028-0506-02_II-VZ8250_EN www.viconics.com
January 2020
10
VZ8250
[
Installation Guide
]
6. TERMINAL IDENTIFICATION
6.1
FAN TYPE
Supported fan types:
•
Parallel On/Off
•
Serial On/Off
•
Parallel ECM
•
Serial ECM
Supported output types:
•
On/Off: Binary Output
•
ECM: Analog Output
Binary (24V~)
Terminal
Name
Connection
4
BO4
24V~ Enable
6, 18 or 21
C / 24 V~ Common
24 V~ Common
ECM (0-10V DC)*
Terminal
Name
Connection
6, 18 or 21
C / 24 V~ Common
24 V~ Common
10
UO10
0-10V Output
*
Warning!
Floating duct reheat is not possible when Fan Type is ECM.
6.2
AIR FLOW SENSOR (PI ONLY)
Supported air flow sensor parameters:
•
Output voltage = 0-10V (DC)
•
Pressure range = 0.5 or 5 inch water column
•
Flow a 1 inch water column:
Minimum = 10
Maximum = 10000
NOTE
: Refer to the VAV box manufacturer flow chart for the recommended settings.
Recommended air flow sensor: Schneider Electric (Veris) PX3PXX01 or equivalent.
PI-Only Air Flow Sensor
Terminal
Name
Connection
5
RC / 24 V~ Hot
24 V~ Hot
6, 18 or 21
C / 24 V~ Common
24 V~ Common
24
UI24
0-10V Input