York YCUL0045E, Установка, эксплуатация и обслуживание

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JOHNSON CONTROLS
66
FORM 150.63-NM8 (1020)
UNIT CONTROLS
E V A P P U M P I S O N
E V A P H E A T E R I S O F F
S Y S X R U N T I M E
X X - X X - X X - X X D - H - M - S
S Y S X C O M P STATUS
1 = X X X 2 = X X X 3 = X X X
S Y S X L L S V I S O N
H O T G A S S O L I S O F F
S Y S X A M P S = 3 6 . 0
V O L T S = 0 . 8
This display is for chiller applications only and does
not apply to condensing units. However, the evapora-
tor contacts could be used to control the air handler.
Refer to the Unit Operation section under Evaporator
Control Contacts.
The evaporator pump dry contacts are energized when
any compressor is running, or the unit is not OFF on
the daily schedule and the unit switch is on. However,
even if one of above is true, the contacts will not close
if the micropanel has been powered up for less than 30
seconds or if the contacts have been closed in the last
30 seconds to prevent motor overheating.
There are several types of remote systems that can be
used to control or monitor the unit. The following mes-
sages indicate the type of remote control mode active:
NONE – no remote control active. Remote monitoring
may be via ISN.
ISN – York Talk via ISN allows remote load limiting
and temperature reset through an ISN system.
*LOAD LIM – load limiting enabled. Can be either
stage 1 or stage 2 of limiting.
*PWM TEMP – EMS-PWM temperature reset
*Refer to the section on Operating Controls
If the micro is programmed for CURRENT FEEDBACK
ONE PER UNIT under the OPTIONS Key, the display
will show up as the first display prior to the SYS 1
displays. Total chiller current is displayed as shown
below:
If the micro is programmed for CURRENT FEEDBACK
NONE, no current display will appear.
The preceding five messages will appear sequentially,
first for system 1, then for system 2.
The first message indicates the system and the associated
compressors which are running.
The second message indicates the system run time in
days – hours – minutes – seconds. Please note that this
is not accumulated run time but pertains only to the cur-
rent system cycle.
The third message indicates the system, and whether the
liquid line solenoid or EEV pilot solenoid and hot gas
solenoid are being turned on by the I/O Board. Please
note that hot gas in not available for system 2, so there
is no message pertaining to the hot gas solenoid when
system 2 message is displayed.
The fourth message indicates what stage of condenser
fan operation is active. For YCUL0145 to YCUL0255
unless a low ambient kit is added, only stages 1 and 3
will be used to cycle the condenser fans. However, stage
2 may be shown in this display without a low ambient
kit added, but it has no effect.
See the section on Condenser Fan Control in the UNIT
OPERATION section for more information.
The fifth message displays current as sensed by the op -
tional current feedback circuitry. The display reads out
in amps along with the DC feedback voltage from the
module. Current is calculated by 225A • Actual Volts
5 Volts
Individual displays will be present for each system, if
CURRENT FEEDBACK ONE PER SYSTEM is pro-
grammed under the OPTIONS Key. Combined com-
pressor current for each system is displayed.
A C T I V E R E M O T E C T R L
N
O N E
U N I T A M P S = 5 4 . 0
V O L T S = 1 . 2
S Y S X F A N S T A G E 3