Unit installation

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Spring Air System Enviro Engineering Manual 01/0319
19
Exhaust Fan:
The KES unit shall be supplied with a CLASS II, AMCA rated double width, double inlet, (single
width, single outlet SWSI) airfoil centrifugal fan statically and dynamically balanced. The fan shall
be mounted on a heavy duty turned, ground and polished steel shaft, internally isolated,
(externally isolated with hanging isolators shipped loose for field installation). The bearings shall
be heavy-duty, prelubricated type. V-belt drives shall be two groove, adjustable up to 7.5 HP
motors, sized with a capacity 25% greater than the motor horsepower. The exhaust fan shall be
a ____ Hp, ____V/3/60, TEFC motor.
Controls:
Controls: Indoor Unit
The unit shall have a NEMA-3R disconnect switch and NEMA-1 motor starter and overload
mounted on the KESF fan unit. The motor starter coil is connected to the LV-10 J-Box on the
KES-ISH filter unit.
Controls: Outdoor Unit
The unit shall have a NEMA-4 disconnect switch, The LV10 J-Box, motor starter and overload
and pressure switches shall be located in a weatherproof enclosure mounted on the KESF fan
unit. When the odor spray option is selected this enclosure will have a 300-watt baseboard
heater and thermostat in cold climates. The unit shall include a firestat. The LV10 J-BOX shall
be interconnected to a RPD10 or RPD10A or RPW10 remote panel.
Odor Spray Option:
The Spring Air odor spray system shall include a reverse spray nozzle located upstream of the
fan, air compressor unit, one gallons of Spring Fresh spray solution and associated piping. The
odor spray package can be located on the KESF fan section or remote in the discharge duct from
the KESF fan section. The remote control panel shall include a cycle timer and spray timer.
Odor Pellet Option:
The unit shall include an odor removal section. The odor media shall consist of 2" perforated cells
filled with activated alumina pellets impregnated with potassium permanganate. The odor system
shall provide odor removal continuously during exhaust fan operation. The odor is controlled
through a combination of sorption and the chemical modification of the gaseous contaminants.
The odor media shall be non-flammable and non-toxic. The odor pellet package is normally
located between the KES-ISH filter and KESF fan section.
Mechanical Services:
All exhaust ductwork from the filter box to the KESF fan inlet shall be supplied and installed in
accordance to standard HVAC construction.