028-0506-02_II-VZ8250_EN www.viconics.com
January 2020
8
VZ8250
[
Installation Guide
]
4. TYPICAL APPLICATION: PRESSURE INDEPENDENT (PARALLEL FAN)
0-10V Analog C Parallel Fan
BO1
BO2
BO3
BO4
- F
an On
R
C (24V
A
C)
C (Common)
RH
BO8
- Aux Hea
t
UO9
- Close Damp
.
UO10
- Open V
alv
e
UO11
- 0-10V Output
UO12
- 0-10V Output
7 8 9 10 11 12
Spacer
CHANGEOVER
SENSOR
Com.
Sens.
SUPPLY AIR
TEMP. SENSOR
OPTIONAL
Com.
Sens.
FLOW SENSOR
Com.
RC
Output
13 14 15 16 17 18
19 20 21 22 23 24
B
A
Cnet
+
B
A
Cnet
-
B
A
Cnet REF
UI16
UI17
Common
UI19
- CS
UI20
- RS
C (Common)
UI22
- SS
UI23
UI24
- 0-10V Input
0-10V ANALOG
HEATING COIL
BASEBOARD 24V~
24V
Com.
Com.
Input
RC
Input
RC
0-10V ANALOG ACTUATOR
DAMPER
Com.
COMMON
24 VAC
FAN HI
FAN MED
FAN LO
Low-voltage
TERMINAL BLOCK
PARALLEL
FAN
Com.
Enable
1 2 3 4 5 6
Configuration Parameter Name
Configuration Settings
VAV box type
PI
Actuator type
0-10V DA
Fan type
Parallel binary
Reheat configuration
Duct + baseboard
Duct heater
0-10V DA
Baseboard configuration
PWM VAC
Refer to the VZ8250
Application Guide
for more information on the “Sequence of Operations and Wiring”.
