Air-Circulating Fans

enter and leave fans axially. Streamline inlet with conversion vanes [and

bell-mouth]. Enclose and isolate fan bearings and drive shafts from air

stream. [Furnish direct-drive TEAC motors.] [Guard V-belt drives of

drip-proof motors mounted out of air stream.] Provide fan supports [and

vibration isolators].

2.1.6

Air-Circulating Fans

**************************************************************************

NOTE: These fans are not allowed when local exhaust

system is used in the room or space.

**************************************************************************

UL 507 and UL listed, propeller ceiling type, with size and electrical

characteristics as indicated.

2.1.7

Air Curtains

AMCA 210 and AMCA 220 with AMCA seal, factory-fabricated, [insect]

[thermal] control type, angle adjustment feature, minimum air velocity [3]

[8] meter per second (m/s) [600] [1,600] feet per minute (fpm), measured at

points one meter 3 feet above the floor, and minimum air capacities and

electrical characteristics.

2.2

CENTRAL STATION AIR HANDLERS

**************************************************************************

NOTE: ARI 210, 240, or 360, unitary air

conditioning equipment with direct expansion coil

are covered by Section 15730, "Unitary Air

Conditioning Equipment." Fan-coil units are covered

in ARI 440. For other exclusions, see ARI 430. In

the industry, the provision of heating and cooling

sections may be added by being rated separately,

with coils per ARI 410, electric heaters per UL

1096, or gas-fired heaters per AGA Z21.47.

**************************************************************************

NOTE: Indicate sound ratings or loudness level of

equipment in the Equipment Schedule on the drawings.

**************************************************************************

ARI 430 with sound rating in accordance with ASHRAE 68, [[single-] [multi-]

zone] [or] [double-deck] type, sound power level, and static pressure, as

indicated. Include damper section, supply blower section, filter section

with mixing box section or combination filter-mixing box section, and

[coil] [or] [heater] section. Filters, housing coils, and heaters must be

completely removable from the unit without having to dismantle the unit or

adjacent equipment.

2.2.1

Casings

Construct casings of steel, galvanized steel, or aluminum on channel base

[and drain pan] coated externally with manufacturers standard paint finish.

Provide removable panels and access doors for inspection and access to

internal parts. Insulate casings with manufacturer's standard materials.

For outdoor roof mounted units, provide weatherproof casing in accordance

with paragraph entitled "Testing for Corrosion Protection." Finish with

SECTION 15720N

Page 12