AirTech 3AL - Page 9

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3AL2251 1.4/5.5
3AL2281 1.7/6.3
3AL2341 1.85/7
3AL2430 1.85/7
4.4 The 3AL is an air cooled unit and therefore sufficient space as noted in this
table must be allowed around the unit to ensure adequate air flow for cooling and
proper operation. Front refers to the air inlet through the heat exchanger; back
refers to the air outlet through the perforated metal grid and side refers to any
other side of the unit.
Model Front
ft/m
Back
ft/m
Side
ft/m
3AL2041 1.3/0.4 1.3/0.4 1/0.3
3AL2061 1.3/0.4 1.3/0.4 1/0.3
3AL2101 1.3/0.4 1.3/0.4 1/0.3
3AL2241 1.3/0.4 1.3/0.4 1/0.3
3AL2251 1.3/0.4 1.3/0.4 1/0.3
3AL2281 1.3/0.4 1.3/0.4 1/0.3
3AL2341 1.3/0.4 1.3/0.4 1/0.3
3AL2430 1.3/0.4 1.3/0.4 1/0.3
4.5 Approximate noise level of the 3AL unit is described below for a system with
the inlet and outlet piped to a remote location and corrected for local conditions
to a free field value. Measurement is taken at 3 feet (1 meter) from any surface
of the unit. Readings are taken at 60 Hz operation, units operating at 50 Hz will
be approximately 3 dBA less in all cases.
Model Sound Pressure Level
(dBA) maximum
3AL2041 66
3AL2061 70
3AL2101 74
3AL2241 74
3AL2251 71
3AL2281 73
3AL2341 76
3AL2430 76
4.6 Electrical rating of the units is noted on a data plate located on the front of the
unit.