JOHNSON CONTROLS
8
Accessories and Options
(Continued)
.
BUILDING AUTOMATION SYSTEM INTERFACE:
• Chiller to accept 4 to 20mA or 0 to 10 VDC input to
reset the leaving chilled liquid temperature. (
Factory
Mounted
)
MULTI-UNIT SEQUENCE CONTROL:
Separate sequencing control center provided to permit
control of up to eight chillers in parallel based of mixed
liquid temperature (interconnecting wiring by others).
(
Field Mounted
)
VIBRATION ISOLATION:
• Neoprene Isolation
– Recommended for normal in-
stallations. Provides very good performance in most
applications for the least cost. (
Field mounted
)
• 1” Spring Isolators
– Level adjustable, spring and
cage type isolators for mounting under the unit base
rails. 1” nominal deflection may vary slightly by appli-
cation. (
Field mounted
)
• 2” Seismic Spring Isolators
– Restrained Spring-Flex
Mountings incorporate a rugged welded steel hous
-
ing with vertical and horizontal limit stops. Housings
designed to withstand a minimum 1.0g accelerated
force in all directions to 2” (51mm). Level adjustable,
deflection may vary slightly by application. (
Field
mounted
)
BUY AMERICAN ACT COMPLIANCE
- In keeping with
the “Buy America Act”, products will be comprised of 50%
or more U.S. content and manufactured (final assembly)
in the U.S.A.
SERVICE ISOLATION VALVE
– Service suction isola-
tion added to unit for each refrigerant circuit. (
Factory
Mounted
)
CHICAGO CODE RELIEF VALVE -
Special relief valves
per Chicago code. (
Factory Mounted
)
PRESSURE RELIEF (CE/PED) SERVICE VALVE KIT
-
Each relief valve is mounted on a sealable ball valve to
aid maintenance. (
Factory Mounted
)
cooler, etc.), yet provides free air flow. This can cut
installation cost by eliminating the need for separate,
expensive fencing. (
Factory mounted
)
• Louvered Panels (condenser coils only)
– Painted
steel to match unit panels, louvered panels are
mounted over the exterior condenser coil faces on the
sides of the unit to visually screen and protect coils.
(
Factory mounted
)
• Louvered Panels (full unit)
– Painted steel to match
unit panels, to protect condenser coils from incidental
damage, visually screen internal components, and
prevent unauthorized access to internal components.
(
Factory mounted
)
• Louvered (Condensers)/Wire Panels (Mechanical)
– Louvered steel panels on external condenser coil
faces, painted to match unit panels. Heavy gauge,
welded wire-mesh, coated to resist corrosion, around
base of machine to restrict unauthorized access. (
Fac-
tory Mounted
)
EVAPORATOR OPTIONS:
•
1-1/2” Insulation
– Double thickness insulation pro
-
vided. (
Factory Mounted
)
•
Raised Face Flange Accessory
for cooler nozzles:
♦ 150 PSIG (10.3 bar), welded flanges (field kit,
matching pipe flange by contractor).
♦ 150 PSIG (10.3 bar) companion weld flanges. (field
kit - Not available with 460V units).
♦ 150 PSIG (10.3 bar),
ANSI/AWWA C-606 COU-
PLINGS (field kit, matching pipe flange by contrac
-
tor).
• Opposite Handed evaporator water connections
for ease of installation. Standard water connections
are on the left-hand side of the unit, when viewed from
the control panel end.
FLOW SWITCH ACCESSORY :
Vapor proof SPDT, NEMA
3R switch, 150 PSIG (10.3 bar) DWP, 20°F to 250°F
(-28.9°C to 121.1°C) with 1” NPT (IPS) connection for
upright mounting in horizontal pipe (This flow switch or
equivalent must be furnished with each unit). (
Field
Mounted
).
DIFFERENTIAL PRESSURE SWITCH -
Alternative to the
paddle-type flow switch. 3-45 PSIG (0.2-3 bar) range with
1/4" NPTE pressure connections. (
Field Mounted
)
Summary of Contents for UL R134A
Page 115: ...JOHNSON CONTROLS FORM 201 23 EG1 1007 115 INTENTIONALLY LEFT BLANK...
Page 127: ...JOHNSON CONTROLS FORM 201 23 EG1 1007 127 INTENTIONALLY LEFT BLANK...
Page 128: ...JOHNSON CONTROLS 128 Typical Control Wiring Two Compressor...
Page 130: ...JOHNSON CONTROLS 130 Typical Control Wiring Three Compressor...
Page 138: ...JOHNSON CONTROLS 138...
Page 139: ...JOHNSON CONTROLS FORM 201 23 EG1 1007 139...
Page 140: ...Form 201 23 EG1 1007 Supersedes 201 23 EG1 607 File in ET2...
