ELECTRIC HEAT

Application Ð Electric heaters are available for in-stallation on Carrier fan coil units in the following applications.

TOTAL ELECTRIC HEAT Ð This system provides com- plete heating during the heating season; no boiler is re- quired. Heating and cooling are now available on an indi- vidual basis throughout the year with a 2-pipe system.

Chilled water is used for cooling and the electric heater is used for heating. Room controls can be supplied for either manual or automatic changeover.

AUXILIARY ELECTRIC HEAT Ð This system is used for heating between seasons or during the cooling season when chilled water is being circulated. Individual room controls are supplied to provide electric heat only when chilled water is being circulated through the system. Water ¯ow through the unit is shut off when the heater is turned on.

During the winter heating season, heating is provided by hot water circulated through the system. A changeover device locks out the electric heat when the hot water is circulated.

Heater Construction

STRIP HEATERS Ð Used with Model 42C ceiling units, Model 42D ducted units and Model 42S stack units.

These heaters consist of coils of the highest grade resistance wire, insulated by ceramic insulators in alumi- nized brackets.

All heaters except those used in 42S stack units are po- sitioned on the incoming (preheat) side of the unit coil. On

MODEL 42V VERTICAL UNIT

WITH ELECTRIC SHEATH HEATER

42S stack units, the strip heater is located in the fan dis- charge on the leaving side of the coil.

SHEATH HEATERS Ð Used with Model 42V vertical units. These heaters consist of the highest grade resistance wire, centered in a 1¤2-in. diameter copper-plated steel sheath. The wire is insulated from the sheath by magnesium oxide pow- der packed around it. To increase the heater surface exposed to air, a 11¤4-in. OD ®n of copper-plated steel is wound around the sheath in a continuous spiral that makes 5 turns per lin- eal inch. Sheath and ®n are permanently bonded together by copper brazing.

The heaters are positioned on the leaving (reheat) side of the unit coil. On special units with high efficiency motors, a strip heater will be installed in the fan discharge on the in- coming (preheat) side of the unit coil.

Heater Electrical Data

1.Load voltage may be 120, 208, 240 or 277 volts. For unit size and kW limitations, refer to the speci®c unit catalogs.

2.All heaters are single stage and single phase.

3.Unless a single power-source option is selected, the elec- tric heat units require 2 separate power sources. With the single power-source option, only one line circuit need be brought into the unit. Fuse protection is added to the motor/ control circuit to protect these components. This is sepa- rate from the ®eld-furnished total unit overcurrent protection.

MODEL 42C CEILING UNIT

WITH ELECTRIC STRIP HEATER

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Carrier 42 SERIES specifications Electric Heat, Heater Construction, Heater Electrical Data
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42 SERIES specifications

The Carrier 42 SERIES represents a cutting-edge solution in the realm of HVAC systems, meticulously designed to provide efficient heating, cooling, and ventilation for residential and commercial spaces. Known for their reliability and superior performance, these units combine advanced technologies with user-friendly features, catering to diverse climate needs.

One of the standout features of the Carrier 42 SERIES is its energy efficiency. These units are equipped with high Seasonal Energy Efficiency Ratings (SEER) and Heating Seasonal Performance Factor (HSPF) ratings, which translate to reduced energy consumption and lower utility bills. The use of advanced inverter technology allows the compressor to adjust its speed and output according to the precise heating or cooling needs of a space, ensuring optimal comfort while minimizing energy waste.

In terms of operation, the Carrier 42 SERIES includes a variable speed compressor that not only enhances comfort but also ensures quieter operation. Unlike traditional systems, these units can run at lower speeds for longer periods, resulting in a more consistent indoor climate without the disruptive noise typically associated with HVAC systems.

Another significant aspect of the Carrier 42 SERIES is its robust construction and advanced materials. Built with durability in mind, these units feature weather-resistant cabinets and enhanced corrosion protection, ensuring a longer lifespan and reliable performance even in harsh environmental conditions.

Smart connectivity is also a hallmark of the Carrier 42 SERIES. Many models come with integrated Wi-Fi capabilities, allowing users to control their heating and cooling systems remotely via mobile apps. This feature enables homeowners to manage their indoor climate settings from anywhere, enhancing convenience and energy savings.

Furthermore, the Carrier 42 SERIES incorporates advanced air filtration systems designed to improve indoor air quality. These systems capture dust, allergens, and other airborne pollutants, contributing to a healthier living environment.

Overall, the Carrier 42 SERIES emerges as an exceptional choice for anyone seeking a reliable, efficient, and technologically advanced HVAC system. With its focus on energy efficiency, quiet operation, durability, smart home integration, and air quality improvement, it meets the demands of modern users while ensuring comfort throughout the year.
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