System Pilot™ And Touch Pilot™ Devices; Ccn Tables And Display; Start-Up; Unit Preparation - Carrier 48LC Series Controls, Start-Up, Operation And Troubleshooting

System Pilot™ and Touch Pilot™ Devices
The System Pilot device (33PILOT-01) and Touch Pilot device
(33CNTPILOT) can be used as CCN communication user in-
terfaces. These devices can be put on the CCN bus and ad-
dressed to communicate with any other device on the network.
Unlike the SystemVu™ display and Navigator display, these
pilots read the unit's CCN tables and its CCN points can be
monitored, forced, or configured. The Pilot devices can be
used to install and commission a 3V™ zoning system, linkage
compatible air source, universal controller, and all other devic-
es operating on the Carrier communicating network.
Additionally, the System Pilot device can serve as a wall-
mounted temperature sensor for space temperature measure-
ment. Occupants can use the System Pilot device to change set
points. See Fig. 5 for System Pilot device details.
NAVIGATE/
EXIT
SCROLL
Fig. 5 — System Pilot™ User Interface

CCN Tables and Display

In addition to the unit-mounted SystemVu display, the user can
also access the same information through the CCN tables by
using the service tool or other CCN programs/devices. The
variable names used for the CCN tables and the SystemVu dis-
play menus may be different and more items may be displayed
in the CCN tables. Details on the CCN tables are included in
Appendix D.
FORCE HIERARCHY
There is a hierarchy in SystemVu controls with regards to forc-
ing a point. Programs and devices write a force at different pri-
ority levels. A higher level (smaller number, 1 being the high-
est) will override a lower level force. The SystemVu controller
uses a Control Force at level 7. The Navigator device writes a
Service Force which is level 3. System Pilot and Touch Pilot
devices write Supervisor Forces at level 4. Network programs
can be set to write different level priority forces.
NOTE: In the case of a control power reset, any force in effect at
the time of power reset will be cleared.
IMPORTANT: All further discussions and examples in this
document will be based on the SystemVu controller.
MODIFY/
SELECT
+
PAGE
-
IMPORTANT: Do not attempt to start unit, even momentar-
ily, until all items on the Start-Up Checklist (see CL-1, CL-2)
and the following steps have been read/completed.

Unit Preparation

Check that unit has been installed in accordance with these in-
stallation instructions and all applicable codes. See Fig. 6-9 for
panel locations.

Refrigerant Service Ports

The refrigerant system has a total of 3 Schrader-type service
gage ports per circuit. One port is located on the suction line,
one on the compressor discharge line, and one on the liquid
line. Be sure that caps on the ports are tight.

Crankcase Heater

The compressor is equipped with a crankcase heater. There is a
control function used to turn the crankcase heaters on and off
when the compressor is not running. This is a configurable val-
ue for which the factory default value is set to 65°F. If the am-
bient is above the selected value, the control will prevent the
crankcase heater from turning on.
IMPORTANT: Unit power must be on for 24 hours prior to
start-up to allow the crankcase heater to run. Otherwise,
damage to the compressor may result.

Compressor Rotation

UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit damage.
Improper wiring will cause compressor stoppage and
alarm. Correct wiring by switching leads as indicated in the
following section.
On 3-phase units, it is important to be certain the compressors
are rotating in the proper direction. To determine whether or
not compressors are rotating in the proper direction, use a
phase-rotation meter on the unit input power to check for L1-
L2-L3 or clockwise rotation or use the Service Test mode to
energize a compressor. If the compressor is rotating in the
wrong direction, the controls will stop the compressor and dis-
play alarm for "Circuit A Reverse Rotation".
NOTE: Indoor or outdoor fan rotation direction may not indicate
proper input power phase sequence, as some 3-phase units use sin-
gle-phase fan motors.
To correct the wrong compressor rotation direction, perform
the following procedure:
1. Turn off power to the unit and lock out the power.
2. Switch any two of the incoming unit power leads.
3. Turn on power to the unit.
4. Verify corrected compressor rotation.

Power Supply

All 208/230-v units are factory wired for 230-v power supply.
If the 208/230-v unit is to be connected to a 208-v power sup-
ply, the transformers must be rewired by moving the wire from
the 230-volt connection and moving to the 200-volt terminal
on the primary side of the transformer. Refer to unit label dia-
gram for additional information.
7

START-UP

CAUTION