2-20 ACH550 E-Clipse Bypass User’s Manual
Installation
Install the control wiring (supplement to ACH550-UH User’s Manual)
Connect control wiring to terminal block X1 on the ACH550 control board and to
terminal block X2 on the E-Clipse Bypass control board. For more information on
these connections, refer to the following:
• X1 terminal block location and terminal data are defined in the ACH550-UH
User’s Manual on page 1-316.
• X2 terminal block location is illustrated in the figures starting with Connection
diagrams – Vertical E-Clipse Bypass on page 2-12.
• X2 terminal data are provided in Basic control connections for E-Clipse HVAC
Default on page 2-21.
• Basic connections are described in the following paragraphs.
• Alternate configurations using the E-Clipse Bypass macro are described in
Application macros on page 2-53.
• On Terminal Block X1 inside the ACH550, analog inputs and outputs and
additional digital input and relay output connections (AI1, AI2, AO1, AO2,
DI1…DI6 and RO1…RO6) are available for use. Refer to the ACH550-UH User’s
Manual for information about control connections on Terminal Block X1 on page
1-316.
Note: The E-Clipse Bypass control circuitry uses serial communications connections
(X1:28…X1:32) inside the ACH550. These connections are not available for any
other purpose and must not be reconfigured.
Basic connections
The figure on page 2-21 shows the basic control
connections for use with the E-Clipse Bypass HVAC
Default macro. These connections are described in
the following paragraphs.
In typical installations, only analog input wires
connect to the ACH550 terminal block, with other
control connections made on the E-Clipse Bypass
control board.
Use wire ties to permanently affix control/
communications wiring to the hooked wire race tie
points provided, maintaining a minimum 6 mm (1/4")
spacing from power wiring.
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