Friedrich H)A24K50L, R410A, H)A12K25L Remote Thermostat and Low Voltage Control Connections

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Remote Thermostat and Low Voltage Control Connections

 

Cool Off Heat

Auto On

RT5 (Two speed fan)

RT4 (One speed fan)

 

Remote Thermostat

Location

 

All Friedrich Vert-I-Pak units are factory configured to be controlled by using a 24V single stage remote wall mounted thermostat. The thermostat may be auto or manual changeover as long as the control configuration matches that of the Vert-I-Pak unit.

Manual Changeover Thermostat

For Heat Pump equipped units: a single stage, heat/cool thermostat with a terminal for a reversing valve operation is required. Terminal “B” should be continuously energized in the heat mode and terminal “G” should be energized whenever there is a call for heating or cooling. (Typically, a single stage, heat/cool thermostat designed for use with electric heat systems will meet the above requirements).

NOTICE

DO NOT use a two (2) stage Heat Pump Thermostat. Use of this type of thermostat may result in equipment and/or property damage

To control the unit with a wall-mounted thermostat:

1)Pull the disconnect switch.

2)Unscrew and remove the control box panel.

3)After selecting which side you want to run your thermostat wire through, run the wires through the side hole in the box to reach the connection terminal for the wiring.

4)Make the wire connections, appropriately matching the wires as shown in the wiring diagram.

5)Once each wire is matched and connected, the unit is now controlled by the thermostat.

6)Reattach the control box cover.

The thermostat should not be mounted where it may be affected by drafts, discharge air from registers (hot or cold), or heat radiated from the sun or appliances.

The thermostat should be located about 5 Ft. above the floor in an area of average temperature, with good air circulation. Close proximity to the return air grille is the best choice.

Mercury bulb type thermostats MUST be level to control temperature accurately to the desired set-point. Electronic digital type thermostats SHOULD be level for aesthetics.

Thermostat Location

NOTE: An improperly operating, or poorly located room thermostat can be the source of perceived equipment problems. A careful check of the thermostat and wiring must be made then to insure that it is not the source of problems.

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Contents R v i c e M a n u a l R 4 1 0 a M o d e l s Introduction Technical Support Contact InformationTable of Contents Your safety and the safety of others are very important Important Safety InformationRefrigeration System Hazards Property Damage Hazards Production RUN Number Product Line Serial Number Year ManufacturedMonth Manufactured Model Chassis SpecificationsIndoor WET Bulb TEMP. Degrees F AT 80 F D.B Extended Cooling PerformanceElectric Shock Hazard Electrical RequirementsRT5 Two speed fan RT4 One speed fan Remote Thermostat and Low Voltage Control ConnectionsThermostat Connections Quiet Start/Stop Electronic Control Board FeaturesElectronic Control Configuration Test Mode Electronic Control Error Code DiagnosticsDiagnostics Thermostat Compatibility Vpak electronic control FeaturesExternal Static Pressure Explanation of charts Capacitor Connections Components TestingCapacitors Capacitor Check with Capacitor AnalyzerDrain PAN Valve Components TestingHeater Elements and Limit SWITCHES’ Specifications Refrigeration Sequence of Operation Refrigeration AssemblyCUT/SEVER Hazard ServiceRisk of Electric Shock Sealed Refrigeration System RepairsEquipment Required Equipment Must be CapableFreeze Hazard Method Of Charging / RepairsUndercharged Refrigerant Systems Burn HazardRestricted Refrigerant System Overcharged Refrigerant SystemsCapillary Tube Systems Hermetic Components CheckMetering Device Check ValveChecking the Reversing Valve Testing the CoilReversing Valve DESCRIPTION/OPERATION Fire Hazard Procedure For Changing Reversing ValveTouch Test in Heating/Cooling Cycle Compressor Checks Ground Test Single Phase Resistance TestExternal Overload Vpak 9, 12, 18 K Btus Internal Overload Vpak 24 K BtusHigh Temperatures Compressor ReplacementRecommended procedure for compressor replacement Electrical Shock Hazard Routine Maintenance9K BTU, 12K BTU, & 18K BTU Electrical Troubleshooting Chart CoolingCircuit Breakers are Electrical Troubleshooting Chart Cooling 24K BTUHeat Pump Mode Electrical Troubleshooting Chart Heat PumpTroubleshooting Chart Heating Troubleshooting Chart CoolingElectric Heat VEA 09/12/18 with 2.5 KW, 3.4 KW or 5KWVHA 09/12/18 with 2.5 KW, 3.4 KW or 5KW Cool with Electric Heat Heat Pump with Electric Heat Cool with Electric Heat Heat Pump with Electric Heat Technical Service Data Technical Service DataVPK-ServMan-L Friedrich AIR Conditioning CO
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H)A09K25L, H)A12K50L, H)A09K50L, H)A24K10L, H)A24K25L specifications

Friedrich R410A is a refrigerant blend that has become a cornerstone in the HVAC industry, particularly for air conditioning systems. This hydrofluorocarbon (HFC) is known for its efficiency and environmentally friendly properties, making it a popular alternative to older refrigerants like R22.

One of the main features of R410A is its exceptional thermal efficiency. It has a higher cooling capacity compared to R22, which allows for smaller and more efficient equipment. This efficiency translates to reduced energy consumption and lower operating costs for users. Additionally, the higher pressure capability of R410A enables the design of more compact systems, which is particularly beneficial for residential and commercial applications where space is often limited.

R410A is characterized by its zero ozone depletion potential (ODP), which is a significant advantage over its predecessors. This makes it a more environmentally responsible choice, aligning with global initiatives to phase out substances that harm the ozone layer. However, it is essential to note that while R410A does not deplete the ozone, it does have a global warming potential (GWP) of approximately 2,088, making it less favorable in terms of climate impact compared to natural refrigerants.

In terms of technology, R410A is typically utilized in systems that are designed specifically for this refrigerant. Equipment compatible with R410A often features advanced components that can handle the higher pressures required. Many modern air conditioning systems equipped with R410A also incorporate variable-speed compressors and advanced electronic controls, enhancing overall performance and comfort.

Additionally, R410A systems often come equipped with variable refrigerant flow (VRF) technology, which allows for precise temperature control in multiple zones of a building. This versatility makes R410A an ideal choice for both residential and commercial installations, providing optimal comfort throughout various spaces.

In summary, Friedrich R410A stands out due to its high energy efficiency, zero ozone depletion potential, and suitability for modern HVAC technologies. As the industry moves towards more sustainable practices, R410A serves as a reliable refrigerant that balances performance with environmental responsibility. It’s a significant choice for anyone looking to invest in efficient and eco-friendly heating and cooling solutions.
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