(Mar, 2012)
CeilAiR OHS Series Installation, Operation & Maintenance Manual
Air Technology Systems, Inc.
2-4
2.4.4.2 Condensate Pump (Field Installed)
The condensate pump should be as near to the air
conditioning system as possible. The inlet holes in
the pump must be below the lowest part of drain from
unit. The pump has two mounting supports so it can
be hung on an adjacent wall. Ensure that the pump is
level for proper operation.
2.4.4.3 Non-Fused Service Switch
The non-fused service switch is used to disconnect
main power and isolate the unit during maintenance
and service. The switch has a lockable handle to lock
power out during maintenance periods. The switch is
typically mounted to the A/C cabinet however, it may
be shipped loose for fi eld installation. The case has a
top keyhole slotting mount and two holes in each bot-
tom corner for mounting. The hardware for mounting
the switch is to be fi eld supplied so as to be compat-
ible with the particular mounting surface.
The non-fused service switch can be mounted near
the unit or in a central location. The non-fused ser-
vice switches are rated for either indoor or outdoor
use. Ensure that the proper type for your application
is used.
NOTE
Refer to local and national electrical codes for
the appropriate mounting location.
2.4.5 Remote Sensors
The remote temperature sensor or the tempera-
ture/humidity (T/H) sensor must be located so that it
will properly sense the temperature and/or humidity
conditions to be controlled. The sensor should not be
mounted near a doorway or an area where it would
be exposed to direct sunlight. When locating the sen-
sor, consider the length of wire to be used. As an op-
tion, a 75 foot or 150 foot long cable may be provided
by SATS. Refer to the applicable section that follows
to mount the sensor. For unit wiring details, refer to
Section 2.7, Utility Connections and to the electrical
diagrams provided with the unit.
2.4.5.1 Remote Temperature Sensor (A-Tech 1.1
&
A-Tech
1.2)
NOTE
The remote temperature sensor has a maxi-
mum range of 300 feet.
1. Open the sensor case by depressing the button on
the bottom edge of the case until the latch releases.
2. Remove the cover by pulling it out and up at the
bottom.
3. Remove the circuit board from the base by
pulling back the latch that holds it at the center
bottom.
4. Use the base as a template to mark the mounting
holes location on the wall.
5. Using a ¼ inch drill, drill the holes and insert the
provided wall anchors.
6. Run the wires coming out of the wall through the
opening in the base, then secure the base with
the screws provided.
7. Snap the circuit board back into the base. Ensure
that the latch holds the board properly and that
the sensor element is positioned under the holes
in the cover but not touching the cover or base.
8. Make the wiring connections.
9. Replace the cover.
2.4.5.2 Remote Temperature/Humidity Sensor
1. Remove the cover from the base of the sensor by
squeezing it at the top and bottom.
2. Place the base temporarily over the wire hole
opening in the wall. Level the base and mark the
mounting hole locations through the two slots.
3. Drill the mounting holes and insert the provided
wall anchors.
4. Run a 3 conductor shielded cable through the
opening in the base, then secure the base with
screws ensuring the word TOP on the PC board
is oriented upward.
5. Make the wiring connections.
6. Replace the cover plate on the base.
CAUTION
Take care not damage the exposed tempera-
ture/humidity sensors on the PC board while
screwing in the cover fastening screw. The sen-
sors can be damaged if handled improperly.
2.4.5.3 Remote Water Detector
The remote water detector is normally placed in an
auxiliary drain pan located under the
unit. It may be attached using double
sided tape or with the mounting holes
provided in the fl anges (one on each
side). Once it’s in place, loosen the
screws provided on the mounting legs
to adjust the height of the sensing probes.
Содержание CeilAiR Series
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