• 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 Guide
20
