JOHNSON CONTROLS
17
SECTION 2 – PRODUCT DESCRIPTION
FORM 150.73-NM1
ISSUE DATE: 09/04/2020
2
• Anti-recycle timer status for each system
• Anti-coincident system start timer condition
• Compressor run status
• No cooling load condition
• Day, date and time
• Daily start/stop times
• Holiday status
• Automatic or manual system lead/lag control
(Discharge Air Temperature control only)
• Automatic lead/lag of compressors within a sys-
tem
• Compressor starts and operating hours (each com-
pressor)
• Status of hot gas valves, and fan operation
• Run permissive status
• Number of compressors running
• Liquid solenoid valve status
• Load and unload timer status
Provisions are included for: pumpdown at shutdown;
optional remote discharge air temperature reset and
two steps of demand load limiting from an external
building automation system. Unit alarm contacts are
standard.
The operating program is stored in non-volatile mem-
ory (EPROM) to eliminate condensing unit failure due
to AC powered failure/battery discharge. Programmed
setpoints are retained in lithium battery-backed RTC
memory for 5 years minimum.
HIGH AMBIENT KIT
Required if units are to operate when the ambient tem-
perature is above 115°F (46°C). Includes sun shield
panels and discharge pressure transducers. (This option
includes the Discharge Pressure Transducer /Readout
Capabil ity option). (Field mounted).
COMMUNICATIONS
• Native communication capability for BACnet®
(MS/TP) and Modbus®.
• Optional communication available for N2 and
LON via eLink option.
* Intensity of Protection European Standard
** International Electrotechnical Commission
POWER PANEL
Each panel contains:
• Compressor power terminals
• Compressor motor starting contactors per l.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 ter-
minal block connection(s) are provided as standard.
The following power connections are available as op-
tions. (See electrical data for specific voltage and op-
tions availability.) (Factory mounted).
Single Point Non-Fused Disconnect Switch – Unit-
mounted disconnect switch(s) with external, lockable
handle (in compliance with Article 440-14 of N.E.C.),
can be supplied to isolate the unit power voltage for
servicing. Separate external fusing must be supplied,
by others in the power wiring, which must comply with
the National Electrical Code and/or local codes.
Single Point Non-Fused Disconnect Switch With
Individual System Breakers - Includes unit-mounted
disconnect switch with external, lockable handles (in
compliance with Article 440-14 of N.E.C.) to isolate
unit power voltage for servicing. Factory interconnect-
ing wiring is provided from the disconnect switch to
factory supplied system circuit breakers.
Single Point Circuit Breaker – (A unit mounted cir-
cuit breaker with external, lockable handle (in compli-
ance with N.E.C. 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 (0.5 kVA or 1.0 kVA capacity). Factory
mounting includes primary- and secondary-wiring be-
tween the transformer and the control panel. (Factory
mounted).
Power Factor Correction Capacitors – Will cor rect
unit compressor power factors to a 0.90-0.95. (Factory
mounted).
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