York YCAL0012EC, Установка, эксплуатация и обслуживание

Страница: 127 / 166

FORM 150.66-NM2
ISSUE DATE: 09/25/2020
127
JOHNSON CONTROLS
SECTION 7 - UNIT CONTROlS
7
Even if one of the above conditions
are true, the pump will not run if the
chiller has been powered up for less
than 30 seconds; or if the pump has
run in the last 30 seconds to prevent
pump overheating.
EXTERNAL EVAP PUMP should be selected if an
external pump is being controlled with the chiller pump
contacts. The operation will be the same as YORK
HDRO KIT PUMPS = 1
The following option should not be selected.
Option 19 – Pump Selection:
The displays for this PUMP SELECTION option should
only appear if “YORK HYDRO KIT PUMPS = 2” are
selected under Option 18.
Selecting Manual Pump 1 allows pump 1 to operate as
the duty pump without automatic change over to pump 2.
Selecting Manual Pump 2 allows pump 2 to operate as
the duty pump without automatic change over to pump 1.
Selecting Automatic allows both pumps to operate as
the duty pump with automatic change over to standby,
if a pump trip occurs.
CLOCK
The CLOCK display shows the current day, time, and
date. Pressing the CLOCK key will show the current
day, time, and date.
It is important that the date and time be correct,
otherwise the daily schedule will not function as desired
if programmed. In addition, for ease of troubleshooting
via the History printouts, the day, time, and date should
be correct.
To change the day, time, and date press the CLOCK
key. The display will show something similar to the
following:
The line under the F is the cursor. If the day is correct,
press the ENTER/ADV key. The cursor will move under
the 0 in 08 hours. If the day is incorrect, press the ↑
(UP) or ↓ (DOWN) arrow keys until the desired day is
displayed and then press the ENTER/ADV key at which
time the day will be accepted and the cursor will move
under the first digit of the “2 digit hour”. In a similar
manner, the hour, minute, meridian, month, day, and
year may be programmed, whenever the cursor is under
the first letter/numeral of the item. Press the ↑ (UP) or
↓ (DOWN) arrow keys until the desired hour, minute,
meridian; day, month, and year are displayed. Pressing
the ENTER/ADV Key will save the valve and move the
cursor on to the next programmable variable.
E X T E R N A L
E V A P P U M P
Y O R K H Y D R O
K I T P U M P S = 2
T O D A Y I S F R I 0 8 : 5 1 A M
2 5 J A
N 0 8
P U M P S E L E C T I 0 N
M A N U A L P U M P N O 1
P U M P S E L E C T I 0 N
M A N U A L P U M P N O 2
P U M P S E L E C T I O N
A U T O M A T I C