minimizes conflict with other systems competing for ceiling space. The FlowStar sensor ensures accurate control, even when space constraints do not permit long straight inlet duct runs to the terminal. 

Sizes

Model VFL terminals are available with primary air valves handling up to 3000 CFM. Three fan sizes provide a range of heating capacities between 100 and 1500 CFM. Units are available with multiple  primary air valve and fan combinations to meet current industry needs.


​STANDARD FEATURES
Construction

  • AHRI 880 certified and labeled
  • 20 gauge galvanized steel casing
  • 1/2" thick fiberglass insulation
  • Large top and bottom access openings allowing removal of complete fan assembly for all heating coil options

Fan Assembly

  • Forward curved, dynamically balanced, direct drive, galvanized blower wheel
  • 115, 208/230 or 277 volt single phase, three tap PSC motor
  • SCR fan speed controller
  • Quick-select motor speed terminal
  • Permanently lubricated motor bearings
  • Thermally protected motor
  • Vibration isolation motor mounts
  • Single point wiring

Primary Air Valve

  • Round inlets: 22 gauge galvanized steel with embossed rigidity rings
  • Rectangular inlets: 18 gauge galvanized steel construction
  • Low thermal conductance damper shaft
  • Position indicator on end of damper shaft
  • Mechanical stops for open and closed position
  • FlowStar™ center averaging airflow sensor
  • Balancing tees
  • Plenum rated sensor tubing

Hot Water Coils

  • Coils are designed, manufactured, and tested by ENVIRO-TEC
  • AHRI 410 certified and labeled
  • 1, 2, 3, or 4 row coils
  • Tested at a minimum of 450 PSIG under water and rated at 300 PSIG working pressure at 200°F
  • Left or right hand connections

Electrical

  • cETL listed for safety compliance
  • NEMA 1 wiring enclosure

Electric Heat

  • cETL listed as an assembly for safety compliance per UL 1995
  • Integral electric heat assembly
  • Automatic reset primary and back-up secondary thermal limits
  • Single point power connection
  • Hinged electrical enclosure door
  • Fusing per NEC


OPTIONAL FEATURES
Construction

  • Foil faced scrim backed insulation
  • Elastomeric closed cell foam insulation
  • Double wall construction with 22 gauge liner
  • 1" filter rack with throwaway filter

Fan Assembly

  • 220/240 volt 50 Hz motors

Electrical

  • Full unit toggle disconnect
  • Inline motor fusing
  • Primary and secondary transformer fusing

Electric Heat

  • Proportional (SSR) heater control
  • Mercury contactors (unit may not be inverted)
  • Door interlocking disconnect switches

Controls

  • Factory provided controls include:

             - Analog electronic
             - Pneumatic

  • Consignment DDC controls (factory mount and wire controls provided by others)

Enviro-Tec 



Model VFR Series C Parallel Flow Fan-Powered VAV Terminals

Locally Owned & Operated

​The standard shallow casing height (14" up to 1000 CFM) minimizes conflict with other systems competing for ceiling space. The FlowStar™ sensor ensures accurate control, even when space constraints do not permit long straight inlet duct runs to the terminal. Sizes. Primary air valves and fans are available in various size combinations to provide fan capacities between 20% and 100% of the selected maximum primary airflow. Model VFR terminals are available with primary valves handling up to 4100 CFM. Six fan sizes provide a range of heating capacities between 50 and 2400 CFM.​


STANDARD FEATURES
Construction

  • AHRI 880 certified and labeled
  • 22 gauge galvanized steel casing and valve
  • 3/4" thick fiberglass insulation
  • Large access openings allowing removal of complete fan assembly for all heating coil options

Fan Assembly

  • Forward curved, dynamically balanced, direct drive, galvanized blower wheel
  • 115 or 277 volt single phase, three tap PSC motor
  • SCR fan speed controller
  • Quick-select motor speed terminal
  • Permanently lubricated motor bearings
  • Thermally protected motor
  • Vibration isolation motor mounts
  • Single point wiring

Primary Air Valve

  • Embossed rigidity rings
  • Low thermal conductance damper shaft
  • Position indicator on end of damper shaft
  • Mechanical stops for open and closed position
  • FlowStar center averaging airflow sensor
  • Balancing tees
  • Plenum rated sensor tubing

Hot Water Coils

  • Designed and manufactured by ENVIRO-TEC
  • AHRI 410 certified and labeled
  • 1, 2, 3, 4 row coils
  • Tested at a minimum of 450 PSIG under water and rated at 300 PSIG working pressure at 200°F

Electrical

  • cETL listed for safety compliance
  • NEMA 1 wiring enclosure
  • lectric Heat
  • cETL listed as an assembly for safety compliance per UL 1995
  • Integral electric heat assembly
  • Automatic reset primary and back-up secondary thermal limits
  • Single point power connection
  • Hinged electrical enclosure door
  • Fusing per NEC


OPTIONAL FEATURES:
Construction

  • 20-gauge, galvanized-steel construction
  • 1" insulation
  • Scrim-reinforced, foil-faced insulation meeting ASTM C1136 for mold, mildew, and humidity resistance
  • Double-wall construction with 22-gauge liner
  • Mounting brackets to accept all threaded hanging rods or wire hangers
  • Low-velocity, low-pressure-drop, filter rack and filters located at induction inlet
  • Hot-water, steam, or electric heating coils

Fan Assemblies

  • 208, 230, 240 and 480-volt, single-phase, PSC motors
  • 220/240-volt, 50 Hz motors

Electrical Components

  • Full-unit, toggle disconnect and inline motor fusing
  • Primary and secondary transformer fusing

Electric Heat

  • Proportional, solid-state-relay (SSR), heater control
  • Mercury contactors
  • Door-interlocking disconnect switches

Controls

  • Factory-provided controls include:

             - Pneumatic controls
             - Analog-electronic controls

  •  Consignment-DDC controls (factory-mount and wire controls provided by others)

Enviro Tec VFR Parallel Fan Powered VAV

The VFR provides flexibility in system design. Reduced noise at the fan terminal allows the system designer to place properly sized units directly above occupied spaces. It is not necessary to use the crowded space above a hall or corridor to locate the equipment. This will reduce lengthy and expensive discharge duct runs. 

Enviro Tec logo

          Steve Lewis LLC dba

Peace of Mind
33 Years of Combined Experience
361-882-2233

Call Us Today for Your Next Project

Lewis Mechanical Sales logo

VFL Parallel Fan-Powered Low-Height VAV Terminals


​The VFL provides flexibility in system design. Reduced noise at the fan terminal allows the system designer to place properly sized units directly above occupied spaces. It is not necessary to use the crowded space above a hall or corridor to locate the equipment. This will reduce lengthy and expensive discharge duct runs. The standard shallow casing  height (10 5/8" or 12") 

Enviro-Tec Parallel Flow Fan Powered VAV

Enviro Tec VFL Parallel Fan Powered Low Height VAV
Enviro Tec logo