Oil Charge; Power Up Controls And Check Oil Heater; Software Configuration; Input The Design Set Points - Carrier AquaEdge 19XR Start-Up, Operation And Maintenance Instructions Manual

Oil Charge

The oil charge for the 19XR:
• Frame 2 compressor — 8 gal (30 L)
• Frame 3 compressor — 8 gal (30 L)
• Frame 4 compressor — 12 gal (45 L)
• Frame 4 compressor with split ring diffuser option —
12 gal (45 L)
• Frame C compressor — 14.1 gal (53.4 L)
• Frame 5 compressor — 22.5 gal (85.2 L)
• Frame E compressor — 15.3 gal (57.9 L)
• Frame 6 compressor — 28.5 gal (107.9 L)
• Frame 7 compressor — 44.4 gal (168 L)
The chiller is shipped with oil in the compressor. When the sump
is full, the oil level should be no higher than the middle of the
upper sight glass, and minimum level is the bottom of the lower
sight glass (Fig. 3-5). If oil is added, it must meet Carrier's spec-
ification for centrifugal compressor use as described in the Oil
Specification section on page 47. Charge the oil through the oil
charging valve located near the bottom of the transmission hous-
ing. The oil must be pumped from the oil container through the
charging valve due to higher refrigerant pressure. The pumping
device must be able to lift from 0 to 200 psig (0 to 1380 kPa) or
above unit pressure. Oil should only be charged or removed
when the chiller is shut down.

Power Up Controls and Check Oil Heater

Ensure that an oil level is visible in the compressor and the
chiller is not in a vacuum before energizing the controls. Typi-
cally for 19XR2-E a circuit breaker in the starter energizes the
oil heater and the control circuit. For 19XR6/7 oil heater and
control circuit is powered from the control panel.
The oil heater is energized by powering the control circuit.
This should be done several hours before start-up to minimize
oil-refrigerant migration. The oil heater is controlled by the
PIC 6 and is powered through a contactor in the power panel
(19XR2-E) control panel (19XR6/7). A separate circuit breaker
powers the heater, oil pump, and the control circuit. This ar-
rangement allows the heater to energize when the main motor
circuit breaker is off for service work or extended shutdowns.

Software Configuration

WARNING
Do not operate the chiller before the control configurations
have been checked and a Control Test has been satisfactori-
ly completed. Protection by safety controls cannot be as-
sumed until all control configurations have been confirmed.
Do not assume the values in the chiller are correct. They
should match the chiller labels and data sheets for the selec-
tion. If you have questions contact the Carrier Technical
Service Manager or Service Engineering.
See the 19XR with PIC 6 Controls Operation and Trouble-
shooting manual for instructions on using the PIC 6 interface to
configure the 19XR unit. As the unit is configured, all configu-
ration settings should be written down. A log, such as the one
shown on pages CL-1 to CL-11, provides a list for configura-
tion values for future reference. When installing new software
ensure to select to keep all configuration data so all data does
not have to be reentered manually.

Input the Design Set Points

To access the set point screen, press the Main Menu icon on the
home screen. See Fig. 21.
Fig. 21 — Main Menu Icon
The Main Menu screen is displayed. Press the Set Point Table
icon (Fig. 22). Note that Login level must exceed Basic to have
access to this set point.
Fig. 22 — Main Menu — Set Point Table Icon
The set point screen is displayed (see Fig. 23). Set the base de-
mand limit set point, and either the LCW set point or the ECW set
point. To set a value, press the appropriate set point, enter the val-
ue, and press OK. For more information, see the 19XR with PIC 6
Controls Operation and Troubleshooting manual.
Fig. 23 — Set Point Table Screen

Input the Local Occupied Schedule

Access the schedule screen and set up the occupied time schedule ac-
cording to the customer's requirements. If no schedule is available,
the default is factory set for 24 hours occupied, 7 days per week in-
cluding holidays. The Schedule Menu as well as the Holiday Menu
can be reached through the Configuration Menu (see Appendix A on
page 109 for an overview of the available menus). When the control
mode is LOCAL SCHEDULE, the chiller will be automatically
started if the configured local schedule is occupied; it will be shut
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