AFA4000/E VAV Airflow Controller / p.79
Figure 42: Light curtain vertical range
2. When the light curtain transmitter and receiver have been positioned, mark the sidewall
using the fixing holes in the transmitter and receiver as templates.
3. Drill the holes for the fixing screws. Use the 2 mm (0.08") drill bit provided and fix the
transmitter and receiver.
Figure 43: Transmitter / Receiver fixing holes
4. On a fume hood with an inner and outer sidewall the light curtain transmitter and receiver
cables run through the sidewall into the service void and up to the Sash Light Curtain Control
Box on top of the fume hood.
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