HVAC zoning sequence and provides the
inputs and outputs you require for VAV applications.
The ZEC510 controller has an optional occupancy feature that makes it possible for the controller
to switch from occupied mode to standby mode based on zone activity. Standby mode maximizes
energy savings by using setpoints that are higher and lower than occupied mode setpoints.
The ZEC510 controller uses plug and play technology to detect which network sensor types are
connected. See Accessories for additional sensor information.
Use the Verasys Smart Building Hub (SBH) to configure the ZEC510 controller. Use the SBH or the
VAV Balancing Thermostat to commission the controller.
Important: Use this ZEC510 VAV controller only as an operating control. Where failure or
malfunction of the ZEC510 controller could lead to personal injury or property damage to the
controlled equipment or other property, additional precautions must be designed into the
control system. Incorporate and maintain other devices, such as supervisory or alarm systems
or safety or limit controls, intended to warn of or protect against failure or malfunction of the
ZEC510 VAV controller.
Important: Utiliser ce ZEC510 VAV controller uniquement en tant que dispositif de contrôle
de fonctionnement. Lorsqu'une défaillance ou un dysfonctionnement du controller risque de
provoquer des blessures ou d'endommager l'équipement contrôlé ou un autre équipement, la
conception du système de contrôle doit intégrer des dispositifs de protection supplémentaires.
Veiller dans ce cas à intégrer de façon permanente d'autres dispositifs, tels que des systèmes
de supervision ou d'alarme, ou des dispositifs de sécurité ou de limitation, ayant une fonction
d'avertissement ou de protection en cas de défaillance ou de dysfonctionnement du ZEC510
VAV controller.
Installation
Follow these guidelines when you install a ZEC510 controller:
• Transport the ZEC510 controller in the original container to minimize vibration and shock
damage.
• Do not drop the ZEC510 controller or subject it to physical shock.
Parts included
• One ZEC510 VAV Controller with removable system and zone buses, and power terminal blocks
• One self-drilling No. 10 mm x 25 mm (1 in.) screw
Materials and special tools needed
• 6 mm (1/4 in.) female spade terminals for input and output wiring and crimping tool or spade
mounted terminal blocks
• A small straight-blade screwdriver for securing wires in the terminal blocks
• An 8 mm (5/16 in.) wrench or a 10 mm (3/8 in.) 12-point socket to tighten the square coupler
bolt
• Shims or washers to mount the ZEC510 if necessary
• A power screwdriver
5Verasys ZEC510 VAV Controllers Installation Guide

• A 100 mm (4 in.) extension socket or a punch
• A drill
• 3.5 mm (9/64 in.) drill bits
• A pliers to open and close the damper
• 3.97 mm (5/32 in.) ID poly tubing
Mounting
Safety guidelines
Follow these safety guidelines before mounting the controller:
Important: When the air supply to the VAV box is below 10°C (50°F), make sure that
any condensation on the VAV box, particularly on the damper shaft, does not enter the
ZEC510 electronics. Mount the ZEC510 vertically above the damper shaft so that any shaft
condensation falls away from the ZEC510. Additional measures may be required in some
installations.
• Ensure that the mounting surface can support the ZEC510 and any user-supplied enclosure.
• Mount the ZEC510 on a hard, even surface.
• Use shims or washers to mount the ZEC510 securely and evenly on the mounting surface if
necessary.
• Mount the ZEC510 in an area free of corrosive vapors that matches the ambient conditions
specified in the Technical specifications section.
• Provide at least 50 mm (2 in.) on the top, bottom, sides, and front of the controller for cable
and wire connections and adequate ventilation through the controller.
• Do not mount the ZEC510 in areas where electromagnetic emissions from other devices or
wiring can interfere with controller communication.
• Avoid mounting the ZEC510 on surfaces with excessive vibration.
• Wear the appropriate personal protective equipment (PPE). For example, a hard hat, safety
glasses, steel toe boots, and gloves.
Follow these additional guidelines when mounting the ZEC510 in a panel or enclosure:
• Do not install the ZEC510 in an airtight enclosure.
• Mount the ZEC510 so that the enclosure walls do not obstruct cover removal or ventilation
through the controller.
• Mount the ZEC510 so that the power transformer and other devices do not radiate excessive
heat to the controller.
Mounting the ZEC510
To mount the controller, complete the following steps:
1. Disconnect power from the controller transformer, the VAV box fan, and heater circuits if
applicable.
2. Set all the switches on the field controller to their known settings. See Setup and adjustments.
3. Set the MS/TP address. See Setup and adjustments.
Verasys ZEC510 VAV Controllers Installation Guide6

