Minco
Tel: 763. 571.3121 • Fax: 763. 571.0927 • www.minco.com
3
Installation Do’s and Don’ts
Do:
•
Check the label and verify the model number of the unit.
•
Confirm the required power and signal wires are available at installation site.
•
Avoid electrical interference with other signals by using twisted pair wiring. Do not run signal leads
near or parallel to line voltage or other power leads.
•
Mount the unit on an interior wall located away from air drafts coming from forced air heating/cooling
vents, within the wall and/or the wiring conduit.
Don’t:
•
Do not touch or manipulate the sensors.
•
Do not expose the sensor to direct light during installation. This causes a false reading. Should this
occur, shade the sensor. It will self-adjust and yield an accurate reading in less than two minutes.
•
Do not expose the sensor or transmitter to static electricity. This device incorporates CMOS
components which are vulnerable to damage via static charges.
Mounting
Installation of the AH440 consists of mounting the transmitter and connecting it to power.
Duct/Wall/OSA Mounting: Models AH440D… AH440O… AH440W
1.
For the duct mount model AH440D only, drill ½” hole into sheet metal of duct. (Probe is 3/8” in
diameter.)
2.
Remove the rubber cap from the end of the probe.
3.
Using the fold-out tabs on bottom of housing, mount housing to sheet metal.
4.
Remove transmitter cover and connect power wires to the transmitter by 2 screw terminals located
near the edge of the circuit board (Figure 2). Power supply must not exceed 35 VDC.
5.
Re-install cover.