Orion System Dual Digital Module - Manual (Page 10)

Dual Digital Module
Technical Guide 10
Start Up and Commissioning
General
In order to have a trouble free start-up, it is important to follow a few
simple procedures. Before applying power for the fi rst time, it is very
important to run through a few simple checks.
One of the most important checks to make before powering up the system
for the fi rst time is to make sure that the VCM-X Modular or VCM-X
Modular E-BUS Controller is confi gured properly for your application.
Refer to the VCM-X Controller Technical Guide or VCM-X Modular
E-BUS Controller Technical Guide for more information.
A handheld Modular Service Tool, Modular System Manager, or System
Manager Touch Screen connected to the VCM-X Modular or VCM-X
Modular E-BUS Controller will allow you to confi gure your application.
Refer to the VCM-X Operator’s Interfaces Technical Guide or System
Manager TS Technical Guide for more information.
Check all wiring leads at the terminal block for tightness. Be sure that
wire strands do not stick out and touch adjacent terminals. Confi rm
that all sensors required for your system are mounted in the appropriate
location and wired into the correct terminals.
WARNING: Observe polarity! All boards must be wired
GND-to-GND and 24 VAC-to-VAC. Failure to
observe polarity could result in damage to the
boards.
Table 1: Unit Confi gurations Chart
UNIT CONFIGURATIONS
PERMUTATION
CIRCUIT A CIRCUIT B
HARDWARE
VCM-X WSHP
CONFIGURATION
Comp A1 Comp A2 Comp B1 Comp B2
Relay 1 Relay 2 Relay 3 Relay 4
1 Fixed N/A Fixed N/A
Use VCM-X
Modular Series
Controller Only 2 Compressors
2 Digital N/A Fixed N/A
Use VCM-X
Modular Series
Controller Only
2 Compressors
Digital Compressor
3 Digital N/A Digital N/A
Use VCM-X
Modular Series
Controller and
Dual Digital
Module
2 Compressors
Dual Digital
4 Fixed Fixed Fixed Fixed
Use VCM-X
Modular Series
Controller Only 4 Compressors
5 Digital Fixed Fixed Fixed
Use VCM-X
Modular Series
Controller Only
4 Compressors
Digital Compressor
6 Digital Fixed Digital Fixed
Use VCM-X
Modular Series
Controller and
Dual Digital
Module
4 Compressors
Dual Digital