Bard W3RV2-R Literature Assembly page 29

INSTALLATION
IMPORTANT: For optimum temperature sensor
performance, the Bard ECU Series Controller must be
mounted on an interior wall and away from any heat
sources, sunlight, windows, air vents, air circulation
obstructions and/or any other cause of erratic or
false temperature sensing. Thermostat covers are
not recommended as they interfere with motion and
temperature sensing.
Mounting Controller
1. To complete rough-in wiring, it is suggested that
18 gauge solid conductor control wiring be used
in general applications, particularly for ease in
termination. When shielded wire is used, or in the
rare instance where wire gauge required for length
of run is greater than 18 gauge, stranded wire is
recommended. See Figure 1 for exact number of
conductors.
NOTE: Shielded wire must be used in applications
where transient signals may accumulate and affect
digital signal from control to unit.
Manual 2100-559A
Page 2 of 6
ECU Series Controller 8403-066
2. Turn the hex screws in the bottom and top of the
controller clockwise (inward) until they clear the
cover. Remove base plate from controller.
3. Route completed wiring through base plate.
4. With the embossed "UP" arrows of the base plate
pointing to the ceiling, fasten the base plate to the
desired wall location or vertical 2x4 wall handybox.
5. Make appropriate control wire connections (see
Table 1) to terminal blocks.
6. Replace controller over base plate, being careful
not to pinch/dislodge connections.
7. Turn hex screws in bottom/top of controller
counter-clockwise (outward) to secure cover.