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 CO
2
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
sensor must have the fixed address 199.
• If you install CO
2
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.
19
Verasys ZEC510 VAV Controllers Installation Guide
