York YCAL0012EC, Установка, эксплуатация и обслуживание

Страница: 126 / 166

JOHNSON CONTROLS
126
FORM 150.66-NM2
ISSUE DATE: 09/25/2020
SECTION 7 - UNIT CONTROlS
Option 15 – Expansion Valve Type:
Expansion valve type, thermostatic or electronic
may be selected under Service Mode. Expansion
valve type is displayed under the Options key, but is
only programmable in Service Mode. YCAL 0012
– 0032 chillers will typically always be equipped with
thermostatic expansion valves.
Incorrect programming may cause
damage to compressors.
Also see the UNIT KEYS PROGRAMMING QUICK
REFERENCE LIST in Table 18.
Option 16 – Flash Card Update:
A Flash Card is used to input the operating program
into the chiller IPU. A Flash Card is used instead of an
EPROM. Normally, a Flash Card update is not required
and the message above will be displayed.
If the operating software is to be updated, insert the
Flash Card into the Flash Card input port. Turn off the
unit switch and set the FLASH CARD UPDATE TO
“ENABLED” using the ↑ and ↓ keys.
Press the ENTER key and the following message will
be displayed until the update has been completed. The
keypad and display will not respond during the update.
DO NOT reset or power down the chiller until the update
is completed.
After the update is completed, an automatic reboot will
occur. If an error occurred, the following message will
appear with the error code and no reboot will occur:
If the update resulted in an error, the original program
will still be active. When an error occurs, ensure
the correct Flash Card was utilized. Incorrect chiller
software will cause an error. If this is not the case, the
Flash Card is most likely defective or the IPU and I/O
combo board is bad.
Option 17 – Remote Temperature Reset:
Remote Temp Reset input selection is programmable
according to the type of input utilized. The following
options are available:
• DISABlED (default)
• 0.0 – 10.0V (DC)
• 2.0 – 10.0V (DC)
• 0.0 – 20.0 mA
• 4.0 – 20.0 mA
The options display message for Re­
mote Temp Reset Input only appears if
the Temp reset Option is enabled under
Service Mode.
Option 18 – Pump Control:
Pump Control is utilized to operate the optional onboard
pump kit or to control an external pump through dry
contacts 23 and 24. To use this option, the following
selection should be made in the Service Mode:
When YORK HYDRO KIT PUMPS = 1, the controls
will be closed to run the pumps whenever any one of
the following conditions are true:
• low leaving Chilled liquid Fault
• Any compressor is running
• Daily Schedule is ON and Remote Stop is
closed.
E X P A N S I O N V A L V E T Y P E
T H E R M O S T A T I C
F L A S H C A R D U P D A T I N G
P L E A S E W A I T . . .
F L A S H C A R D U P D A T E
E R
R O R XXXXX
F L A S H C A R D U P D A T E
D I S A B L E D
F L A S H C A R D U P D A T E
E N A B L E D
R E M O T E T E M P R E S E T
I
N P U T XXXXXXXXXXXXXX
Y O R K H Y D R O
K I T P U M P S = 1