4. Ensure that the end of line (EOL) switch is set to the off position.
5. Use the zone bus address range 4-127 for Verasys zone bus controllers.
6. Place the ZEC510 on the actuator shaft so that the wiring connections are easily accessible.
7. Ensure that the ZEC510 base is parallel to the VAV box, perpendicular to the damper shaft. If
necessary, use a spacer to offset tipping of the ZEC510 caused by the shaft bushings.
Note: Use the alignment marks to center the captive spacer to ensure sufficient
movement in either direction.
Figure 1: Captive spacer alignment marks
8. Secure the self-drilling no.10 screw through the captive spacer with a power screwdriver
and 100 mm (4 in.) extension socket. Alternatively, use a punch to mark the position of the
shoulder washer.
9. Drill a hole into the VAV box using a 5/16 in. drill bit.
10. Insert the mounting screw and tighten it against the spacer.
Important: Do not over-tighten the screw. Over-tightening can cause the threads to strip.
If you mount the ZEC to the VAV box, make sure that the screws do not interfere with
damper blade movement.
11. Locate the damper position using the marking on the end of the damper shaft.
12. Note the direction, clockwise (CW) or counterclockwise (CCW), required to close the damper.
The actuator configuration depends on the amount of rotation necessary for the damper to go
from the full-open to the full-closed position. Decide between the following options:
- For 90° rotation, install the damper in the full-closed position.
- For 45° or 60° rotation, install the damper in the full-open position.
13. Push down and hold the manual override button and turn the actuator coupler until it contacts
the mechanical end-stop at either the full-closed or full-open position.
7Verasys ZEC510 VAV Controllers Installation Guide

Figure 2: Manual override and actuator coupler
Table 1: Manual override and actuator coupler
1 Manual override button
2 Actuator coupler
14. If the damper for a 45° or 60° box closes CCW or CW, rotate the coupler to the CW mechanical
limit. This action sets the open end-stop; the closed end-stop is set by the closed damper.
For 45° and 60° boxes, you must provide hard stops at both full-closed and full-open damper
positions. If you install the ZEC510 at the full-open position, it provides the open stop for 45°
and 60° boxes. The closed damper seal provides the full-closed stop.
15. Tighten the square coupler bolt to the shaft using an 8 mm (5/16 in.) wrench or 10 mm (3/8 in.)
12-point socket. Tighten to 10.5 N·m to 11.5 N·m (95 lb·in to 105 lb·in).
16. Put a loop in the poly tubing to trap condensation when you attach the poly tubing to
the ZEC510 pressure transducer ports. Loop the poly tubing before you make the final
connections.
17. Push the manual override button, and turn the actuator coupling manually to ensure that the
actuator can rotate from the full-closed to the full-open positions without binding.
18. Rotate the damper to the full-open position.
Verasys ZEC510 VAV Controllers Installation Guide8

Wiring
WARNING
Risk of Electric Shock
Disconnect power from the controller before making any adjustments. Do not touch any part of the
printed circuit board while power is applied. Failure to follow these precautions can result in personal
injury or death.
AVERTISSEMENT
Risque de décharge électrique
Déconnecter l'alimentation du controller avant toute opération de réglage. Veiller à ne toucher aucune
partie du circuit imprimé lorsque celui-ci est sous tension. Le non-respect de ces précautions peut
provoquer des blessures graves, voire mortelles.
Important:
• Do not exceed the controller electrical ratings. Exceeding controller electrical ratings can
result in permanent damage to the controller and void any warranty.
• Do not connect supply power to the controller before finishing wiring and checking all
wiring connections. Short circuits or improperly connected wires can result in damage to
the controller and void any warranty.
• Use copper conductors only. Make all wiring in accordance with local, national, and
regional regulations.
To wire the ZEC510, complete the following steps:
1. Use the appropriate figures according to your particular configuration:
- Figure 9 and Figure 10 if you are using staged outputs for the heating control
- Figure 11 and Figure 12 if you are using incremental outputs for the heating control
- Figure 14 and Figure 15 if you are using proportional outputs for the heating control
2. Wire the network temperature sensor and CO2 sensor to the sensor bus on the ZEC510. See
Sensor bus terminal block.
Note: The CO2 sensors require a 24 VAC power supply in addition to wiring the +, -, COM,
and SA PWR terminals. For more information, refer to the NS Series CO2 Network Sensors
Installation Instructions (Part No. 24-10424-6).
3. Wire the zone bus in a daisy-chain configuration. See Zone bus terminal block.
4. Set the device address DIP switch to the appropriate address. See Setting the ZEC510 device
address.
5. If the ZEC510 is at the end or beginning of the line, set the EOL switch to the ON position.
6. Connect the ZEC510 to 24 VAC, Class 2 power.
9Verasys ZEC510 VAV Controllers Installation Guide

