2-58 ACH550 E-Clipse Bypass User’s Manual
Application macros
Typical wiring diagrams showing a conventional starter wiring and use of the
E-Clipse Bypass
Typical system wiring with use of E-Clipse Bypass:
Typical starter wiring for a smoke control listed system today:
Auto Fire
Shut Down
Normal
Auto Start / Stop
Auto
Pressure
Return Duct
Smoke
Damper
End Sw i tch
Supply Duct
Smoke
Manual
Pressure
High
Pressure
Freezestat
10
1
2
3
4
5
9
8
7
6
Normal Smoke
Control
(DI1) Start/Stop
[Terminal X2:5]
10
(DI2) Run Enable
[Terminal X2:6]
11
(DI3) High Priority
Safeties
[Terminal X2:7]
11
(DI4) Emergency
Shutdown
[Terminal X2:8]
11
(DI5) Low Priority Safeties
[Terminal X2:9]
10
(DI6) Smoke Control
[Terminal X2:10]
01
Normal Operation:
• Close Start/Stop (X2:5)
• Fan starts, assuming that
X2: 6, 7, 8, and 9 are all
closed
Emergency Shutdown:
• Open auto fire shutdown,
unit stops
Smoke Control Mode:
• Close contact on X2:10
• Fan starts regardless of
position of internal HOA
switch and inputs
X2:5 and X2:9
• Inputs X2:6, 7 and 8
followed
• Internal overloads
followed
X2 E-Clipse Bypass Controller Input
Notes:
1. Pressure cutouts, duct smoke detectors
and auto shutdown are
2-pole.
2. Manual control also activates “auto
control” relays.
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