Installation Mechanical
RTHD-SVX02H-EN 61
Thermal Insulation
All RTHD units are available with optional factory in-
stalled thermal insulation. If the unit is not factory insu-
lated, install insulation over the areas shaded in Figure
29. Refer to Table 15 for types and quantities of insulation
required.
Insulation thickness is determined at normal design con-
ditions which are:
• Standrad comfort-cooling leaving chilled water tem-
perature
• 85ºF Dry bulb ambient temperature
• 75% Relative humidity
Operation outside of normal design conditions as de-
fined above may require additional insulation; contact
Trane for further review.
Note: Liquid line filter, refrigerant charging valves, wa-
ter temperature sensors, drain and vent connec-
tions when insulated must remain accessible for
service.
Note: Use only water-base latex paint on factory-applied
insulation. Failure to do so may result in insula-
tion shrinkage.
Note: Units in environments with higher humidity or
very low leaving water temperature may require
thicker insulation
Figure 29. Typical RTHD Insulation Requirements
Table 15. Recommended Insulation Types
Location Type Sq. Feet
Evaporator 3/4” wall 90
Compressor 3/4” wall 25
All components and piping on low side
of system (gas pump, return oil line,
lter from pump)
3/4” wall 160
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