Input and output terminals
Sensor bus terminal block
The sensor bus terminal block is a brown, removable, 4-terminal plug that fits only into the brown,
board-mounted sensor bus jack. Wire the removable sensor bus terminal block plugs on the
ZEC510 and other field devices in a daisy-chain configuration using 4-wire twisted, shielded cable as
shown in Figure 3 and Figure 4.
Figure 3: Sensor bus terminal block wiring
Figure 4: Sensor bus daisy chaining configuration
Table 2: Sensor bus daisy chaining configuration
1 Terminating device on the sensor bus
2 Sensor bus terminal block plug on the terminating device
3 Daisy-chained device on a sensor bus segment
4 Sensor bus terminal block plug on the daisy-chained device
5 Cable shield connection
6Connects to the next device on the sensor bus. Connects to the NS-xxxx sensors. See the Accessories
section for a list of the NS-xxxx sensors.
Zone bus terminal block
The zone bus terminal block is a gray, removable, 4-terminal plug that fits only into the black,
board-mounted, zone bus jack. Wire the removable zone bus terminal block plugs on the ZEC510
and other zone bus controllers in a daisy-chain configuration using 3-wire twisted, shielded cable,
as shown in Figure 5 and Figure 6.
Verasys ZEC510 VAV Controllers Installation Guide10

Figure 5: Zone bus terminal block wiring
Figure 6: Zone bus daisy chaining configuration
Table 3: Zone bus daisy chaining configuration
1 Terminating device on the zone bus
2 Zone bus terminal block plug on the terminating device
3 Daisy-chained device on a zone bus segment
4 Zone bus terminal block plug on the daisy-chained device
5 Cable shield connection
6Connects to the next device on the zone bus. Connects to all ZECs and the zoning roof top unit (RTU) of
the VZC100.
Modular ports
The modular sensor and zone bus ports on the front of the ZEC510 are RJ12, six-position, modular
jacks. The modular sensor bus ports provide a connection for the VAV Balancing Tool. The zone bus
port is not used in ZEC510 installations. The following figure shows the pin number assignments on
the modular port.
11Verasys ZEC510 VAV Controllers Installation Guide

Figure 7: Pin number assignments
Table 4: Pin number assignments
1 Power 15 VDC
2 Bus and power common
3 Power 15 VDC
4 Bus and power common
5 Sensor or zone bus -
6 Sensor or zone bus +
Supply power terminal block
The 24 VAC supply power terminal block is a gray, removable, 2-terminal plug that fits into a board-
mounted jack on the upper left of the ZEC controller. Wire the 24 VAC supply power wires from the
transformer to the HOT and COM terminals on the terminal plug as shown in the following figure.
Figure 8: Supply power terminal block wiring
Table 5: Supply power terminal block wiring
1 Supply power terminal block jack
2 Supply power terminal block plug
3 Wires from Johnson Controls 90 VAC to 24 VAC, Class 2, power transformer
Verasys ZEC510 VAV Controllers Installation Guide12

Important: Do not share the 24 VAC power with other network devices. Sharing power with
other network devices can cause noise, interference, and ground loop problems. You may
damage the controller by sharing power with other devices.
Wiring diagrams
ZEC510-1 controller - VAV with staged reheat control wiring example
Figure 9: ZEC510-1 - flow diagrams
Figure 10: ZEC510-1 - controller wiring diagram
13Verasys ZEC510 VAV Controllers Installation Guide

