Carrier PrimeLINE 69NT40-561-200, Руководство по эксплуатации и обслуживанию

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4–15 T-362
Cd53 Automatic Setpoint Change (ASC) Mode Parameter Selection
Cd53 controls the Automated Setpoint Change (ASC) Mode option, which allows up to 6 setpoint changes
to be pre-programmed over defined periods.
If the unit is not configured for ASC, then this will not be allowed and Cd53 will display dashes “-----”.
Cd53 initially displays the countdown timer in days and hours remaining in the right display, regardless of
whether it is enabled. In the Cd53 menu, pressing the ENTER key takes the interface down into a
hierarchy of parameter selections. After the last parameter selection, pressing the ENTER key will return
to “Cd 53”.
Cd53 Parameter Selections:
“Cd 53” | “X- X” (default “0-0”) || Countdown timer in days, hours
“ASC” | “On” “OFF” or “----” (default “OFF“) || Enabled or disabled status
“nSC” | “X” (default “1“) || Number of setpoint changes, select from 1 to 6
“SP X” | “XX.X°C” (default “0.0°C”) || Setpoint edited in increments of 0.1 degrees
“DAY (nSC-1)” | “X” (default “1“) || 1 to 99 in increments of 1
“SP (nSC)” | “X.X°C” (default “10.0°C“) || Setpoint after ACT, edited in increments of 0.1 degrees
Turn On ASC:
With “ASC” displayed, select “On” and press the ENTER key to enable ASC Mode. See
Section 5.10.5
for detail procedure to set ASC values using Cd53.
While ASC is On:
• The left display will alternate between current unit setpoint and “ASC”. The right display will alternate
between current control temperature and “ACtiV”.
• ACT (Cd51) is disabled. ASC and ACT can not be enabled simultaneously.
• QUEST Mode is suspended but QUEST II can still operate
ASC Complete:
At completion of ASC mode, the left hand display will alternate between current unit setpoint and “ASC”.
The right hand display will alternate between current control temperature and “Done”. The display will
remain this way until ASC is turned off. With ASC complete, the second entry in the Cd53 menu will show
“done” in the left display, and the Month / Day of completion in the right display.
Turn Off ASC:
ASC Mode is turned Off automatically when any Auto Pre-Trip test or Trip Start is initiated.
With “ASC” displayed, select “OFF” and press the ENTER key to disable ASC Mode manually.
Display Only Functions
- Cd54 through Cd58 are display only functions.
Cd54 Suction Port Superheat / Electronic Expansion Valve Status
Cd54 displays the reading for evaporator superheat (suction temperature minus suction saturation
temperature as calculated from suction pressure) in the right display.
Press the ENTER key at Cd54 to show the reading for EEV position (in %) in the left display.
Cd55 Discharge Superheat
Cd55 displays the discharge superheat (discharge temperature minus discharge saturation temperature
as calculated from discharge pressure) values in C /F as calculated by the discharge temperature minus
the discharge saturation temperature as calculated from discharge pressure.
If this selection is not valid, dashes “-----” will be displayed.
Table 4–4 Controller Function Codes
Code Description