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Unit Insulation Requirements
Factory-installed insulation is
available as an option for all units.
Below is Table 9 showing unit
insulation requirements for CDHF
units.
In those instances where the chiller
is not factory-insulated, install
insulation over the areas shaded in
Figure 22. It may also be necessary
to insulate the compressor suction
cover if the unit is installed in an area
subject to high humidities. The
quantities of insulation required
based on unit size and insulation
Table 9 - CDHF Unit Insulation Requirements
EVSZ
(Note: 1)
210D
250D
250M
250X
Notes:
1. EVSZ = Evaporator Shell Size,
L = Long Shell, S = Short Shell,
D = Duplex
2. 3/4" sheet insulation is installed on the evaporator, evaporator waterboxes,
suction elbow and suction cover as indicated in Figure 22.
3. 3/8" sheet insulation is installed on all economizers. All liquid lines and
other pipes require the use of 1/2"-wall pipe insulation, or 3/8" sheet
insulation.
CDHF-SVN01B-EN
Insulation
thickness listed is determined at
normal design conditions which are:
- 85°F Dry Bulb Ambient
Temperature
- 75% Relative Humidity
Note: If the unit is not factory-
insulated: Install insulation around
the evaporator bulbwells; and,
ensure that the bulbwells and
connections for the water box drains
and vents are still accessible after
insulation is applied.
Important:
Units with a refrigerant pump do
not need insulation on the motor.
Do not insulate over unit wiring.
Raise the wiring harness and
insulate underneath. Do not insulate
over sensor modules.
3/4" Insulation
(Note: 2)
1270 Sq. Ft.
1308 Sq. Ft.
1410 Sq. Ft.
1500 Sq. Ft.
CAUTION
Insulation Damage!
If the factory-installed insulation will
be painted in the field, use only
water-based latex paints! Thinners
and solvents used in other types of
paints may cause seams in the
insulation to open as a result of
shrinkage. To prevent damage to the
factory-installed insulation, do not
allow excessive exposure to
sunlight.
3/8" Insulation
(Note: 3)
193 Sq. Ft.
258 Sq. Ft.
280 Sq. Ft.
280 Sq. Ft.
41
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