Table 6: ZEC510-1 - controller wiring diagram
Number Description
Name on the
Verasys user
interface
Terminal
label Object name Signal type
1 24 V HOT power transformer
2 24 V COM power transformer
3 Electric heat safeties
n/a
4 Optional. Heating stage command 1 HEATING STAGE
COMMAND 1 OUT1 HTG1-C 24 VAC on/off, internally sourced
5 Optional. Heating stage command 2 HEATING STAGE
COMMAND 2 OUT2 HTG2-C 24 VAC on/off, internally sourced
6 Optional. Supply fan command SUPPLY FAN
COMMAND OUT3 SF-C 24 VAC on/off, internally sourced
7 Optional. Supplemental heating stage
command
SUPPLEMENTAL
HEATING STAGE
COMMAND
OUT4 SUPHTG1-C 24 VAC on/off,
externally sourced
8 Optional. Heating stage command 3 HEATING STAGE
COMMAND 3 OUT5 HTG3-C 24 VAC on/off, externally sourced
9 Pressure ports. No polarity
10 Manual override n/a
11 Optional. Supply air temperature
sensor TE-631GV-2.
SUPPLY AIR
TEMPERATURE IN3 SA-T Nickel 1K RTD
12 Optional. Relay: RIBU1C
13 Occupancy sensor OLS-2100-1. To red
wire occupancy switch
14 Occupancy sensor OLS-2100-1. To
neutral occupancy switch
OCCUPANCY
STATUS IN2 OCC-S
Dry Contact, Normally
Open
Normally Closed is
configurable
through the interface
15 Optional. Discharge air temperature
sensor TE-631GV-2.
DISCHARGE AIR
TEMPERATURE IN1 DA-T Nickel 1K RTD
16 To next device
17 From last device
18 See riser schedule to determine the EOL
device. You must set the EOL switch to
the ON position on the EOL device.
n/a
19 Zone temperature sensor
NSB8BTN240-0. The connector is
located on the back of the sensor.
ZONE
TEMPERATURE SENSOR BUS ZN-T
20 Optional. Zone CO2 sensor NS-
BCN7004-0. The connector is located on
the back of the sensor.
ZONE AIR QUALITY
or ZONE CO2 SENSOR BUS ZN-CO2
Sensor Actuator
(SA) bus
Note:
• Heating or fan contactors are in the VAV box. The VAV controller binary outputs switch the
common. OUT1, OUT2, and OUT3 are 24 V HOT continuously.
• You can average up to five NS sensors. Connect the NS sensors in a daisy-chain
configuration using the addresses in the Configuring the NS sensors section. The fifth
sensor must have the fixed address 199.
•If you install CO2 Net sensors, in addition to the 24 VAC power for the controller, you must
also supply 24 VAC power to the HOT and COM terminals.
Verasys ZEC510 VAV Controllers Installation Guide14

ZEC510-2 controller - VAV with incremental reheat control wiring example
Figure 11: ZEC510-2 - flow diagrams
Figure 12: ZEC510-2 - wiring diagram
15Verasys ZEC510 VAV Controllers Installation Guide

