STANDARD EQUIPMENT (All Models)

General :

Either of two horizontal blower arrangements are available as standard: HR-1, horizontal discharge and HR-2, down discharge, as illustrated below.

Cabinet :

Bolted construction of aluminized steel; SB-112/115 of 18 gauge, SBD-215/218 of 16 gauge, SBD-222/227/233 with 16 gauge sides and 14 gauge top, and SBD-240 with 14 gauge cabinet. Access panels are provided o allow easy access to motors, drives and filters (if ordered). Outside surface is primed with zinc-chromate and finished with a coat of enamel.

Blower :

Centrifugal forward curved, double width, double inlet, class 1 fan(s) with solid turned ground shaft and self-aligning, greaseable ball bearings. All blower wheels are statically and dynamically balanced.

Blower housings, bearings and adjustable motor base are mounted on a reinforced frame to insure rigidity and quiet operation. Adjustable drives are standard through 10 HP, fixed drives with 15 HP and larger motors. V-belt drives are sized for 135% of motor horsepower.

SB-240 will have twin fan set with center coupling - twin city 39" FL (std. fans).

Fan motors and drives are mounted within the blower cabinet. This affords motor protection and eliminates the operation hazard of V-belt drives external to the unit.

Filters :

Filter section with "V" or "Z" frames.

Motor :

T-frame, open drip-proof, 1800 RPM prelubricated ball bearing type for all standard voltages.

Electric Controls :

• Motor starter.
• Control transformer
• Freezestat (s).
• NEMA 1 master control panel.
• Remote control station with system switches and indicating lights.
• All controls, dampers and motors as shown with each system sequence on pages 2 and 3 of this bulletin.

Note
Valves, valve motors and linkage, room thermostats, potentiometers and remote control stations are shipped for field piping and/or mounting and wiring.

Coils :

Fabricated of heavy gauge copper tubes, staggered on 1½" centers, mechanically bonded to energy efficient plate type aluminum fins. Headers are constructed of heavy seamless copper tubing and coil casings of double flanged galvanized steel. All coils tested leak free at 315 PSIG air pressure under water. Steam systems furnished with steam distributing coils having free floating cores and pitched in casing to ensure condensate drainage.