CyberAiR DX Floor Mounted IOM Manual
3.0
START-UP/COMMISSIONING
3.1
Operation
For new installations, ensure the unit is ready to
operate by going through the Checklist for
Completed Installation, located in Appendix A, prior
to start-up.
NOTE
A Warranty Registration and Start-Up Checklist is
provided with the unit data package. It should be
completed during start-up and sent to STULZ. This
checklist should be used as a guideline for items
that need to be confirmed during start-up.
Start-up must be performed by a journeyman, refrig-
eration mechanic or an air conditioning technician.
3.2
Step-by-Step Start-Up Instructions
1. Ensure that the control circuit breakers, fan
power switch (motor starter protectors) and
additional built in optional equipment power
switches are turned on.
2. Close all cabinet doors and replace all
equipment removed prior to performing start-
up checks.
3. Apply power to the STULZ CyberAir system at
the main power disconnect switch.
4. Turn on the A/C unit using the system
controller and set the desired values (set
points) for room temperature and humidity.
(Refer to the separate controller operating
instructions included in the data package with
your unit.)
5. Ensure that all fans are rotating correctly and
freely without any unusual noise.
WARNING
This unit employs high voltage equipment
with rotating components. Exercise extreme
care to avoid accidents. Keep hands, clothing
and tools clear of the fan blades when power
is On.
6. Test cooling operation by setting the
temperature set point below actual room
temperature. The compressor should come on
and the discharge air should feel cooler than
the return air.
Both refrigeration circuits must be tested at start-
up. There are several ways to force the second
circuit into operation. Refer to Section 3.3 in the
STULZ
E²
Series Controller Operators Manual
sent in the data package with your unit.
7. Test humidification operation by creating a
demand for humidification. Use an amp meter to
determine current draw of the humidifier. Visually
check for
vapor leaving the steam head or
feel if the cylinder is warm to verify if the
humidifier is operational.
In all cases, 1 to 6 hours might be required to
achieve the desired level or rise in humidity in
the conditioned space. Once room conditions
have been programmed or set, a repeat visit to
the conditioned space may be required to
ensure the humidifier is meeting the room’s
requirements.
8. Test dehumidification operation by creating a
demand for dehumidification. If necessary, set
the dehumidification set point 10% below actual
room conditions, (the set point may already be
below actual room conditions, especially at start-
up). The compressor will energize to begin the
dehumidification process. While in this mode,
room temperature may decrease and the reheat
function may activate. As conditions in the room
change, you may have to readjust the set point
as you check opera- tion.
9. For electric reheat, use an amp meter on the
heater circuit to determine if the heater is
operational. For Hot Water Reheat ensure that
the control signal has energized the hot water
control valve and
the temperature of the water has decreased as it
passes through the unit. In all cases, 1 to 6 hours
might be required to see a desired level of
humidity in the conditioned space. Once room
conditions have been programmed or set, a
repeat visit to
the conditioned site may be required to ensure
the dehumidification mode is meeting the
room’s requirements.
3.3
Microprocessor
Controller Programming
The
E²
microprocessor controller is factory
programmed based on the features selected with the
system. A
user provided BMS may be used to directly
interface to the
E²
controller. The operator may
view all the available menu screens through a BMS,
however, changes may be made only to basic
parameters such as adjusting set points and setting
and acknowledging alarms. More advanced
parameter adjustments
may be made through the user interface display.
Operating instructions for the
E²
controller are
provided separately.
3-1
