Johnson Controls York YCAL0014E Series User Manual

JOHNSON CONTROLS
106
FORM 150.62-NM6 (103)
Unit Controls
Program
The superheat setpoint is programmable under the Pro-
gram key. Superheat may be programmed for 10°F to
15°F, with 12°F as the default. It is recommended that a
12°F to 15°F setpoint be used for most applications.
Safeties
Two safeties are associated with the EEV, the low su-
perheat safety and the sensor fault safety. Details are
outlined in the System Safeties section.
CONDENSER FAN CONTROL
(YCAL0014 – YCAL0080 CHILLERS)
Condenser fan operation must be programmed with the
Options key under “Fan Control.” Condenser fan control
can be selected for Ambient Temp. and Disch. Pressure,
or Discharge Pressure Only.
The condenser fan control by “Ambient Temperature
and Discharge Pressure” is a feature that is integral to
the standard software control. If the optional discharge
transducer is not installed, the condenser fans will op-
erate based on outdoor ambient temperature only. See
Table 27.
The condenser fan control by “Discharge Pressure” is
a feature that can be selected if the discharge pres-
sure transducer is installed and fan recycling is not a
concern. Fan control by discharge pressure will work
according to Table 28. The fan control on-pressure and
fan differential off-pressure are programmable under
the PROGRAM key.
CONDENSER FAN CONTROL
(YCAL0090 – YCAL0124)
YCAL0090 - YCAL0124 fan control will be by discharge
pressure only. See Tables 30 - 31.
LOW AMBIENT CONDENSER FAN CONTROL
(YCAL0014 – YCAL0080)
(YCAL0090 – YCAL0124 always operate in Low
Ambient Mode)
For unit operation below 25°F (-3.9°C) a low ambient
kit is required. The kit consists of a discharge pressure
transducer(s) and reversing contactors.
With the low ambient kit installed and the unit pro-
grammed for low ambient operation, the condenser
fans will operate as shown in Table 29 (YCAL0014
– YCAL0080) YCAL0090 – YCAL0124 is shown in
Tables 30 - 32.
Condenser fan operation will controlled by discharge
pressure control only.
The fan control on-pressure and the fan differential
off-pressure are programmable under the PROGRAM
key.
A low ambient kit MUST be installed
when “AMBIENT CONTROL
LOW AMBIENT” is selected under
the OPTIONS key on YCAL0014
– YCAL0080.
Compressor damage could occur if
programming does not match installed
hardware.

Johnson Controls York YCAL0014E Series Specifications

General

Brand	Johnson Controls
Model	York YCAL0014E Series
Category	Chiller
Language	English