20 • Chapter 3: Installation
AirLink 7010 Gas Monitor Operator’s Manual
Relay Wiring
The AirLink 7010 has four relays. Each of the four relays may be setup as Normally Open (NO) or
Normally Closed (NC). See page 42 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 back of 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.
