Carrier 42 SERIES specifications Unit Location Wiring Package Electric Type

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STANDARD WIRING PACKAGES (cont)

Thermostatic 2-Pipe Auxiliary Electric Heat with Valve Control Ð This system, also called Twi- light or Intermediate Season electric heat, goes a long way towards solving the spring and fall control problems of 2-pipe systems.

You can run chilled water late into the fall, turn it on early in the spring and still have heat available to all units when- ever required.

In winter the system is switched over to hot water. Two changeover devices are required for this. One device switches the action of the thermostat and the other locks out the elec- tric heat when hot water is in the coil.

With this system, the fan runs continuously unless manu- ally switched to OFF position. Fan must be on before ther- mostat can send signal to open chilled water valve or turn on electric heater.

Two control methods are available:

1.Use the standard automatic changeover thermostat with a dead band between heating and cooling, or Ð

2.Use a manual changeover thermostat. With this method only one changeover is required.

Be sure to include a 2-way or 3-way electric valve with this system.

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 are 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 Control Selection Guide PipeStandard Wiring Packages Thermostatic Fan Control, 2-Pipe Systems ÐThermostatic Electric Valve Control, 2-Pipe Ð OnlyUnit Location Wiring Package Electric Type Unit Location Wiring Package Electric Type Unit Type Location Wiring Package Electric Electric Heat Heater ConstructionHeater Electrical Data Combination Thermostat/3-Speed Switch REMOTE-MOUNTED ControlsThermostat Electrical Data Pilot Duty Ð 125 VA Alternate Wall Thermostats Fan SwitchThermostat and Fan Switch Electrical Ratings Thermostat Electrical Ratings Amperes Thermostat Valve LoadCombination Thermostat/ON-OFF Toggle Switch UNIT-MOUNTED ControlsMED Thermostat Electrical Data Pilot Duty Ð 125 VA at 120-277 Basic Definitions Standard 2-pipe units will be the same end connectionHydronic Coil Arrangement Field Piping ConnectionsSymbol And Placement Of Valves Valve PackagesPage Valve Packages Two-Way Motorized Control Valve Three-Way Motorized Control Valve No Motorized Control ValveValve Package Arrangements Page Valve Package Arrangements DescriptionAcceptable Field-Furnished Pneumatic Valves CapacitySYMBOL/SKETCH Description CV Factor Rating Steam PSI USE Piping ComponentsHayes Piping Components Compression Stop ValveWAY Motorized Valve Electric SYMBOL/SKETCH Description CV Factor Rating SteamUSE WAY Pneumatic ValveCV Factor vs Water Pressure Drop Graph ExampleFormula Example Page Copper Water Tube and Joint Material Pressure Ratings Joint MaterialsCorrection Factors for Glycol Equivalent water ¯ow method for all 42 Series ModelsExample Standard Accessories and Options Cabinet Changes

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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