York Millennium YCAS 216X, Установка, эксплуатация и обслуживание

Страница: 94 / 144

94
YORK INTERNATIONAL
To program the SYSTEM 1 MOTOR CURR, access the
password protected values as described previously. Key
in the current value that equals 100% FLA and press the
ENTER key. The new value will be entered into memory
and the display will advance to the next user
programmable value.
SYSTEM 2 MOTOR CURR
SYSTEM 2 MOTOR CURR allows the operator to display
the approximate current that the motor is drawing by
pressing the Display key labeled % MOTOR CURRENT.
SYSTEM 2 MOTOR CURR also allows the motor current
to be programmed at 100% full load to permit the micro to
determine the approximate slide valve position when
controlling loading/unloading. This is important to allow
load sharing.
Select the actual current at 100% load by selecting the
chiller model and voltage from Table 2 and its
corresponding AMPS at 100% RLA. Approximate FLA
can be determined by formula: RLA x 1.2 = 100% FLA.
To program the SYSTEM 2 MOTOR CURR, access the
password protected values as described previously. Key
in the current value that equals 100% FLA and press the
ENTER key. The new value will be entered into memory
and the display will advance to the next user
programmable value.
LIQUID INJECTION TEMP LIMIT
LIQUID INJECTION TEMP LIMIT programs the
discharge temperature at which the liquid injection
solenoid is energized to allow liquid to be injected into the
compressor for oil cooling. This assures that temper-
atures of the oil are maintained low enough to assure
proper lubrication and compressor cooling.
The recommended program point is 180°F (82.1°C).
To program the LIQUID INJECTION TEMP LIMIT,
access the password protected values described
previously. Key in the value and press the ENTER key.
The new value will be entered into memory and the display
will advance to the next programmable value.
Once on, the liquid injection will turn off 20°F below the
“ON” temperature.
SYSTEM 1 COND TEMP
If loading/unloading is selected utilizing slide valve %, the
design condensing temperature (discharge pressure
converted to temperature or CTP) at 100% load must be
programmed for each system for the specific model of
chiller that is utilized.
To program SYSTEM 1 COND TEMP, access the
password protected values as previously described. Key
in the value for the specific model number from Table 3
and press the ENTER key. The new value will be entered
into memory and the display will advance to the next
programmable option.
NOTE: Proper operation is dependent on proper
programming of this value.
Shown below is an example of this display:
SYSTEM 2 COND TEMP
If loading/unloading is selected utilizing slide valve %, the
design condensing temperature (discharge pressure
converted to temperature or CTP) at 100% load must be
programmed for each system for the specific model of
chiller that is utilized.
S Y S T E M 2 M O T O R C U R R
1 8 3 A M P S = 1 0 0 % F L A
L I Q U I D I N J E C T I O N
T E M P L I M I T = 1 8 0 . 0 ° F
S Y S T E M 1 C O N D T E M P
1 1 9 . 0 ° F = 1 0 0 % L O A D
TABLE 2 – CHILLER SYS 1 AND SYS 2 MOTOR CURRENT = 100% FLA
MODEL 200 VOLTS (-17) 230 VOLTS (-28) 460 VOLTS (-46) 575 VOLTS (-58)
YCAS ENGR. DATA SYS 1 FLA SYS 2 FLA SYS 1 FLA SYS 2 FLA SYS 1 FLA SYS 2 FLA SYS 1 FLA SYS 2 FLA
140 6A2A2KN6A 338 338 294 294 147 147 118 118
160 6M4M4KN6A 406 406 354 354 176 176 141 141
170 6F5M5NN6A 484 484 421 421 210 210 169 169
180 6F5F5NN6A 484 484 421 421 210 210 169 169
190 6H6F5NN6A 598 484 522 421 259 210 207 169
216 6P7H6NN6A — — — — 320 259 254 207
236 6P7P7NN6A — — — — 320 320 254 254
246 6S7S7NN6A — — — — 320 320 254 254
216x 10H5H5NN6A — — — — 210 210 169 169
236x 10P6H6NN6A — — — — 259 259 207 207
266x 10S7S7NN6A — — — — 320 320 254 254