CyberAiR DX Floor Mounted IOM Manual
STEAM
DISTRIBUT
AIR
FILTERS
ELECTRIC
HUMIDIFIE
MANUAL
RESET OVERHEAT
COMPRESSO
EC
REFRIGERANT
ELECTRIC
REHEAT
ELEMENT
CONDENSATE PUMP
(LOCATION MAY
1.4.2 Internal Layout - Downflow Model
Figure 2 depicts a sample internal layout of a CFD (downflow) unit and identifies the major components. The
location of major components vary depending on model number and options purchased.
Figure 2- Typical Internal Layout- Downflow
Front View - Door and Access Panels Removed
1.4.3 Electric Box Access
The electrical components are protected in an
enclosure located inside the cabinet behind the
hinged access door with the controller display panel.
The front access door is safety interlocked with the
main power service disconnect switch, preventing
the door from being opened when the switch is in
the On position. The main power service disconnect
switch must be turned Off to gain access to the
components within the electric
box. The handle of the switch may be locked in the “Off”
position to prevent unintended operation.
WARNING
With power and controls energized, the unit
could begin operating at any time. To prevent
personal injury, stay clear of rotating components
as automatic controls may start them
unexpectedly.
The main power service disconnect switch may be
used to turn the unit off for performing routine
maintenance. The handle of the switch can be locked
in the “Off” position to prevent unintended operation
.
WARNING
This unit employs high voltage equipment
with rotating components. Exercise extreme
care to avoid accidents. Always keep hands,
clothing and tools clear of the fan blades
when power is On.
1.4.4 Circuit Breakers/Motor
Start Protectors
STULZ CyberAir units incorporate state of the art
component protection with the use of motor start
protectors and circuit breakers. If an overload occurs
the switches must be manually re-set after the
overload condition is cleared.
1.4.5 Compressors
Two scroll compressor circuits are utilized in DX
based STULZ CyberAir systems. With fewer
moving parts, scroll compressors have
demonstrated superior durability. The scroll
compressor is designed around two identical
spirals or scrolls that, when inserted together, form
crescent shaped pockets. During a compression
cycle, one scroll remains stationary while the other
scroll orbits around the first. As this motion
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