JOHNSON CONTROLS
18
FORM 150.72-ICOM7
ISSUE DATE: 10/22/2020
SECTION 2 – PRODUCT DESCRIPTION
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 25°F (-3.9°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.
Compressor, Piping, Evaporator Options
Low Temperature Glycol
Replaces standard Thermostatic Expansion Valves
with Electronic Expansion Valves to achieve leaving
glycol temperatures as low as 10°F (-12°C). Required
for any leaving liquid temperature below 30°F (-1°C).
Electronic Expansion Valves permit operation at both
low temperatures and comfort cooling applications
without a capacity loss or derate at either condition.
(Factory installed)
Chicago Code Relief Valves
Unit will be provided with relief valves to meet Chi-
cago code requirements. (Factory-Mounted)
Service Suction Isolation Valve
Service suction (ball-type) isolation valves are added
to unit per system (discharge service ball-type isolation
valve is standard on each circuit). (Factory-Mounted)
Hot Gas By-Pass
Permits continuous, stable operation at capacities below
the minimum step of compressor unloading to as low
as 5% capacity (depending on both the unit and operat-
ing conditions) by introducing an artificial load on the
cooler. Hot gas by-pass is installed on only refrigerant
system #1 on two-circuited units. (Factory-Mounted)
Flanges (ANSI/AWWA C-606 couplings Type)
Consists of (2) Flange adapter for grooved end pipe (stan-
dard 150 psi [10.5 bar] cooler). (Not available on optional
DX cooler 300 psig DWP waterside.) (Field-mounted)
Flow Switch
A thermal dispersion type flow switch provides ac-
curate, low maintenance flow proving and is included
standard. It is factory wired and installed in the exten-
sion pipe between evaporator outlet and edge of chill-
er. The extension pipe is secured to the chiller frame
for shipping to avoid risk of damage to evaporator
and is easily attached to the evaporator at startup us-
ing the supplied ANSI/AWWA C-606 connector. The
flow switch can be deleted if alternate or existing flow
switch is field supplied.
To Next Page
Loading...