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Constant Output Fan Filter Units Automatically Adjust to Maintain Airflow.

Constant Output Fan Filter Units
Features:

• A local potentiometer to set desired airflow.
• Digital speed display.
• An electronically commutative motor that is programmed to increase the speed as the load increases to maintain a constant airflow.
• Low power consumption.

Constant Output Fan Filter Units include a 99.99% efficient HEPA filter, 30% ASHRAE pleated type prefilter and seismic clip suspension points. Final filters are protected with a white epoxy diamond pattern grille and are tested according to accepted procedures as described by the Institute of Environmental Sciences (IEST) and/or ISO standards. The standard HEPA filter is 99.99% eff. and an ULPA grade 99.9995% eff. filter is available as an option.

Constant Output Pharmaceutical-style units feature a gel channel on the upstream side of the final filter which provides a leak-free seal between the filter and the housing. The housings are fabricated from steel with a white powdercoat finish. The motor blower is a 1/3 HP motor with a forward curved blower. Units are available in 115V (60 Hz), and 277V (60 Hz).

A polystyrene eggcrate grille in an anodized aluminum frame is hinged to open, permitting removal of the filter without removing the unit from the ceiling (Pharmaceutical-style units only). Optional perforated stainless steel or aluminum grilles are available.

Available options include: Duct collars, power cord, ULPA filtration, stainless construction, and the Fan Filter Unit Control System.

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Specifications: Constant Output Fan Filter Unit Db Performance

• GS Style Filter Data: The HEPA Filter is designed for 90 FPM average face velocity @ initial 0.47 w.g. and has a rated efficiency of 99.99% @ 0.3 micron or larger. An anodized aluminum frame holds the 53mm media which is protected by a diamond pattern white epoxy coated steel grille. Final filters are replaceable from roomside.
• NCR Style Filter Data: The HEPA Filters are designed for 90 FPM average face velocity @ initial 0.47 w.g. and have a rated efficiency of 99.99% @ 0.3 micron or larger. An anodized aluminum frame holds the 53mm media which is protected by a diamond pattern white epoxy coated steel grille. Final filters can be replaced by removing unit from ceiling, placing on a bench, removing and replacing the filter and re-installing the unit in the ceiling.
• Access Port (GS Style Only): This port is located in the center of the filter element face and is used for introducing an upstream challenge or measuring static pressure.
• Air Flow: Designed for 90 FPM +/- 20%. At 90 FPM the CFM is 630 for the NCR style and 520 for the GS style.
• Sound Level: At 90 FPM with a clean unloaded HEPA filter and zero e.s.p. the sound level is 50-53 dBa.

Ordering Information
Product Code
Model
Style
Size
Voltage
Motor
HEPA Filter
12333
SAM 24 MS ECM NCR
NCR
2' x 4'
115
ECM
302090
12335
SAM 24 MS ECM NCR
NCR
2' x 4'
277
ECM
302090
12336
SAM 24 MS ECM GS
Pharmaceutical-Style
2' x 4'
115
ECM
302200
12338
SAM 24 MS ECM GS
Pharmaceutical-Style
2' x 4'
277
ECM
302200