Orion System Water Source Heat Pump Module - Manual (Page 10)

Water Source Heat Pump Module
Technical Guide 10
Start-Up & 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 WSHP Controller is
confi gured properly for your application. Refer to the VCM-X Controller
Technical Guide for more information. A handheld Modular Service Tool,
Modular System Manager, or System Manager Touch Screen connected
to the VCM-X WSHP Controller will allow you to confi gure your ap-
plication. Refer to the VCM-X Operator’s Interfaces Technical Guide or
System Manager TS Technical Guide for more information.
Table 1: Unit Confi gurations
UNIT CONFIGURATIONS
PERMUTATION
CIRCUIT A CIRCUIT B
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 2 Compressors
2 Digital N/A Fixed N/A
2 Compressors
Digital Compressor
3 Digital N/A Digital N/A
2 Compressors
Dual Digital
4 Fixed Fixed Fixed Fixed 4 Compressors
5 Digital Fixed Fixed Fixed
4 Compressors
Digital Compressor
6 Digital Fixed Digital Fixed
4 Compressors
Dual Digital
The Compressors will stage in the following order:
Permutations 1, 2 & 3: Circuit A, 1 st Compressor (A1) -> Circuit B, 1 st Compressor (B1)
Permutations 4 & 5: Circuit A, 1 st Compressor (A1) -> Circuit A, 2 nd Compressor -> (A2)
Circuit B, 1 st Compressor (B1) -> Circuit B, 2 nd Compressor (B2)
Permutations 6: Circuit A, 1 st Compressor (A1) -> Circuit B, 1 st Compressor (B1) ->
Circuit A, 2 nd Compressor (A2) -> Circuit B, 2 nd Compressor (B2)
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.