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[ARI 440] [UL 883] with [ARI] [UL] seal, factory-fabricated. Provide
[discharge] and [return-air] grilles, [tamperproof front panels] [,
subbases] [, replaceable filters] [, unit levelers] [, grease or
oil-lubricated motor bearings with minimum average life of 200,000 hours at
the design operating conditions,] and vibration isolators. Conform with
requirements below.
2.5.1
Coils
[Single] [and] [water] [steam] [electric].
2.5.2
Style
[Vertical] [Horizontal].
2.5.3
Controls
[Pneumatic] [or] [Electric] type as indicated.
2.5.3.1
Fans
[Manual with fan-speed switch] [Automatic with [selected speed-to-off]
[high-to-low on cooling and low-to-off on heating] fan-cycled type.]
[Construct fan wheels and scrolls of galvanized steel.]
2.5.3.2
Valves
[Two-way] [Three-way] [manual] [automatic [two-position] [modulating]]
valves. Valves shall be [unit-mounted] [wall-mounted].
2.5.3.3
Summer-Winter Switches
[Manual] [or] [Automatic].
2.5.3.4
Air Dampers
[Manual] [or] [Automatic], [Nominal 0-25 percent outdoor air] [or] [Nominal
0-25 percent two-position outdoor air] [or] [0-100 percent modulating
proportional outdoor air] dampers.
2.5.4
Unit Enclosures
[Exposed] [Recessed] [Semi-recessed], [suitable for duct connections as
indicated].
2.5.5
Mounting
[Floor (free standing)] [Ceiling] [or] [Wall-mounted].
2.5.6
Sound Power Level (Reference; 10 to the Power of -12 Watts)
ANSI S12.33 maximum 54 dB.
2.6
ROOM AIR-INDUCTION UNITS
ARI 445, factory-made and assembled, complete with enclosure, primary air
plenum, water coil assembly, drain pan, filter or lint screen,
SECTION 15720N
Page 20
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