JOHNSON CONTROLS
FORM 160.75-EG1 (519)
36
Accessories and Modifications (Cont'd)
FACTORY INSULATION OF EVAPORATOR
Factory-applied thermal insulation of the flexible, closed-cell plastic type, 3/4" (19 mm)
thick is attached with vapor-proof cement to the evaporator shell, flow chamber, tube
sheets, suction connection, and (as necessary) to the auxiliary tubing. Not included is
the insulation of compact waterboxes and nozzles. This insulation will normally prevent
condensation in environments with relative humidifies up to 75% and dry bulb tempera-
tures ranging from 50°F to 90°F (10°C to 32.2°C). 1 1/2" (38 mm) thick insulation is also
available for relative humidifies up to 90% and dry bulb temperatures ranging from 50°F
to 90°F (10°C to 32.2°C).
WATER FLANGES
Four 150 lb. ANSI raised-face flanges for condenser and evaporator water connections
are factory-welded to water nozzles. Companion flanges, bolts, nuts and gaskets are not
included.
SPRING ISOLATION MOUNTING
Spring isolation mounting is available instead of standard isolation mounting pads when
desired. Four level-adjusting, spring-type vibration isolator assemblies with non-skid pads
are provided for field-installation. Isolators are designed for one-inch (25 mm) deflection.
WATERBOXES
Marine Waterboxes – Marine waterboxes allow service access for cleaning of the heat
exchanger tubes without the need to break the water piping. Bolted-on covers are ar-
ranged for convenient access. ANSI/AWWA C-606 nozzle connections are standard;
flanges are optional. Marine waterboxes are available for condenser and/or evaporator.
Hinged Waterboxes – Hinged waterboxes allow fast and safe service access for clean-
ing heat exchanger tubes. Hinged waterboxes on a non-nozzle end give access to the
tubes without having to disconnect the water piping. Hinged waterboxes are available for
condenser and/or evaporator for compact and marine waterboxes.
KNOCK-DOWN SHIPMENT
The chiller can be shipped knocked down into major subassemblies (evaporator, con-
denser, driveline, etc.) as required to rig into tight spaces. This is particularly convenient
for existing buildings where equipment room access does not allow rigging a factory-
packaged chiller.
REFRIGERANT ISOLATION VALVES
Optional factory-installed isolation valves in the compressor discharge line and refrigerant
liquid line are available. This allows isolation and storage of the refrigerant charge in the
chiller condenser during servicing, eliminating time-consuming transfers to remote stor-
age vessels. Both valves are positive shut-off, assuring integrity of the storage system.
To Next Page
Loading...
