Communications; Building Automation System Interface; Power Panel; Accessories And Options - York YLAA0041 Manual

SECTION 2 – PRODUCT DESCRIPTION
The operating program is stored in non-volatile memo-
ry battery backed RAM to eliminate chiller failure due
to AC powered failure/battery discharge. Programmed
setpoints are retained in lithium battery-backed RTC
memory for 5 years minimum.

COMMUNICATIONS

• Native communication capability for BACnet
(MS/TP) and Modbus.
• Optional communication available for N2 and
LON via eLink Gateway option.
BUILDING AUTOMATION SYSTEM
INTERFACE
The Microprocessor Board can accept a 4 mA to 20
mA, or 0 VDC to 10 VDC input to reset the leaving
chiller liquid temperature from a Building Automation
System.
• The standard unit capabilities include remote
start-stop, remote water temperature reset via a
PWM 4 mA to 20 mA or 0 VDC to 10 VDC input
signal or up to two stages of demand (load) limit-
ing depending on model.
• The standard control panel can be directly con-
nected to a Johnson Controls Building Automated
System.

POWER PANEL

Each panel contains:
• Compressor power terminals
• Compressor motor starting contactors per I.E.C.**
• Control power terminals to accept incoming for
115-1-60 control power
• Fan contactors and overload current protection
The power wiring is routed through liquid-tight con-
duit to the compressors and fans.

ACCESSORIES AND OPTIONS

Power Options
Compressor Power Connections
Single-point terminal block connection(s) are provid-
ed as standard. The following power connections are
available as options. (See electrical data for specific
voltage and options availability.) (Factory-mounted)
18
Single-Point Supply Terminal Block
Includes enclosure, terminal-block, and interconnect-
ing wiring to the compressors. Separate external pro-
tection must be supplied, by others, in the incoming
compressor-power wiring. (Do not include this op-
tion if either the Single-Point Non-Fused Disconnect
Switch or Single-Point Circuit Breaker options have
been included.)
Single-Point Non-Fused Disconnect Switch
Unit-mounted disconnect switch with external, lockable
handle (in compliance with Article 440-14 of NEC), can
be supplied to isolate the unit power voltage for servic-
ing. Separate external fusing must be supplied, by others
in the power wiring, which must comply with the Na-
tional Electrical Code and/or local codes.
Single-Point Circuit Breaker
A unit mounted circuit breaker with external, lockable
handle (in compliance with NEC Article 440-14), can be
supplied to isolate the power voltage for servicing. (This
option includes the Single-Point Power connection.)
Control Transformer
Converts unit power voltage to 115-1-60 (2.0 or 3.0
KVA capacity). Factory mounting includes primary
and secondary wiring between the transformer and the
control panel. (Factory-mounted)
Control Options
Ambient Kit (Low)
Units will operate to 30°F (-1.1°C). This accessory in-
cludes all necessary components to permit chiller op-
eration to 0°F (-18°C) or -10°F (-23°C) with variable
speed fans. (This option includes the Discharge Pressure
Transducer / Readout Capability option.) For proper
head pressure control in applications below 30°F (-1°C)
where wind gusts may exceed 5 mph, it is recommend-
ed that Optional Condenser Louvered Enclosure Panels
also be included. (Factory-mounted)
High Ambient Kit With Sunshield
Allows units to operate when the ambient temperature
is above 115°F (46°C). Includes sun shield panels and
discharge pressure transducers.
Language LCD and Keypad Display
Spanish, French, German, and Italian unit LCD con-
trols and keypad display available. Standard language
is English.
FORM 150.72-ICOM6
ISSUE DATE: 08/03/2022
JOHNSON CONTROLS