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  • 1

    R32 Installer training

  • 2

    R32 Installer training

    Section 1: Why Change to R32

    Section 2: Standards / Safety

    Section 3: Working with R32

  • Currently available full Split unit indoor full range

    3

    Urura sarara [FTXZ-N] Emura [FTXJ-MW/S] Standard wall mount [FTXM-M]

    Multi Split [MXM]

    SMART cassette single phase pair only

    Available in June 2017 Extended Split range and Sky Air Mini Sky Air Sky Air Smart and Classic full range Sky Air indoor units will work with both R410A and R32 [different Condensers required]

  • Section 1

    4

    Why Change to R32

    HFC Phase down 2015 2030

    Refrigerant properties

    R32 in the market today

  • 5

    GWP in CO2 tonnes equivalent of HFCs

    3922

    2088

    1430

    675

    50 1 0

    1000

    2000

    3000

    4000

    5000

    R404A R410A R134A R32 CH4 CO2

    Ban by 2030

  • Section 1: Why Change to R32 1.1. HFC Phase down

    6

    Specific action Where it will impact Reason

    Refrigerant phase out GWP Refrigerants >2500 [ie; R404A]

    Take action on Highest GWP products

    Refrigerant Phase down GWP Refrigerants

  • 7

    Section 1: Why Change to R32 1.1. HFC Phase down

    0

    5

    10

    15

    20

    25

    30

    35

    40

    45

    0%

    20%

    40%

    60%

    80%

    100%

    120%

    2015 2016 17 2018 20 2021 23 2024 26 2027 29 2030

    % Reduction from 2011 levels Refigerant cost / kG

  • Kigali deal on HFCs 1.1. HFC Phase down

    8

  • 9

    Section 1: Why Change to R32 1.1. HFC Phase down EU countries

    0%

    20%

    40%

    60%

    80%

    100%

    120%

    2015 2016 17 2018 20 2021 23 2024 26 2027 29 2030 2034 2036

    % Reduction from 2011 levels 2016 Kagalli Protocol

  • Refrigerant GWP Kg T CO2 eq

    R23 14800 10 148.0

    R404A 3922 10 39.2

    R410 2088 10 20.9

    R134a 1430 10 14.3

    R32 675 10 6.8

    TCO2eq = tonne CO2 equivalent = kg of charge x GWP / 1000

    Measure for refrigerant charge

    10

    Section 1: Why Change to R32 1.2. Refrigerant properties

    R32 32% of R410A CO2 tonnes equivalent on a like for like volume basis

  • 1 kg of R410A = 2.088 TCO2eq

    0.7 kg of R32 = 0.4725 TCO2eq

    0.3kg less in charge = up to 23% lower in TCO2eq

    R410A R32

    3 kW split system

    Actual system Example of CO2-equivalence More efficient refrigerant means less volume required to do the same amount of work

    11

    Section 1: Why Change to R32 1.2. Refrigerant properties

  • R410A = 50% R32 + 50% R125

    R32 = CH2F2 difluoromethane, a single component HFC

    Already used as a component of the blend R410A

    Therefore has similar properties to R410A

    HFC32

    12

    Section 1: Why Change to R32 1.1. HFC Phase down

  • R410A = 50% R32 + 50% R125

    GWP

    675

    2087.5 (2088)

    3500

    Note: GWP values based on the 4th assessment of IPCC.

    13

    Section 1: Why Change to R32 1.1. HFC Phase down

  • 14

    What if only R32 is used without R125?

    lower environmental impact

    (*) lower charge depends on the model design and marketing choice

    Section 1: Why Change to R32 1.2. Refrigerant properties

  • IPC4 GWP Value

    Why Change to R32 System performance

    15

  • Should not cost any more

    Has a higher efficiency

    Is as reliable

    16

    Key requirement for a new product

  • 17

    Daikin first in the world to launch R32 A/C in 2012

    > 4 million R32 products sold

    Daikin, Hitachi, Melco, Panasonic, Fujitsu, Corona are selling R32 products

    Fujitsu & Daikin launched residential R32 unit in Australia

    Daikin Ururu Sarara 2013, extended range in 2015

    Daikin launched/is launching models in India, Thailand, Vietnam, Malaysia, Indonesia,

    High ambient R32 inverter flagship will be launched this year by DAME

    Several demonstration and testing projects incl also local manufacturers in China, Middle East, Asia - increasing number of developing countries show intrest to change from R22 to R32

    Goodman plans to launch R32 PTAC products in the USA

    Section 1: Why Change to R32 1.3. R32 in the market today

    Over 12 million units sold world wide

  • Section 2 Standards

    ISO 5149, ISO 817, & EN378

    Safety considerations

    Maximum allowable charge

    New A2L classification

    18

  • 19

    Field International Europe US

    Refrigerant Classification

    ISO817 -NA-

    (based on ISO) ASHRAE 34

    UL 2182

    Usage Restriction for

    Safety

    ISO5149 EN378

    New version due in early 2017

    ASHRAE 15

    IEC60335-2-40 Under revision

    EN60335-2-40 Based on IEC

    UL 207 UL 250 UL 471 UL 474 UL 484 UL 984

    UL 1995 UL 60335-2-40

    Section 2: Standards 2.1. ISO5419, ISO817 & EN378

  • 20

    Under ASHRAE 34, ISO 817, & EN378 2016 R32 is deemed to be a lower flammable gas in a new category A2L

