Johnson Controls R-410A installation manual Field Connections Control Wiring, Power Wiring

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835964-UIM-A-0112

FIELD CONNECTIONS CONTROL WIRING

1.Route low voltage wiring into bottom of control box as shown in Figure 6. Make low voltage wiring connections inside the low volt- age box per Figures 7 - 11.

2.The complete connection diagram and schematic wiring label is located on the inside surface of the unit service access panel.

3.Replace the corner cover removed in Step 2.

4.All field wiring to be in accordance with national electrical codes (NEC) and/or local-city codes.

NOTE: A Start Assist Kit is available and recommended for long line set applications or in areas of known low voltage problems.

5.Mount the thermostat about 5 ft. above the floor, where it will be exposed to normal room air circulation. Do not place it on an out- side wall or where it is exposed to the radiant effect from exposed glass or appliances, drafts from outside doors or supply air grilles.

6.Route the 24-volt control wiring (NEC Class 2) from the outdoor unit to the indoor unit and thermostat.

NOTICE

To eliminate erratic operation, seal the hole in the wall at the ther- mostat with permagum or equivalent to prevent air drafts affecting the operation of in the thermostat.

ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES

POWER WIRING

24 VOLT CONTROL WIRING MINIMUM 18 GA. WIRE (NEC CLASS 2)

*TERMINAL W IS ONLY REQUIRED ON SYSTEMS

WITH HEAT.

CONTACTOR

TERMINALS

POWER WIRING

CONTROL WIRING

FACTORY WIRING

FURNACE OR AIR HANDLER TERMINAL BLOCK

C Y R G W

GND.

COIL

 

*

LUG

Y

R G W

 

 

 

 

CONDENSING UNIT

ROOM THERMOSTAT

 

 

 

 

 

 

ALL OUTDOOR WIRING MUST BE WEATHERPROOF. USE COPPER CONDUCTORS ONLY.

 

 

 

 

 

FIGURE 8: Typical Field Wiring (Air Handler / Electrical Heat) (Single-Phase)

ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES

GND.

LUG

POWER WIRING

CONTACTOR TERMINALS

COIL

24 VOLT CONTROL WIRING MINIMUM 18 GA. WIRE (NEC CLASS 2)

*TERMINAL W IS ONLY REQUIRED ON SYSTEMS WITH HEAT.

POWER WIRING

CONTROL WIRING

FACTORY WIRING

FURNACE OR AIR HANDLER TERMINAL BLOCK

C Y R G W

YR G W *

CONDENSING UNIT

ROOM THERMOSTAT

ALL OUTDOOR WIRING MUST BE WEATHERPROOF. USE COPPER CONDUCTORS ONLY.

FIGURE 9: Typical Field Wiring (Air Handler / Electrical Heat) (Three-Phase)

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Johnson Controls Unitary Products

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Contents Section II Safety List of FiguresList of Tables Section I GeneralSection III Unit Installation ADD-ON REPLACEMENT/RETROFITLimitations LocationGround Installation Roof InstallationPrecautions During Line Installation Liquid Line FILTER-DRIERPrecautions During Brazing of Lines Precautions During Brazing Service ValveSection VI Evacuation Section IV Orifice InstallationSection V TXV Installation Subcooling Charging Method TXV Indoor Section VII System ChargeSuperheat Charging Method Piston Indoor General Information & Grounding Field Connections Power WiringSection Viii Electrical Connections Field Connections Control Wiring Power WiringAC 1A ThermostatID Models PSC Single Stage AIR Handler AIR ConditionerAC 1B PSC Single Stage AIR AIR Handler ConditionerAC 5D Single Stage PSC AIR Furnace ConditionerSingle Stage AIR Conditioner AC 5ESingle Stage PSC Furnace Subcooling Charge Table is on the Unit Rating Plate MaintenanceSection IX Instructing the Owner Section X Wiring Diagram 412217 Johnson Controls Unitary Products York Drive Norman, OK
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R-410A specifications

Johnson Controls R-410A is a widely recognized refrigerant in the HVAC industry, primarily used in air conditioning and heat pump applications. Known for its environmental benefits and efficiency, R-410A has risen to prominence as a reliable replacement for older refrigerants such as R-22, which are being phased out due to their harmful impact on the ozone layer.

One of the standout features of R-410A is its low impact on global warming potential, making it an environmentally-friendly choice. It is composed of a mixture of hydrofluorocarbons (HFCs), specifically difluoromethane (R-32) and pentafluoroethane (R-125). This blend allows for efficient heat transfer while minimizing harmful emissions, addressing the growing concerns over climate change.

Johnson Controls emphasizes the efficiency of R-410A systems, which can provide a highly effective cooling performance. They are designed to operate at higher pressures compared to R-22, allowing for more efficient heat exchange and better overall system performance. This results in greater energy efficiency ratings, contributing to lower electricity bills for consumers.

In terms of technology, R-410A systems often feature advanced compressor designs and enhanced coil configurations, which optimize the system’s performance. Johnson Controls integrates state-of-the-art variable speed technologies and smart controls that enhance responsiveness and adaptability to changing environmental conditions. These innovations not only improve thermal comfort but also reduce energy consumption, leading to a smaller carbon footprint.

Another significant characteristic of R-410A is its compatibility with various lubricants, which is crucial for maintaining system performance and longevity. Johnson Controls often utilizes specially formulated lubricants that work optimally with R-410A, ensuring reliable operation and reducing the risk of issues related to lubrication.

In summary, Johnson Controls R-410A is an important refrigerant characterized by its efficient, environmentally friendly properties and advanced technologies. Its application in modern HVAC systems provides users with excellent performance, substantial energy savings, and an effective solution for climate-conscious cooling. As the industry continues to evolve, R-410A remains a central player in the push toward more sustainable and efficient heating and cooling solutions.