Carrier Official 42 Series Manual for Electric Heating and Cooling Systems
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Thermostatic 2-Pipe Total Electric Heat with- Valve Control Ð With this system, the complete heat- ing requirement for the space is provided by the electric heater; the water system is never changed over for heating. It is there- fore possible, just as with 4-pipe systems, to have heating or cooling at any time of the year.

The fan runs continuously unless it is manually switched to OFF position. Fan must be on before thermostat can send signal to open chilled water valve or turn on electric heater.

Normally, an automatic changeover thermostat with a dead band between heating and cooling is used, but a manual

changeover thermostat is also suitable. A 2-way or 3-way valve must also be used so that the chilled water is off when- ever the heater is on. No changeover device to sense water temperature is necessary.

NOTE: Wiring diagrams are for 120-v power supply. If other voltages for heaters or controls are speci®ed, wiring may dif- fer from that shown.

For control package descriptions, see control components sections entitled Remote-Mounted Controls and Unit- Mounted Controls.

UNIT

LOCATION

WIRING PACKAGE*

ELECTRIC

TYPE

Automatic System

Manual System

VALVE

 

Vertical

Unit

24-Q

Available on Special Order.

 

Mounted

Any 2- or 3-way,

 

 

 

Vertical

 

22-J, 22-K,

 

2-position valve

or

Wall Mounted

23-15, 23-16

Package.

23-09, 23-10

Horizontal

 

 

 

 

 

 

 

*Packages on current price pages.

NOTES:

1.Motors thermally protected.

2.Use copper conductors only.

3.See unit nameplate for power supply. Provide disconnect means and overload protection as required.

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Contents Application Data Contents Pipe Control Selection GuideThermostatic Fan Control, 2-Pipe Systems Ð Standard Wiring PackagesOnly Thermostatic Electric Valve Control, 2-Pipe ÐUnit Location Wiring Package Electric Type Unit Location Wiring Package Electric Type Unit Type Location Wiring Package Electric Heater Construction Electric HeatHeater Electrical Data REMOTE-MOUNTED Controls Combination Thermostat/3-Speed SwitchThermostat Electrical Data Pilot Duty Ð 125 VA Thermostat Electrical Ratings Amperes Thermostat Valve Load Fan SwitchThermostat and Fan Switch Electrical Ratings Alternate Wall ThermostatsUNIT-MOUNTED Controls Combination Thermostat/ON-OFF Toggle SwitchMED Thermostat Electrical Data Pilot Duty Ð 125 VA at 120-277 Standard 2-pipe units will be the same end connection Basic DefinitionsField Piping Connections Hydronic Coil ArrangementValve Packages Symbol And Placement Of ValvesPage Valve Packages Two-Way Motorized Control Valve No Motorized Control Valve Three-Way Motorized Control ValveValve Package Arrangements Page Description Valve Package ArrangementsCapacity Acceptable Field-Furnished Pneumatic ValvesPiping Components SYMBOL/SKETCH Description CV Factor Rating Steam PSI USEHayes Compression Stop Valve Piping ComponentsWAY Pneumatic Valve SYMBOL/SKETCH Description CV Factor Rating SteamUSE WAY Motorized Valve ElectricGraph Example CV Factor vs Water Pressure DropFormula Example Page Joint Materials Copper Water Tube and Joint Material Pressure RatingsEquivalent water ¯ow method for all 42 Series Models Correction Factors for GlycolExample Cabinet Changes Standard Accessories and Options

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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