Johnson Controls YORK Tempo YLAA Series, Installation Operation & Maintenance

Page: 144 / 192

JOHNSON CONTROLS
144
FORM 150.72-NM1 (1020)
Unit Controls
*
Refer to Engineering Guide for operation below 30 °F (-1.1 °C). Alternate thermal expansion valves must be used
below 30 °F (-1.1 °C).
* When using glycol, Leaving Chilled Liquid Setpoint should not be set below 20 °F (-6.7 °C).
** Do not exceed 55 °F (12.8 °C) setpoint before contacting the nearest Johnson Controls Office for application
guidelines.
The line under the 0 is the cursor. If the value is wrong,
it may be changed by using the ↑ (UP) and ↓ (DOWN)
arrow keys until correct. Pressing the ENTER/ADV
key will enter the times and then move the cursor to the
minute box. The operation is then repeated if necessary.
This process may be followed until the hour, minutes,
and meridian (AM or PM) of both the START and STOP
points are set. After changing the meridian of the stop
time, pressing the ENTER/ADV key will advance the
schedule to the next day.
Whenever the daily schedule is changed
for Monday, all the other days will
change to the new Monday schedule.
This means if the Monday times are
not applicable for the whole week then
the exceptional days would need to be
reprogrammed to the desired sched -
ule.
To page to a specific day, press the SCHEDULE/
ADVANCE DAY
key until the desired day appears. The
start and stop time of each day may be programmed
differently using the ↑ (UP) and ↓ (DOWN) arrow, and
ENTER/ADV keys.
After SUN (Sunday) schedule appears on the display a
subsequent press of the SCHEDULE/ADVANCE DAY
key will display the Holiday schedule. This is a two part
display. The first reads:
The times may be set using the same procedure as
described above for the days of the week. After
changing the meridian of the stop time, pressing the
ENTER/ADV key will advance the schedule to the
following display:
The line below the empty space next to the S is the
cursor and will move to the next empty space when
the ENTER/ADV key is pressed. To set the Holiday,
the cursor is moved to the space following the day of
the week of the holiday and the ↑ (UP) arrow key is
pressed. An * will appear in the space signifying that
day as a holiday. The * can be removed by pressing the
↓ (DOWN) arrow key.
The Holiday schedule must be programmed weekly
–once the Holiday schedule runs, it will revert to the
normal daily schedule.
H O L S T A R T = 0 0 : 0 0 A M
S T O P = 0 0 : 0 0 A M
S __ M T W T F S
H O L I D A Y N O T E D B Y *
TABLE 10 – COOLING SETPOINTS, PROGRAMMABLE LIMITS AND DEFAULTS
SETPOINT KEY MODE LOW LIMIT HIGH LIMIT DEFAULT
LEAVING CHILLED LIQUID SETPOINT
WATER COOLING
40.0°F
4.4°C
**70.0°F
21.1°C
44.0°F
6.7°C
GLYCOL
COOLING*
10.0°F
-12.2°C
**70.0°F
21.1°C
44.0°F
6.7°C
LEAVING CHILLED LIQUID CONTROL RANGE —
1.5°F
0.8°C
2.5°F
1.4°C
2.0°F
1.1°C
RETURNED CHILLED LIQUID SETPOINT
WATER COOLING
40.0°F
4.4°C
70.0°F
21.1°C
44.0°F
6.7°C
GLYCOL
COOLING*
10.0°F
-12.2°C
70.0°F
21.1°C
44.0°F
6.7°C
RETURN CHILLED LIQUID CONTROL RANGE
— 4.0°F
2.2°C
20.0°F
11.1°C 10.0°F
5.6°C
MAX EMS-PWM REMOTE TEMPERATURE RESET —
2°F
1.0°C
40°F
22.0°C
20°F
11.0°C