028-0506-02_II-VZ8250_EN www.viconics.com
January 2020
9
VZ8250
[
Installation Guide
]
5. TYPICAL APPLICATION: PRESSURE DEPENDENT (NO 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
- Open Damp
.
UO12
- Close V
alv
e
Floating Control
7 8 9 10 11 12
Spacer
CHANGEOVER
SENSOR
Com.
Sens.
SUPPLY AIR
TEMP. SENSOR
OPTIONAL
Com.
Sens.
COMMON
24 VAC
FAN HI
FAN MED
FAN LO
Low-voltage
TERMINAL BLOCK
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
1 2 3 4 5 6
BASEBOARD 24V~
24V
Com.
HEATING VALVE
Com.
Open
Close
Open
Close
FLOATING ACTUATOR
DAMPER
Com.
Configuration Parameter Name
Configuration Settings
VAV box type
PD
Actuator type
Floating
Fan type
None
Reheat configuration
Duct + baseboard
Duct heater
Floating
Baseboard configuration
Valve NC (Normally Closed)
Refer to the VZ8250
Application Guide
for more information on the “Sequence of Operations and Wiring”.