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(13-07) Non Tempered (Neither heated or cooled) Make-Up Air - Low Cost Make Up Air - (5,000 - 30,000 CFM)
LEV-CO’s Non-Tempered Air Make-Up Systems replaces exhausted air more efficiently and with more comfort than conventional Air Make-Up air systems. Ideal for production facilities that generate heat, for example welding shops where welding processes generate up to 450,000 BTU per hour per welder.
Non-Tempered units are grouped into 2 different types:
  • 100% Outdoor Air: These units draw outside air and consist of a simple Axial fan, motorized inlet damper, Insulated cabinet and flow straightener.
  • Modulating units – 0-100% Outdoor air: these units draw a variable amount of outside air from outside and when the internal temperature drops below the customer’s set point (EG: 70 degrees F) the THERMOSTAT controlled modulating air-mixing system allows air to be drawn from OUTSIDE or INSIDE in order to maintain desired indoor temperature. This solution is most often selected when the production level cannot be guaranteed or additional heat sources are not available.
    Both solutions are aided by custom engineered flame retardant fabric distribution ducting, where we able to take advantage of the STRATIFIED heat in ceiling, creating the equivalent of lowering a conventional thermostat by ½ degree F per foot of ceiling height or provide MAKE-UP without additional heat.
    This is accomplished by discharging the air in HIGH velocity air jets as close to the ceiling as possible. The result of the mixing is that the fresh air is heated to room temperature very quickly before it reaches the lower occupied area. This is extremely effective in welding shops where each welder can generate as much as 450,000 BTU per hour in heat.
    This “De-Stratifying” air distribution method has the added benefit of diluting and cooling any “Fugitive emissions/smoke” in the ceiling space and allows this air to be drawn down to floor level where it can be filtered and or exhausted by local exhaust ventilation systems.
    When no fresh air is needed, the system can be shut down and the outside air dampers will close automatically or the system can be run on one hundred percent (100%) re-circulated air.
    Conversely, if cooling air is required, “Bi-Flex” ducting can be selected (Optional). Bi-Flex ducting allows the air to continue to be exhausted into the ceiling space in the winter months AND then be re-directed downwards to the workers in summer months. This method leaves the bulk of the hot air in the ceiling space and places high velocity cooling air towards the worker. (The velocity shall not be high enough to disturb welding gases/processes).
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    Non-Modulating MUA Units (Not-Fired)
    Part # Qty  Description
    MJET-24-JSNM 5,000 CFM @ 1.3" SP Unfired, Non-Modulating MUA unit, 3 HP TEFC Motor. Unit comes c/w motorized dampers and flow straightener
    MJET-30-JSNM Air Make-up System - Non-Modulation
    MJET-36-JSNM Air Make-up System - Non-Modulation
    MJET-42-JSNM Air Make-up System - Non-Modulation
    MJET-48-JSNM Air Make-up System - Non-Modulation
    MJET-54-JSNM Air Make-up System - Non-Modulation: - Jet Stream unit (Non Modulating), insulated cabinet, 36,000 CFM, .5 Static Pressure, 7.5hp motor, controls
    MJET-60-JSNM Air Make-up System - Non-Modulation
    Modulatind MUA Units (Non-Fired)
    Part # Qty  Description
    MJET-24-JSAM 5000 CFM @ 1.3" SP Unfired MUA unit w/ Recirculation 3 HP TEFC Motor. Unit comes c/w motorized dampers, temperature control, insulated cabinet and flow straightener
    MJET-30-JSAM 10,000 CFM @ 1.3" SP Unfired MUA unit w/ Recirculation 5 HP TEFC Motor. Unit comes c/w motorized dampers, temperature control, insulated cabinet and flow straightener
    MJET-36-JSAM 15,000 CFM @ 1.3" SP Unfired MUA unit w/ Recirculation 7.5 HP TEFC Motor. Unit comes c/w motorized dampers, temperature control, insulated cabinet and flow straightener
    MJET-42-JSAM 20,000 CFM @ 1.3" SP Unfired MUA unit w/ Recirculation 7.5 HP TEFC Motor. Unit comes c/w motorized dampers, temperature control, insulated cabinet and flow straightener
    MJET-48-JSAM 25,000 CFM @ 1.3" SP Unfired MUA unit w/ Recirculation 10 HP TEFC Motor. Unit comes c/w motorized dampers, temperature control, insulated cabinet and flow straightener
    MJET-54-JSAM-1 30,000 CFM @ 1.3" SP Unfired MUA unit w/ Recirculation 3 HP TEFC Motor. Unit comes c/w motorized dampers, temperature control, insulated cabinet and flow straightener
    MJET-54-JSAM-2 37,000 CFM @ 1.3" SP Unfired MUA unit w/ Recirculation 20 HP TEFC Motor. Unit comes c/w motorized dampers, temperature control, insulated cabinet and flow straightener
    MJET-60-JSAM-1 40,000 CFM @ 1.3" SP Unfired MUA unit w/ Recirculation 20 HP TEFC Motor. Unit comes c/w motorized dampers, temperature control, insulated cabinet and flow straightener
    MJET-60-JSAM-2 50,000 CFM @ 1.3" SP Unfired MUA unit w/ Recirculation 25 HP TEFC Motor. Unit comes c/w motorized dampers, temperature control, insulated cabinet and flow straightener
    Automatic Motor Starter
    Part # Qty  Description
    P-025-24S-230V-1PH-0.5HP Energy Saver E- Man© 230V/1/60. Fan Motor control station for 0.5 HP. Permits automatic start-stop of the fan from the extractor arm hood, hose reel or other device with Remote Switch. Remote mounted switches must be ordered separately (EG: LS-12 - Hood mounted Switch, MS-12 Hose reels...). Comes complete with relevant Motor overload. Also includes a 50 VA 24V AC transformer for powering devices such as halogen Lights.
