Chapter 2: Installation
Complete Electrical Connections
Page 30
5. Connect the power cable from power plant to the controller box as shown below.
Electrical Connection to WPUs
Depending on which controller you are installing, either two or three wire harnesses are passed through the shelter
wall into the WPUs:
Control harness
Prime power
48VDC power - ONLY if ASLLC.2.48 is installed and the HVAC is equipped with DC EC supply fan
1. There are two options for bringing the control harness and the power cables into the WPU.
a. Make the connections from side panel.
Connect the prime
power
(L1&L2, 230Vac)
Righthand wiring holes
(when looking at installed
units from inside the shelter)
Lefthand wiring holes
(when looking at installed
units from inside the shelter)
3 wiring holes
Important. Ensure the
wiring harnesses are
dressed inside the
machine in such a way
that they will not interfere
with the movement of the
air damper.
Lefthand wiring holes
(when looking at installed
units from inside the shelter)
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