CyberOne EC CW IOM Manual
11
Spot type water detector
Remove the protective cover and connect two control wires
to the terminals on the base (terminal
lugs are provided). Replace the cover
and place the water detector(s) on the
floor with the metal electrodes facing
down. When water is present, current
will flow between the electrodes. The
base is provided with a mounting hole
in the center which may be used to
secure the water detector in place.
NOTE
Do not place the spot type water detector on an
electrically conductive surface.
Cable type water detector
Lay the cable water detector flat across the sub-floor where
water could collect. When
water is present, current will
flow between the two wires. A
two conductor wire harness is
provided with a quick connect
fitting on the end. The harness mates to the fitting on the
water detector cable and connects it to the terminal block
inside the electric box.
2.6.5
Plenum Box Assembly
If an optional plenum box (plenum extension box or 1-, 2- or
3-way discharge plenum box) is purchased it is typically
shipped loose. To install a plenum box, first apply a strip of
sealing foam around the top flange of the A/C unit or, run a
bead of silicone sealant. Place the plenum assembly on top
of the unit as shown in Figure 5 on page 9. Attach the
plenum with the self-tapping screws provided. Holes are
pre-drilled in the unit and the plenum box. If mounting an air
distribution plenum box, the grilles may be removed for access
to the mounting holes.
2.7
Piping Connections
For downflow models, piping is routed through the bottom of
the cabinet. For upflow models, the piping is routed through
the top of the cabinet. If an optional plenum box is installed,
drill holes in the top or in the side of the box, as preferred, to
route the piping out.
2.7.1
Condensate Drain
2.7.1.1
Gravity Drain
A 7/8 inch O.D. copper (sweat type) line is provided to drain
the condensate pan. An S-trap is internally-installed in the
condensate drain piping. An installer should connect a 7/8
inch I.D. drain line to remove water from the cabinet. If an
optional humidifier is used, the drain line from the humidifier
is typically connected to the condensate drain line.
NOTE
During normal operation, the humidifier drain line
discharges (hot) water into the condensate drain
line.
The drain line must be located so it will not be exposed to
freezing temperatures. The diameter of the drain line should
be the full size of the connection.
NOTE
Pour some water into the condensate drain pan(s)
prior to start-up. This fills the trap and prevents air
from being drawn up the drain lines.
2.7.1.2
Condensate Pump
An optional condensate pump is normally factory installed.
The drain connection line is typically 1/2” I.D. vinyl tubing or
a 1/2” O.D. copper (sweat connection) may be used.
Figure 7.
Condensate Pump
INLET 7/8 OD
OUTLET 1/2 OD
