Table of Contents

Important Safety Information

2-4

Reversing Valve Description/Operation

28

Introduction

4

Testing Coil

28

Vert-I-Pak Model Number Identifi cation Guide

5

Checking Reversing Valves

28

Serial Number Identifi cation Guide

5

Reversing Valve

 

Electrical Requirements

6

Touch Testing Heating/Cooling Cycle

29

 

 

Chassis Specifi cations

7

Procedure For Changing Reversing Valve

29-30

 

 

Cooling Performance Data

8

Compressor Checks

30

 

 

Extended Cooling Performance

8

Locked Rotor Voltage Test

30

 

 

Electronic Control Features

9

Single Phase Connections

30

 

 

Electronic Control Sequence of Operation

10-11

Determine Locked Rotor Voltage

30

 

 

Low Voltage Interface Connections

12

Locked Rotor Amperage Test

30

 

 

Service

13

Single Phase Running & Locked Rotor Amperage

30

 

 

VPAK 9-18 BTU Units Components Identifi cation

14

Checking the Overload

30

 

 

VPAK 9-18 BTU Units Components Identifi cation

15

External Overload

31

 

 

Error Codes and Alarm Status

16

Compressor Single Phase Resistance Test

31

 

 

Components Testing

17

Compressor Replacement

32-33

 

 

Electronic Control Board Components Identifi cation

18

Routine Maintenance

33

 

 

Components Testing (Continued)

19-22

Unit Performance Test Data Sheet

34

 

 

Refrigerant Sequence of Operation

23

Thermistor Resistance Values

35

 

 

Sealed Refrigeration System Repairs

24

Troubleshooting Charts

36-39

 

 

Refrigerant Charging

24

Remote Wall Thermostat Wiring Diagrams

40

 

 

Method Of Charging

22-23

Electrical and Thermostat Wiring Diagrams

41-46

 

 

Undercharged Refrigerant Systems

25

Accessories

47

 

 

Overcharged Refrigerant Systems

26

Warranty

48

 

 

Restricted Refrigerant Systems

26

VPAK 9-18K Parts

50-53

 

 

Capillary Tube Systems/Check Valve

27

VPAK 24K Parts

54-58

 

 

 

 

Technical Support/Contact Info

59

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Friedrich R410A manual Table of Contents

R410A 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.