9 |
028-0325-02_LIT-VZ7656F_W-E01_EN
October 2019
T
ERMINAL
,
I
DENTIFICATION AND
F
UNCTION
Wiring
Terminal Use
Terminal
Identification
Description
1 – Cool 2
Y2
Output for cooling / compressor stage
number 2.
2 – Cool 1
Y1
Output for cooling / compressor stage
number 1.
3 - Fan
G
Output for the fan.
4 - 24 V ~ Hot
RC
Power supply of controller, hot side
(Delivered from the RTU).
5 - 0 V ~ Com
C
Power supply of controller, common side.
Also used as reference for the analog BPD
output when used (Delivered from the
RTU).
7 – Not Used
Not Used
Not Used
8- Auxiliary Output
AU
Auxiliary output used to disable economizer
damper minimum position or control lighting
during unoccupied periods.
9 – By-pass damper
BPD
Local analog 0 - 10 VDC by-pass damper /
VFD output.
10 – Analog Heat Output
AO
0-10 VDC analog heating output.
11 – Static pressure
SP
Local analog 0 – 5 VDC static pressure
input.
12 - DI1
DI
Configurable extra digital input. See
parameter section for more information.
13 - RS
RS
Return air temperature sensor input. If
sensor fails, controller will use the on-board
thermistor sensor to control if the
communication is lost.
14 - Scom
Scom
Reference input for DI 1, RS, OS & DS.
15 - OS
OS
Outside air temperature sensor input.
16 - DS
DS
Discharge air temperature sensor input.