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HDWA-SVX002C-EN
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 “Factory-applied Insulation,” p. 34 (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.
Note: 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.
Important: Do NOT insulate the compressor, motor
housing, unit wiring, or sensor modules.
Table 14. 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.
NOTICE
Insulation Damage!
Failure to follow these instructions could result in
insulation damage.
To prevent damage to factory installed insulation:
• Do not allow the insulation to be exposed to
excessive sunlight. Store indoors or cover with
canvas to prevent exposure.
• Do not use thinners and solvents or other types of
paint. Use only water base latex.
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