Viconics VZ7656F Wireless Installation Guide - Manual (Page 6)

6 | VZ7656F1000W Installation Guide
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.