To View And Change Set Points; Service Operation - Carrier 19XR User Manual
Hermetic centrifugal liquid chillers 50/60 hz with pic ii controls and hfc-134a
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Also See for 19XR:
- Start-up, operation and maintenance instructions manual (116 pages) ,
- Installation instructions manual (68 pages) ,
- Product data (52 pages)
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7. Press
to register the values and to move hori-
ENTER
zontally (left to right) within a period.
8. Press
to leave the period or override.
EXIT
9. Either return to Step 4 to select another period or over-
ride, or press
again to leave the current time
EXIT
schedule screen and save the changes.
10. The Holiday Designation (HOLIDEF table) may be
found in the Service Operation section, page 45. The
month, day, and duration for the holiday must be
assigned. The Broadcast function in the BRODEF
table also must be enabled for holiday periods to
function.
TO VIEW AND CHANGE SET POINTS (Fig. 20)
1. To view the SETPOINT table, from the MENU screen
press
.
SETPOINT
SETPOINT SELECT
19XR_II
SETPOINT
Base Demand Limit
100%
Control Point
LCW Setpoint
50.0 F
ECW Setpoint
60.0 F
ICE BUILD Setpoint
40.0 F
Tower Fan High Setpoint
85.0 F
Fig. 20 — Example of Set Point Screen
2. There are 5 set points on this screen: BASE DEMAND
LIMIT, LCW SETPOINT (leaving chilled water set
point), ECW SETPOINT (entering chilled water set
point), ICE BUILD SETPOINT, and TOWER FAN
HIGH SETPOINT. Only one of the chilled water set
points can be active at one time. The set point that is
active is determined from the SERVICE menu. See the
Service Operation section, page 45. The ice build (ICE
BUILD) function is also activated and configured from
the SERVICE menu.
3. Press
or
to highlight the desired
NEXT
PREVIOUS
set point entry.
4. Press
to modify the highlighted set point.
SELECT
5. Press
or
to change the select-
INCREASE
DECREASE
ed set point value.
6. Press
to save the changes and return to the pre-
ENTER
vious screen.
SERVICE OPERATION — To view the menu-driven pro-
grams available for Service Operation, see Service Operation
section, page 45. For examples of CVC/ICVC display screens,
see Table 2.
Page 21
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