HDWA-SVX001D-EN
33
Insulation
Unit Insulation Requirements
Factory-installed insulation is available as an option for
all units. Factory installation does NOT include
insulation of the chiller feet. In applications where the
chiller is not factory-insulated, install insulation over all
surfaces shown in the figure in
(i.e., compressor, condenser,
economizer, and drive [not shown]).
The quantity of insulation required is listed in the
following table. Insulation thickness is determined at
normal design conditions which are:
•
Standard comfort-cooling leaving chilled water
temperature
•
85°F (29.4°C) dry bulb ambient temperature
•
75 percent relative humidity
Operation outside of normal design conditions as
defined in this section may require additional
insulation; contact Trane for further review.
N
No
otte
e:: If the unit is not factory-insulated, install
insulation around the evaporator bulbwells and
ensure that the bulbwells and connections for
the waterbox drains and vents are still accessible
after insulation is applied. The sensor modules
(Low Level Intelligent Devices [LLIDs]) and
interconnecting four-wire cable inter-processor
communication (IPC) bus must be raised up
above the field-installed insulation. Secure the
IPC bus to the insulation top/outer surface after
insulation is completed.
IIm
mp
po
orrtta
an
ntt:: Do NOT insulate the compressor, motor
housing, unit wiring, or sensor modules.
Table 11.
Agility chiller insulation requirements
Location
3/4 in. (19.05 mm)
Insulation,
Square Feet (Square
Meters)
020A Evaporator, suction elbow,
pipe
105 (9.8)
040A Evaporator, suction elbow,
pipe
120 (11.1)
Insulation Thickness
Requirements
Factory-applied Insulation
All low-temperature surfaces are covered with 3/4 in.
(19.05 mm) Armaflex
®
II or equal.
The insulation is Armaflex
®
or equivalent closed cell
elastomeric insulation to prevent the formation of
condensation . Chillers in high humidity areas or ice
storage, low leaving water temperature (less than 36°F
[2.2°C] chilled water temperature/glycol) units, may
require double thickness to prevent formation of
condensation.
N
NO
OT
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