Emerson E2 Outdoor RH Sensors, Duct-mounted Insertion RH Probe, Outdoor RH sensor P/N

4.Mount the back plate to the wall using the two open mounting holes on the top and bot- tom of the plate.

5.Replace the cover on top of the back plate by lining up the tabs, and snap the lid back into place.

Figure 3-25- Indoor RH Mounting Dimensions

3.5.8.2Outdoor RH Sensors

The outdoor RH sensor (P/N 203-5761)

The outdoor RH sensor (P/N 203-5761)should always be mounted on the north side of the building if in the Northern Hemisphere, or on the south side if in the South- ern Hemisphere. The sensor should be mounted under an overhang or otherwise out of direct sunlight (if possible).

Mount the RH sensor (P/N 203-5761)as follows:

1.Secure the rear side of the enclosure to the out- side wall using the two mounting brackets, as shown in Figure 3-26. The tube holding the sen- sor element should point straight down.

2.If you will be running the sensor cable through the wall behind the sensor, cut or drill a hole in the wall through the hole in the enclosure.

Figure 3-26- Outdoor RH Sensor - Exploded View

3.5.8.3Duct-mounted Insertion RH

Probe

Retail Solutions specs a duct-mounted relative humid- ity (RH) sensor (P/N 203-5771)with a 0-5VDC output for use in building control and anti-sweat control applications using Retail Solutions input boards.

1.Cut a small circular hole in the duct large enough for the sensor tube to fit through.

2.Bolt the sensor enclosure against the outside of the duct wall so that the sensor element fits through the hole and into the duct. The enclosure may be mounted horizontally, as shown in Fig- ure 3-27or vertically. The screws should be tight enough for the foam gasket around the bottom of the sensor to form an airtight seal between the hole in the duct wall and the outside air.

Figure 3-27- Duct-mounted RH Sensor - Exploded View

3-10 • E2 RX/BX/CX I&O Manual 026-1610 Rev 13 14-SEP-2011