Stulz FLAIR series, Installation, Operation And Maintanance Manual

Page: 10 / 48

(©Aug, 2007)
FLAiR Series Installation, Operation & Maintenance Manual
Air Technology Systems, Inc.
1-6
1.5 General Design
The FLAiR precision A/C unit is housed in a steel
frame type cabinet and is rated for indoor use. The
exterior of the cabinet is coated with a powder coat
finish to protect against corrosion. Access panels/
doors are located in the front of the cabinet for easy
access to all components. Operator controls are
conveniently located on the front of the cabinet.
Figures 2 and 3 depict typical layouts of
FLAiR units
and identifies the major components.
1.5.1 Electrical Compartment
The electrical components are protected in a compart-
ment located behind an access panel/door. The
location of the electrical compartment varies depend-
ing on the control options supplied with your precision
A/C unit.
FLAiR units furnished with a C6000 controller
have an access door that swings open from the top,
(see Figure 2).
FLAiR units furnished with an A-Tech
20 controller include an enclosure for the electrical
components, located behind a removable access
panel on the left front of the unit, (see Figure 3).
1.5.1.1 Service Disconnect Switch
The electric compartment access door is safety
interlocked with the main power, service disconnect
switch. The door is prevented from being opened when
the switch in the “On” position. The switch must be
turned “Off” to gain access to the electrical compart-
ment. The service disconnect switch may be used to
turn the unit off for emergency shutdown or
when
routine maintenance is performed. The handle of the
switch may be locked in the “Off” position to prevent
unintended operation
.
1.5.1.2 Fuses, Circuit Breakers, Motor Start
Protectors
Individual overload protection is provided by fuses or
circuit breaker(s) and motor start protectors (MSP’s).
Fuses must be replaced once the overload condition is
cleared. Circuit breakers and MSP’s must be manually
re-set.
1.5.2 Impeller Fan(s)
FLAiR A/C units furnished with C6000 controllers are
equipped with highly efficient, motorized impeller
fan(s). The quantity of fans varies depending upon the
capacity of the A/C unit. Each fan is direct driven by a
permanent split capacitor motor equipped with mainte-
nance free ball bearings. The fans are equipped with
backward inclined, non-metallic impellers designed for
high aerodynamic efficiency, which results in lower
power consumption, lower noise levels and longer
operating life.
C6000 CONTROLLER
OUTLET GRILLE
IMPELLER
FAN(S)
FILTERS- (CUT-AWAY TO
SHOW INTERNAL PARTS
SMOKE DETECTOR
(OPTIONAL)
COMPRESSOR
T/H SENSOR CONDENSATE PUMP
(OPTIONAL)
SERVICE
DISCONNECT SWITCH
HUMIDIFIER
(OPTIONAL)
COIL
TUBE-IN-TUBE
HEAT EXCHANGER COIL
(W/G UNITS ONLY)
DOOR HINGE
(NOTE 1)
NOTE 1: CABINET DOORS REMOVED
TO SHOW INTERNAL PARTS
DOOR HINGE
(NOTE 1)
SWING OPEN TOP
TO ACCESS ELECTRICAL
COMPARTMENT
ELECTRICAL
COMPARTMENT
FRONT
LEFT SIDE
FIRESTAT
(OPTIONAL)
Figure 2- Typical Layout with C6000 Controller