Table 7: ZEC510-2 wiring diagram
Number Description
Name on the
Verasys user
interface
Terminal
label Object name Signal type
1 24 V HOT power transformer
2 24 V COM power transformer n/a
3 Optional. Heating percent command
Terminations for 2-way or 3-way coil - A
valve configurations. CCW to open
HEATING STAGE
OUTPUT OUT1 HTG-O 24 VAC Position Adjust Output (Floating)
4 Optional. Heating percent command
Terminations for 3-way coil - B valve
configuration. CCW to close
HEATING STAGE
OUTPUT OUT2 HTG-O 24 VAC Position Adjust Output (Floating)
5 Optional. Supply fan command SUPPLY FAN
COMMAND OUT3 SF-C 24 VAC on/off, internally sourced
6 Optional. Supplemental heating
percent command. CCW to open
SUPPLEMENTAL
HEATING OUTPUT OUT4, OUT5 SUPHTG-O 24 VAC Position Adjust Output (Floating)
7 Pressure ports. No polarity
8 Manual override n/a
9 Optional. Supply air temperature
sensor TE-631GV-2.
SUPPLY AIR
TEMPERATURE IN3 SA-T Nickel 1K RTD
10 Optional. Relay: RIBU1C
11 Occupancy sensor OLS-2100-1. To red
wire occupancy switch
12 Occupancy sensor OLS-2100-1. To
neutral occupancy switch
OCCUPANCY
STATUS IN2 OCC-S
Dry Contact, Normally
Open
Normally Closed is
configurable through
the interface
13 Optional. Discharge air temperature
sensor TE-631GV-2.
DISCHARGE AIR
TEMPERATURE IN1 DA-T Nickel 1K RTD
14 To next device
15 From last device
16 See riser schedule to determine the EOL
device. You must set the EOL switch to
the ON position on the EOL device.
n/a
17 Zone temperature sensor
NSB8BTN240-0. The connector is
located on the back of the sensor.
ZONE
TEMPERATURE SENSOR BUS ZN-T
18 Optional. Zone CO2 sensor NS-
BCN7004-0. The connector is located on
the back of the sensor.
ZONE AIR QUALITY
or ZONE CO2 SENSOR BUS ZN-CO2
SA bus
Note:
• Both heating valves use the 60-second incremental actuator factory default value. You can
adjust this in Verasys.
• You can average up to five NS sensors. Connect the NS sensors in a daisy-chain
configuration using the addresses in the Configuring the NS sensors section. The fifth
sensor must have the fixed address 199.
•If you install CO2 Net sensors, in addition to the 24 VAC power for the controller, you must
also supply 24 VAC power the HOT and COM terminals.
Piping details for valve configurations
See the valve schedule for the specific configuration.
Verasys ZEC510 VAV Controllers Installation Guide16

Figure 13: Piping details
ZEC510-3 controller - Multizone unit VAV with proportional reheat control
wiring example
Figure 14: ZEC510-3 - Flow diagrams
17Verasys ZEC510 VAV Controllers Installation Guide

Figure 15: ZEC510-3 - Wiring diagram
Table 8: ZEC510-3 - Wiring diagram
Number Description
Name on the
Verasys user
interface
Terminal
label Object name Signal type
1 24 V HOT power transformer
2 24 V COM power transformer n/a
3 Optional. Supplemental heating
percent command.
SUPPLEMENTAL
HEATING OUTPUT OUT1 SUPHTG-O 24 VAC Position Adjust Output (Floating)
4 Optional. Supply fan command SUPPLY FAN
COMMAND OUT3 SF-C 24 VAC on/off, internally sourced
5 Optional. Heating percent command HEATING STAGE
OUTPUT OUT4 HTG-O 0 VDC to 10 VDC
6 Optional. Heating stage command HEATING STAGE
COMMAND OUT5 HTG-C 24 VAC on/off, externally sourced
7 Pressure ports. No polarity
8 Manual override n/a
9 Optional. Supply air temperature
sensor TE-631GV-2.
SUPPLY AIR
TEMPERATURE IN3 SA-T Nickel 1K RTD
10 Optional. Relay: RIBU1C
11 Occupancy sensor OLS-2100-1. To red
wire occupancy switch
12 Occupancy sensor OLS-2100-1. To
neutral occupancy switch
OCCUPANCY
STATUS IN2 OCC-S
Dry Contact, Normally
Open
Normally Closed is
configurable through
the interface
13 Optional. Discharge air temperature
sensor TE-631GV-2.
DISCHARGE AIR
TEMPERATURE IN1 DA-T Nickel 1K RTD
Verasys ZEC510 VAV Controllers Installation Guide18

