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Belt Drive Fan Coils
600 to 4,000 CFM

42BH - Horizontal
42BV - Vertical

The 42B belt drive fan coil units provide year-round comfort air conditioning with central station operating economy. The 42B units are designed for high-static, ducted applications, using furred-in, horizontal and vertical models.
Performance Features
  • Airflow capacities from 600 to 4000 cfm
  • Outside air capability with mixing box (field-installed accessory)
  • 2-pipe or 4-pipe system combinations (factory-installed option)
  • Valve packages available (field-installed accessory)
  • Several motor voltage options (factory-installed option)
  • Motors available from ¼ hp to 5 hp (factory-installed option)
  • 24 v motor control available (factory-installed option)
  • 18 gage, galvanized steel casing construction
  • Unit casing lined with 1-in. thick, dual density fiberglass insulation
  • Multiple casing liners available (factory-installed option)
  • Forward-curved, centrifugal, double-inlet fans are statically and dynamically balanced at the factory
  • 2 in. pleated filter
  • Certified coil performance in accordance with AHRI Standard 410
Reliability Features
  • Coil features:
    • ½ in. copper tubes with aluminum fins mechanically bonded to tube joints
    • Suitable for design working pressures of 250 psig at 200 F
    • Burst tested with air at 350 psig while submerged in water
    • Copper tubes comply with ASTM B-75
  • Motor features:
    • Permanently lubricated bearings
    • Class B insulation
    • Open drip-proof
    • Single speed
    • Suitable for continuous duty at 104 F
    • Motor and its mounting are independently isolated from the cabinet and blower
  • All equipment wiring complies with NEC requirements
  • Units constructed in accordance with ETL and ETL, Canada standards
  • Factory-installed motors and electric heaters are UL approved
  • Unit casing meets UL 181 and NFPA 90A standards
Maintenance Features
  • Stainless steel drain pan
  • Removable panels make access to components and connections easy
  • Removable panels make access to components and connections easy
  • Label information adhered to each unit includes model, size, coil information, electrical information, and tagging data
Installation Features
  • Belt-driven motor has a variable-pitch pulley which adjusts at the jobsite to accommodate limited ranges of air quantities and pressures
  • Motor has an adjustable platform for easy belt adjustment
  • Knockouts are provided for hanging the horizontal units that will accept a 3/8 in. threaded rod at the top and bottom of all unit corners
  • 1-in. long supply and return duct connections are provided
  • Factory-installed controls
  • Single point electrical connection
Standard Warranty
  • One-year parts
Factory-Installed Options
Control options:
  • No controls (J-box with motor wiring only)
  • Motor control only (24 v transformer, motor contactor, and terminal strip)
  • Motor control with interlocking disconnect switch
2-pipe or 4-pipe system combinations include:
  • 4, 6, or 8 row chilled water cooling coils
  • 4 or 6 row direct expansion cooling coils
  • 1 or 2 row hot water or steam heating coils
  • Total or auxiliary electric heat (1 to 3 stages)
Filter options:
  • 2-in. pleated filter (standard)
  • Two 1-in. throwaway filters
  • 1-in. pleated filter
  • 2-in. MERV 11 filter with 2-in. pleated pre-filter
Automatic air vents and drains on water coils
Liner options:
  • 1-in. thick, dual density fiberglass (Tuf-Skin™ II)
  • 1-in. foil faced fiberglass
  • ¾ in. closed cell insulation
Wiring packages
Motor voltage options include:
  • 120, 208, 230, or 277/1/60
  • 208, 230, or 480/3/60
  • 220/1/50
  • 380/3/50
Motor horsepower range options
Condensate overflow switch
Field-Installed Accessories
Valve packages factory assembled for field installation
24 v thermostats
Mixing box
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Additional Information
Other Fan Coils
42BV - Belt Drive Vertical
42D - Ducted
42C - Horizontal
42S - Stack
42V - Vertical
42WKN - Hydronic Cassette
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