Carrier 42BHC Options and accessories, Factory-installed options, Field-installed accessories

Options and accessories

42BHC, BVC OPTIONS AND ACCESSORIES

ITEM	OPTION*	ACCESSORY†
Automatic Air Vents	X
Controls	X
Electric Heat	X
Filters	X
Heating/Cooling Coils	X
Insulation	X
Mixing Boxes		X
Motors	X
Thermostats		X
Valve Packages		X
*Factory-installed option.
†Field-installed accessory.

The 42BHC and 42BVC fan coil units are designed to offer maximum flexibility in an application, accessibility for service, quiet operation and durability.

Factory-installed options

Automatic air vents — Automatic air vents have fiber- washers, which allow air in the pipes to pass through, automatically bleeding the system. The fiber washers elimi- nate the need to manually remove air from the system. When wet, washers swell and seal the system.

Coils — Coils are available in a choice of two-pipe system with 4-row cooling/heating or four-pipe system with 4, 6 or 8-row cooling and 1 or 2 row heating.

Reheat operation is standard. Preheat is available as an option.

Controls

•Interlocking disconnect switch

•Heater power fusing

•24 v Class 2 transformer (40 va)

•8-pole control terminal strip

•Auto reset temperature limit switch

•Airflow safety switch

•Motor power fusing

•Motor control contactor

•24 v condensate overflow switch

Electric heat — Total electric heat eliminates the require- ment for a boiler. Heating and/or cooling may be available on an individual basis throughout the year. Resistance electric heat is available from 1.0 kW to 40.0 kW (refer to

electric heater data table for availability per unit) with single-stage or multiple-stage, single power source.

Voltages:

•115 v, 208 v, 230 v and 277 v single-phase 60 Hz

•208 v, 230 v and 480 v three-phase 60 Hz

Electric heat is available with the following staging options (3-phase staging is balanced).

•1 to 12 kW 1 stage only — single phase

•3 to 12 kW 1 or 2 stage only — single phase

•1 to 40 kW 1 stage only — 3 phase

•4 to 40 kW 1 or 2 stage only — 3 phase

•12 to 40 kW 1, 2, or 3 stage — 3 phase

Heater coils are constructed of high-grade resistance wire that is supported by ceramic insulators on plated steel brackets. These heat elements are suspended directly in front of the outlet after the blower and the coil. High limit thermal cutouts protect the heater in the event of air failure.

Filters — Two in. pleated filters are standard. One-in. pleated, two 1-in. throwaway, or 2-in. MERV (minimum efficiency reporting value) 11 filters with 2-in. pleated pre-filter are available. The 2-in. MERV 11 filters with 2-in. pleated pre-filter include a filter rack.

Insulation — Tuf-Skin™ II (1-in. thick) insulation is standard. Units are available with ¾-in. closed cell, 1-in. Tuf-Skin Rx™ edge sealed, or 1-in. foil-faced insulation.

Motors — A wide selection of standard motors provides efficient operation in ducted applications with excellent performance with up to 2 inches of total static pressure.

Available motor options:

•115 v, 208 v, 230 v and 277 v single-phase 60 Hz

•208 v, 230 v and 460 v three-phase 60 Hz

•Open drip-proof motors

•External junction box

Field-installed accessories

Mixing boxes — Mixing boxes can be used when outside air is required for ventilation. Preassembled at the factory and shipped separately with base rails for field installation, mixing boxes include a linkage kit consisting of two crank arms, 2 swivels and either a 25 in. long (for sizes 06-16) or a 84 in. long (for sizes 20-40) rod for field installation of an actuator.

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