Table 8: ZEC510-3 - Wiring diagram
Number Description
Name on the
Verasys user
interface
Terminal
label Object name Signal type
14 To next device
15 From last device
16 See riser schedule to determine the EOL
device. You must set the EOL switch to
the ON position on the EOL device.
n/a
17 Zone temperature sensor
NSB8BTN240-0. The connector is
located on the back of the sensor.
ZONE
TEMPERATURE SENSOR BUS ZN-T
18 Optional. Zone CO2 sensor NS-
BCN7004-0. The connector is located on
the back of the sensor.
ZONE AIR QUALITY
or ZONE CO2 SENSOR BUS ZN-CO2
SA bus
Note:
• Figure 15 shows a connection to an electric SCR reheat coil that is proportionally
controlled. You can use the same heating percent command signal, which is 0 V to 10 V,
to control either an SCR reheat coil, or a proportional water valve, depending on what is
present.
• Supplemental valves use to the 60-second incremental actuator factory default value. You
can adjust this in Verasys.
• You can average up to five NS sensors. Connect the NS sensors in a daisy-chain
configuration using the addresses in the Configuring the NS sensors section. The fifth
sensor must have the fixed address 199.
•If you install CO2 Net sensors, in addition to the 24 VAC power for the controller, you must
also supply 24 VAC power the HOT and COM terminals.
ZEC510 terminal functions, ratings, requirements, and wiring
guidelines
Input and output wiring guidelines
Use the following guidelines to wire the ZEC510 inputs and outputs. See Table 9 for more
information about the functions, ratings, and requirements for the ZEC510 input and output
terminals.
• Run all low-voltage and high-voltage cables and wiring separately.
• Use twisted, insulated, and stranded copper wires for input and output cables.
• If the input or output cables are exposed to high electromagnetic or radio frequency noise, use
shielded cable.
System and zone bus supply power wiring guidelines
Use the following guidelines to wire the system and zone buses and the supply power. See Table
9 for more information about the functions, ratings, and requirements for the ZEC510 input and
output terminals.
• Run all low-voltage and high-voltage cables and wiring separately.
• Use twisted, insulated, and stranded copper wires for all system and zone bus cables.
19Verasys ZEC510 VAV Controllers Installation Guide

• Use shielded cables for all system and zone bus cables.
• Refer to the Verasys BACnet MS/TP Communications Technical Bulletin (LIT-12012362) for detailed
information about wire size and cable length requirements for the zone bus.
Table 9: ZEC510 wiring details
Terminal
Terminal
labels
Function and electrical ratings and
requirements Cable type and length
IN1 Provides an AI connection for discharge air (DA-T)
sensor.
0.6 mm (22 AWG) stranded, 2-
wire twisted cable for runs of
<30 m (<90 ft).
IN2 Provides a BI connection for occupancy sensor dry
contact (optional).
n/a
Analog Input (AI)
IN3 Provides an AI connection for supply air (SA-T)
sensor.
0.6 mm (22 AWG) stranded, 2-
wire twisted cable for runs of
<30 m (<90 ft).
OUT1 Provides a BO connection for box heating stage 1.
Internal power source: 24 VAC power, 24~ HOT.
See guideline C in Table 10
OCOM1 Provides a BO connection for box heating stage
1. Connects OCOM1 to 24~ COM when activated.
Internal power source: 30 VAC maximum voltage
to load, 0.5 A maximum output current, 40 mA
minimum load current.
See guideline C in Table 10
OUT2 Provides a BO connection for box heating stage 2.
Internally sources 24 VAC power, 24~ HOT.
See guideline C in Table 10
OCOM2 Provides a BO connection for box heating stage
2. Connects OCOM2 to 24~ COM when activated.
Internal power source: 30 VAC maximum voltage
to load, 0.5 A maximum output current, 40 mA
minimum load current.
See guideline C in Table 10
OUT3 Provides a BO connection for box fan.
Internal power source: 24 VAC power, 24~ HOT. See guideline C in Table 10
OCOM3 Provides a BO connection for box fan. Connects
OCOM3 to 24~ COM when activated.
Internal power source: 30 VAC maximum voltage
to load, 0.5 A maximum output current, 40 mA
minimum load current.
See guideline C in Table 10
OUT4 Provides a BO connection for supplemental heat.
Connects OUT4 to OCOM4 when activated.
Note: Requires external power source:
30 VAC maximum voltage to load, 0.5 A
maximum output current, 40 mA minimum
load current.
See guideline C in Table 10
OCOM4 Provides a BO connection for supplemental heat.
Note: This common is isolated from all other
commons, so jumper 24~ COM terminal if in
use.
See guideline C in Table 10
OUT5 Provides a BO connection for box heating stage 3.
Connects OUT5 to OCOM5 when activated.
Note: Requires external power source:
30 VAC maximum voltage to load, 0.5 A
maximum output current, 40 mA minimum
load current.
See guideline C in Table 10
Binary Output (BO)
for VAV with staged
reheat control
OCOM5 Provides a BO connection for box heating stage 3.
Note: This common is isolated from all other
commons, so jumper 24~ COM terminal if in
use.
See guideline C in Table 10
Verasys ZEC510 VAV Controllers Installation Guide20