    Section 2: Standards 2.1. ISO5419, ISO817 & EN378

    20

    Class 1 Class 2L Class 2 Class 3

    Not Flammable Slightly Flammable Burning velocity below 10 cm/s

    Low Flammability High Flammability

    R744 (CO2) R32 R152a R290

    R410A R1234 yf R600

    R134a R1234 ze R1270

  • 11,12,13,13B1,14,22,23,113,114,115,116,124,125,134A,218,227ea,236fa,C318,401A,401B,401C,402A,402B,403B,404A,407A,407B,407C,407D,407E,407F,408A,409A,409B,410A,410B,414A,414B,416A,417A,417B,420A,421A,421B,422A,422B,422C,422D,423A,424A,425A,426A,427A,428A,434A,437A,438A,442A,500,501,502,503,504,507A,508A,508B,509A,403A,411A,411B,412A,413A,418A,419A,7

    44,

    142b,152a, 415A, 415B, 406A, 439A, 440A,

    512A,

    717

    50,170,1150,290,1270,E170,600,600a,601,601a,429A,

    430A,431A,432A,433A,433B,433C,435A,436A,436B,441A, 510A,

    511a,

    30,123,245fa

    1 3 2 What does it mean in terms of refrigerants

    1234yf, 1234ze,

    32, 143A

    2L

    A

    B DR5, L41

    Section 2: Standards 2.1. ISO5419, ISO817 & EN378

    21

  • 22

    Flammability classification of R32 = A2L (ISO 817)

    Class A: Non Toxicity* Class B: High Toxicity

    Class 3: High Flammability A3 B3

    Class 2: Lower Flammability A2 B2

    A2L B2L

    Class 1: Non Flammability A1 B1

    SAFETY GROUP

    R410A / R22 Propane,

    iso-butane

    R32

    *Class A signifies refrigerants for which toxicity has not been identified at concentrations less than or equal to 400 ppm

    Section 2: Standards 2.1. ISO5419, ISO817 & EN378

    22

  • 23

    Charge limits example for 2L refrigerants: human comfort and other applications

    -

    2.00

    4.00

    6.00

    8.00

    10.00

    12.00

    14.00

    - 50.00 100.00 150.00 200.00 250.00 300.00 350.00 400.00

    CH

    AR

    GE

    LIM

    ITS

    -kg

    -

    ROOM VOLUME -m-

    Ceiling

    Wall

    Floor

    Calculation based on R1234yf and R32.

  • When working with any gases various considerations need to be taken to ensure a safe working environment.

    R32 is similar however there are a few extra precautions resulting from its mild flammability

    They cover precautions relating to the fire triangle

    The precautions are simple

    Avoid a build up of gas

    Avoid sources of ignition

    Even if all the right circumstances

    come together then it is burns very slowly

    Hence the new classification A2L

    24

    Safety considerations when using a gas

    Source of ignition

    Mix of refrigerant [in the right % with air]

  • 25

    When considering the build up of gas the following is important to consider;

    Understand of Density of an A2L gas

    GAS Densitykg/cm3

    R32 1.1

    Iso-Butane 2,15

    Natural Gas 0,6

    R22 1.01

    410A 1.06

    Acetylene 1.1

    Section 2: Standards 2.2. Safety considerations

    25

  • 26

    Too lean

    100 % air 0 % air 0 % gas 100 % gas

    Too rich

    Lower Flammable

    Limit

    LFL

    Upper Flammable Limit

    UFL

    Section 2: Standards 2.2. Safety considerations

    26

    Only a mixture of flammable gas with Oxygen between the Lower and Upper flammability limits could have any chance of ignition

  • Every flammable gas needs oxygen to burn; but how much oxygen depends on the gas

    A flammable gas can only burn between LFL & UFL (lower flammable limit & upper flammable limit)

    Only a mixture of between 14% and 31% R32 in the air can burn

    27

    R32 14-31

    Iso-butane 1,8-8,4

    Natural gas 5-15,8

    R410A /

    Acetylene 2,3->80

    GAS LFL-UFL

    100% air 0% gas

    0% air 100% gas

    LFL UFL

    27

    Section 2: Standards 2.2. Safety considerations

  • 28

    Minimum ignition temperature of R32 compared to that of other gasses .. Higher the number the better.

    50 x more energy required to ignite than Natural Gas

    GAS MIE (J)

    R32 0.015 - 0.100

    Iso-Butane 0.00025

    Natural Gas 0.00028

    R22 na

    410A na

    Acetylene 0.00017

    Hydrogen 0.00

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