    P-025-24S-460V-3PH-20HP Energy Saver E- Man© 460V/3/60. Fan Motor control station. Rated up to 20 HP. Permits automatic start-stop of the fan from the extractor arm hood, hose reel or other device with Remote Switch. Remote mounted switches must be ordered separately (EG: LS-12 - Hood mounted Switch, MS-12 Hose reels...). Comes complete with relevant Motor overload. Please specify Motor HP when ordering ______. Also includes a 50 VA 24V AC transformer for powering devices such as halogen Lights.
    P-025-24S-575V-3PH-20HP Energy Saver E- Man© 575V/3/60. Fan Motor control station. Rated up to 20 HP. Permits automatic start-stop of the fan from the extractor arm hood, hose reel or other device with Remote Switch. Remote mounted switches must be ordered separately (EG: LS-12 - Hood mounted Switch, MS-12 Hose reels...). Comes complete with relevant Motor overload. Also includes a 50 VA 24V AC transformer for powering devices such as halogen Lights.
    Fabric Ducting
    Part # Qty  Description
    MJET-24-FDCT Fabric Duct with custom hole pattern
    MJET-30-FDCT Fabric Duct with custom hole pattern, 30"
    MJET-36-FDCT Fabric Duct with custom hole pattern
    MJET-42-FDCT Fabric Duct with custom hole pattern
  • Complete with all Hardware and cable (NB: Cable to be 10% longer than fabric duct)
  • MJET-48-FDCT Fabric Duct with custom hole pattern
    MJET-54-FDCT Fabric Duct with custom hole pattern
    MJET-60-FDCT Fabric Duct with custom hole pattern
    Misc. Options
    Part # Qty  Description
    1000-D-AD Charcoal adsorber option: Includes 2 polyester prefilter, 95% short bag filter (18 sq.ft.), refillable, v-bank absorber module (20 lbs. capacity) and 2 pleated after-filter, rated at 600 cfm. Order charcoal separately. (Adds 15 lbs. to ship weight).
    FD-44-45 ELBOW 44" dia. 45 degree elbow (1.5xR), 20 ga. galvanized sheet metal.
    FD-44-90 ELBOW 44" dia. 90 degree elbow (1.5xR), 20 ga. galvanized sheet metal.
    FD-44-CABLE Cable for 44" dia. fabric duct. Price per foot.
    FD-44-CABLE-KIT Cable kit. At least 2 kits/section needed.
    FD-44-HA Hardware Accessories for 44" dia. fabric ducting. Price per foot.
    FD-44-SR-TRANS Transition from 44"x44" square to 44" dia; 20 ga. galvanized steel
    MUA Units Wall Hoods
    Part # Qty  Description
    MJET-24-WHOOD Wall mounted weather hood
    MJET-30-WHOOD Wall mounted weather hood
    MJET-36-WHOOD Wall mounted weather hood
    MJET-42-WHOOD Wall mounted weather hood
    MJET-48-WHOOD Wall mounted weather hood
    MJET-54-WHOOD Wall mounted weather hood
    MJET-60-WHOOD Wall mounted weather hood
    Energy Saving Options (Automatic Dampers, Timers, VFD's...)
    Part # Qty  Description
    P-025-24S-230V-3PH-7.5 HP Energy Saver E- Man© 230V/3/60. Fan Motor control station for 7.5 HP. Permits automatic start-stop of the fan from the extractor arm hood, hose reel or other device with Remote Switch. Remote mounted switches must be ordered separately (EG: LS-12 - Hood mounted Switch, MS-12 Hose reels...). Comes complete with relevant Motor overload. Also includes a 50 VA 24V AC transformer for powering devices such as halogen Lights.
    Preventative Maintenance Pressure Gauges, etc. (when ordering main unit)
    Part # Qty  Description
    PG-10 Pressure Gauge - complete with Wall, Ceiling or table mounting bracket and 0-10 pressure gauge. 3/16 inside diameter tubing ordered separately.