Stulz FLAIR series, Installation, Operation And Maintanance Manual

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FLAiR Series Installation, Operation & Maintenance Manual
(©Aug, 2007)
Air Technology Systems, Inc.
2-8
NOTE
The installer must ensure the power and control
conduits allow for full accessibility to compo-
nents that require service.
2.7.1.1 Single-Phase Units 208/230/277V
Single-phase units require the hot leg of power to be
connected to terminal L1 and the neutral wire to
terminal L2 of the main power non-fused service
switch.
2.7.1.3 Three-Phase Units
Three-phase units are designed to have the L1, L2 and
L3 supply wires connected to corresponding L1, L2
and L3 line terminals of the non-fused service switch.
The unit will operate correctly if the supply wires are
connected in this manner.
CAUTION
Improper wire connections will result in the
reverse rotation of the fans/blower motors and
compressor (if applicable) and may eventually
result in damage to the compressor. To correct
this problem, exchange any two of the incoming
main power wires at the main power non-fused
service switch. Do NOT rewire the unit's indi-
vidual components.
A ground lug is provided in each unit near the non-
fused service switch. Prior to unit operation, an
adequate unit-to-earth ground must be connected to
the unit.
2.7.2 Controls
SATS offers a wide range of control features to solve
your air conditioning control/alarm requirements. If the
system controller is mounted on the unit (standard),
no utility connection is required. As an option the
display may be remote mounted. A six-conductor
cable, or cable harness, will be provided for intercon-
nect wiring. Refer to Figures 7 thru 9 and to the
electrical schematic supplied with your unit for details
on interconnecting field wiring.
2.7.3 Optional Equipment
NOTE
All wiring must be provided in accordance with
local and national electrical code requirements.
2.7.3.1 Condensate Pump
If an optional condensate pump is selected, it is
normally factory installed and wired inside the A/C
unit.
Systems supplied with an optional field installed
condensate pump will require power and control wiring
to be connected to the unit. After proper installation of
the condensate pump, the installer must connect two
power conductors from the condensate pump main
power terminals to the air conditioning unit. A ground
wire must be connected to the unit ground stud
located within the unit electric box.
Two control conductors must be wired to the control
terminal board located within the A/C unit unit electric
box. The control wires from the terminal board in the
electric box should be run through the overflow switch
in the condensate pump housing. The condensate
pump is equipped with pigtail leads for splice-type wire
connections with twist-on connectors (wire caps).
Refer to the electrical schematic supplied with your
unit for proper wire terminations.
2.7.3.2 Remote Temperature/Humidity Sensor
The remote temperature/humidity sensor requires a
shielded cable with the shield being terminated at the
unit electric box. The number of conductors needed
depends on which system controller is utilized. For
systems utilizing the model C6000 controller, three
control conductors are required. Systems utilizing the
A-Tech 20 controller require five control conductors.
Both the electric box and the sensor include a terminal
strip with box type lugs for wire connections. Refer to
the electrical schematic supplied with your unit for the
number of conductors required and for the appropriate
wire terminations.
2.7.3.3 Remote Water Detector
Each remote water detector used will require two
conductors to be wired to the control terminal board
within the unit electrical box. The wire insulation must
be rated at 600V. Refer to the electrical schematic
supplied with your unit for proper wire terminations.