23
JOHNSON CONTROLS
SECTION 2 – PRODUCT DESCRIPTION
FORM 150.67-NM1
ISSUE DATE: 4/28/2017
2
Suction Pressure Transducers
Permits unit to sense and display suction pressure.
This capability is standard on YCAL0019 through
YCAL0066 models.
Motor Current Module
Capable of monitoring compressor motor current. Pro-
vides extra protection against compressor reverse rota-
tion, phase-loss and phase imbalance. Option consists of
one module per electrical system (Factory-Mounted).
Multi-Unit Sequencing
A separate Sequencing Control Center can be provided
to handle sequencing control of up to eight chillers in
parallel based on mixed liquid temperature (intercon-
necting wiring by others). Only one of following op-
tions can be offered on a unit at a time:
• BAS
• Remote Control Panel
or
• Multi-unit Sequence Control) (Factory-Mount-
ed)
Compressor, Piping, Evaporator Options
Low Temperature Brine
Required for brine chilling below 30 °F (-1 °C) leaving
brine temperature for YCAL0019 through YCAL0066
models. Option includes resized thermal expansion
valve (Factory-Mounted).
Chicago Code Relief Valves
Unit will be provided with relief valves to meet Chi-
cago code requirements (Factory-Mounted).
Service Isolation Valve
Service suction and discharge (ball type) isolation
valves are added to unit per system. This option also
includes a system high pressure relief valve in compli-
ance with ASHRAE 15 (Factory-Mounted).
Hot Gas By-Pass
Permits continuous, stable operation at capacities be-
low the minimum step of compressor unloading to as
low as 5% capacity (depending on both the unit and
operating conditions) by introducing an artificial load
on the cooler. Hot gas by-pass is installed on only re-
frigerant system #1 on two-circuited units (Factory-
Mounted).
Heat Exchanger 300 PSIG (21 BARG) DWP
Waterside
The waterside will be of 300 PSIG (21 barg) instead
of the standard 150 PSIG DWP. Included on the Heat
Exchanger nozzles are 300 PSIG R.F. flanges. (Fac-
tory-Mounted). The companion flanges will be field-
supplied by others.
Flanges (ANSI/AWWA C-606 Couplings Type)
Consists of two (2) Flange adapters for grooved end
pipe (standard 150 psi [10.5 barg] cooler).
Flow Switch
The flow switch or its equivalent must be furnished
with each unit. A description of the standard and op-
tional flow switch is as follows:
150 PSIG (10.5 BARG) DWP
For standard units. Johnson Controls model F61MG-
1C Vapor-proof SPDT, NEMA 4X switch (150 PSIG
[10.5 barg] DWP), -20 °F to 250 °F (-29 °C to 121 °C),
with 1" NPT connection for upright mounting in hori-
zontal pipe (Field-Mounted).
300 PSIG (21 BARG) DWP
For units with optional 300 PSIG (21 barg) DX cool-
er. McDonnell and Miller model FS74W Vapor-proof
SPDT, NEMA 4X switch (300 PSIG (21 barg) DWP),
-20 °F to 300 °F (-29 °C to 149 °C), with 1¼ inch MPT
connection for upright mounting in horizontal pipe
(Field-Mounted).
Differential Pressure Switch
Alternatives to an above mentioned flow switch are:
Pretempco model DPS300AP40PF-82582-5 (300
psi max. (21 barg) working pressure), SPDT 5 amp
125/250VAC switch, Range 3 to 45 PSIG (0.2 to 3
barg), deadband 0.5 to 0.8 psi (0.003 to 0.005 barg) ,
with 1/4" NPTE Pressure Connections.
Condenser And Cabinet Options
Condenser coil protection against corrosive environ-
ments is available by choosing any of the following
options. For additional application recommendations,
refer to FORM 150.12-ES1 (Factory-Mounted).
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