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Chapter 3: Installation
AirLink 7032 Gas Monitor Operator’s Manual
Relay Wiring
The AirLink 7032 has four relays. Each of the four relays may be setup as Normally Open (NO)
or Normally Closed (NC). See page 47 for more explanation about relay actuation.
NOTE:
If installed, the strobe is factory wired to the Relay 1 terminals and the horn is factory
wired to the Relay 2 terminals.
1. Open the enclosure box to expose the Front Panel.
2. Unscrew the two thumb-screws on the Front Panel.
3. Open the Front Panel so that the Terminal Board is exposed.
4. Locate the Relay Terminal Blocks on the Terminal Board.
5. Connect the alarm device’s “+ (H)” terminal to the
NO
or
NC
terminal on the relay terminal
block.
NOTE:
It is recommended that the relay connections are wired as normally-open
(NO). However, normally-closed (NC) wiring configurations provide an
inherent fail-safe and may be preferred.
6. Connect the alarm device’s “- (N)” terminal to an external power source’s “- (N)” terminal.
7. Connect the external power source’s “+ (H)” terminal to the COM terminal on the relay
terminal block.
