Carrier 42BHC User Manual

Copyright 2003 Carrier Corporation Form 42BHC-1PD
Satisfy All Your Design Requirements
with Carrier’s Versatile 42BHC Fan
Coil Unit
• A selection of 6 sizes covers
capacities from 800 to 4000 cfm
• Choice of motors, from
1
/
4
to 3 hp,
eliminates oversizing
• Wide range of coil options for 2-pipe
or 4-pipe system
• Optional DX coils with expansion
valve and distributor
• Single and three-phase electric
heat (1.0 to 40 kW)
Features/Benefits
The 42BHC fan coil unit
provides year-round comfort
air conditioning with central
station operating economy.
A variety of coil options
reduces first cost
Four, 6 or 8-row cooling coils combine
the capacities you need with the most
efficient heat transfer surface. For
4-pipe systems, select either of two
split-coil options. Coils consist of alu-
minum fins securely bonded to
1
/
2
-in.
OD seamless copper tubes. Each fin’s
aluminum collar ensures accurate con-
trol of the fin spacing, while complete-
ly covering the tubes to lengthen coil
life. All coils also feature manual air
vents, with automatic air vent available
as an option.
Fan wheels are designed to
provide low operating costs
The forward-curved, centrifugal,
double-inlet fans are statically and
dynamically balanced at the factory to
minimize transmission of vibration
to the building structure.
42BHC
System Fan Coil
800 to 4000 Cfm
Product
Data
STANDARD 42BHC UNIT
42BHC UNIT WITH ELECTRIC HEAT

Carrier 42BHC Specifications

General

Brand	Carrier
Model	42BHC
Category	Fan
Language	English

Summary

Product Overview and Features

Key Features and Benefits

Highlights the key advantages and operational benefits of the 42BHC fan coil unit.

Unit Specifications

Model Number Nomenclature

Explains the coding system used for 42BHC unit model numbers and their components.

Physical Data

Details the physical characteristics and specifications of the 42BHC units.

Factory-Installed Options

Lists available factory-installed options that enhance unit functionality and application suitability.

Dimensions

Provides detailed dimensional drawings and measurements for various 42BHC unit configurations.

Unit Corner Weights

Offers weight distribution data for the unit's corners, essential for installation planning.

Application and Performance Data

Selection Procedure

Outlines the step-by-step process for selecting the appropriate 42BHC fan coil unit for a given application.

Performance Data and Capacities

Contains tables detailing airflow, cooling, heating, and DX capacities, along with correction factors.

Water Pressure Drop and Cv Factors

Provides data for calculating water pressure drop using Cv factors for various coil configurations.

Component Static Resistance

Details static pressure resistance values for different unit components, aiding in system design.

Electrical, Controls, and Wiring

Typical Wiring Schematics

Illustrates standard single and three-phase wiring diagrams for fan coil unit installation.

Electrical Data

Presents electrical data, including full load amps and electric heater availability by unit size and voltage.

Controls

Describes standard and optional control features and motor configurations for the fan coil units.

Guide Specifications

System Description and Quality Assurance

Defines the system's general characteristics and outlines quality assurance measures for components.

Equipment Details and Coil Specifications

Details unit construction, fan design, and coil specifications, including materials and operating pressures.

Electric Heat and Filter Specifications

Covers electric heater construction, filter options, insulation types, and control system configurations.