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255027-YTG-B-0507
Unitary Products Group 7
Roof curbs are designed to fit inside the base rails of the
unit and include both a wood nailing strip and duct
hanger supports.
• POWER EXHAUST - Our single input economizer
options are available with power exhaust. Whenever the
outdoor air intake dampers are opened for free cooling,
the exhaust fan will be energized to prevent the condi-
tioned space from being over-pressurized during econo-
mizer operation.
The power exhaust option can only be used on bot-
tom duct configurations.
• BAROMETRIC RELIEF DAMPER - This damper acces-
sory can be used to relieve internal building air pressure
on units with an economizer without power exhaust. This
accessory includes a rain hood, a bird screen and a fully
assembled damper. With bottom duct connections, the
damper should be mounted over the opening in the
return air panel. With horizontal ductwork, the accessory
should be mounted on the return air duct.
• ENTHALPY ACCESSORY CONTROL KIT - This kit
contains the required components to convert a single
enthalpy economizer to dual enthalpy.
• BURGLAR BARS - Mount in the supply and return
openings to prevent entry into the duct work.
• CO
2
SENSOR - Senses CO
2
levels and automatically
overrides the economizer when levels rise above the
present limits.
• COIL GUARD - Customers can purchase a coil guard kit
to protect the condenser coil from damage. This is not a
hail guard kit.
• HAIL GUARD - Hail guard is available to protect the unit
from hail damage. This is a sloped hood that fits above
the coil.
TABLE 1: SOUND POWER RATING
1
UNIT
SIZE
CFM
ESP BLOWER
SOUND POWER (db 10
-12
Watts)
Octave Band Centerline Frequency (Hz)
SWL
dB(A)
dB(A)
@
10Ft.
2
IWG SPEED KW 63 125 250 500 1,000 2,000 4,000 8,000
036 1,200 0.6 - 0.60 84 84 74 67 69 62 57 52 74 41
048 1,6000.55-0.8085857568706358537542
060 2,0000.45-1.0086867669716459547643
072 2,2000.30-1.3587877770726560557744
1. These values have been accessed using a model of sound propagation from a point source into the hemispheric\free field. The
dBA values provided are to be used for reference only. Calculation of dBA values cover matters of system design and the fan
manufacture has no way of knowing the details of each system. This constitutes and expectation to any specification or guaran-
tee requiring a dBA value or sound data in any other form than sound power level ratings.
2. At a distance of 10 feet from the blower.
TABLE 2: CAPACITY RATING
MODEL
COOLING PERFORMANCE HEATING PERFORMANCE
NOMINAL
CFM
SOUND
RATING
(Db)
1
MBH
EER
2
SEER
3
47 °F 17 °F
HSPF
4
MBH
COP
5
MBH
COP
5
036
6
35.0 11.6 13.30 32.2 3.20 17.6 2.10 7.85 1200 84
048
6
46.5 11.1 13.15 44.0 3.40 23.2 2.10 7.75 1600 83
060
6
55.0 11.2 13.55 52.0 3.25 29.2 2.15 7.75 2000 81
072
7
68.0 10.2 - 69 3.20 43.0 2.20 - 2400 84
1. Rated in accordance with ARI Standard 270.
2. EER = Energy Efficiency Ratio at full load - the ratio (expressed in Btuh/Watt) of the cooling capacity and total power.
3. SEER = Seasonal Energy Efficiency Ratio.
4. HSPF = Heating Seasonal Performance Factor. Based on Region IV minimum design heating requirement.
5. COP = Coefficient of Performance
6. Cooling and heating performance rated in accordance with ARI 210/240.
7. Cooling and heating performance rated in accordance with ARI 340/360.