INLET 7/8 OD
OUTLET 1/2 OD
CyberAiR DX Floor Mounted IOM Manual
NOTE
Pour some water into the condensate drain
pan prior to start-up. This fills the trap and
prevents air from being drawn up the drain
lines.
WARNING
Do not use chloride based water
conditioning additives in condensate
drain pans. This will cause corrosion to
occur on the coil fins
.
2.7.3.2 Condensate Pump
An optional condensate pump is normally factory
installed with a 1/2” OD copper drain. The drain is
stubbed outside of the A/C unit cabinet for the installer
to connect a drain line to direct water away from the
cabinet. The drain line may be 1/2” ID vinyl tubing or
a 1/2” OD copper to copper sweat connection may be
used.
See the installation drawing provided with your unit
for the location of the drain connection.
If an optional field installed condensate pump is
used, it must be positioned at the same level or
below the level of the A/C cabinet. The condensate
drain pan is equipped with a drain line inside the A/C
cabinet. A p-trap is provided on the end of the drain
line. Interconnect tubing must be field installed from
the end of the drain line to the inlet side of the
condensate pump (see Figure 14).
2.7.4
Humidifier
STULZ CyberAir systems utilize an electrode
steam humidifier. A water supply line for the
humidifier must be connected to the end of the
copper tubing provided by the factory. Refer to the
installation drawing provided with your unit for the
size and location of the connection. The humidifier
requires normal tap water for the water supply. If
the supply water is high in particulate, an external
filter may be needed.
CAUTION
Do not use de-mineralized water.
Refer to the humidifier operator’s manual,
supplied with the equipment, for complete
manufacturer’s information on the humidifier and
the supply water recommendations.
In most cases the humidifier empties into the
condensate drain line during the flush/drain cycle.
As an option, the drain for the humidifier may have
a separate connection. Refer to the installation
drawing provided with your unit for the size and
location of the connection.
Pour some water into the condensate drain pan prior
to start-up.
The condensate pump discharge line should be 1/2
inch ID vinyl tubing or 1/2 inch O.D. (maximum)
copper pipe to prevent excessive back flow to the
condensate pump.
Figure 14- Field Installed Condensate Pump
2-12
