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TECHNICAL SUPPORT
888-593-9988
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NAECA
• National Appliance Energy Conservation Act
• January 23, 2006
• Minimum SEER – 13– Previously – 10
• Minimum HSPF 7.7– Previously – 6.8
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Montreal Protocol
• Montreal Protocol on Substances that Deplete the Ozone Layer
• No Production of R-22 Equipment in 2010
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Montreal Protocol
• CFC Phase Out (R-12)– 1991 – 100%– 1996 – 0%
• HCFC Phase Out (R-22)– 1995 – 100%– 2020 – 0%
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G S C 1 3 0 3 6 1 A A Digit 1G = Goodman/Amana DistinctionsS = Goodman (high Feature set models)A = Amana
Digit 11: Minor Revision (not used for ordering)
Digit 10: Major Revision Digit 2S = Split
Digit 9: ElectricalDigit 3
Digits 6-8: Nominal Capacity C = Condenser R-22X = Condenser R-410A
Digits 4, 5: SEER H = Heat Pump R-22Z = Heat Pump R-410A
Digit 3: Unit TypeDigits 4, 5
Digit 2: Product Category 13 = 13 SEER14 = 14 SEER
Digit 1: Brand Name 16 = 16 SEER18 = 18 SEER
Digits 6-8 048 = 4 tons018 = 1.5 tons 060 = 5 tons024 = 2 tons 090 = 7.5 tons036 = 3 tons 120 = 10 tons042 = 3.5 tons
Digit 91 = 208/230 V, 1 Phase, 60 Hz2 = 220/240 V, 1 Phase, 50 Hz3 = 208/230V, 3 Phase, 60 Hz4 = 460 V, 3 Phase, 60 Hz5 = 380/415 V, 3 Phase, 50 Hz
Digit 10A = Initial Release
Digit 11A = Initial Release
2006 Split System Air Conditioner & Heat Pump Product Line Nomenclature
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Service Valves
• Service valves located at 90o angle.
• Unobstructed access to gauge ports.
• More room to maneuver tools.
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Access to the Control/Electrical Panel
• Two screws to remove the outside cover
• Removable Panel • Contactor with lug
connectors• Ground with lug
connector• Room for field installed
accessories
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Super-heat and Sub-cooling charts
• The super-heat and sub-cooling charts will be posted on the back side of the control door.
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Access to the Condenser Coil
• The 2006 units will come with 4 independent louver panels. They are easy to remove for quick accessibility to the condenser coil.
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2006 Product Line
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2006 Product Line
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2006 Product Line
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INSTALLATION TIPS • NO CAPILLARY TUBE EVAPORATORS
•LINE SETS WITH ¼ LIQUID 5/8 SUCTION MUST BE LESS THAN 25 FT. IN LENGTH
•EVAPORATORS WITH FLOWRATORS CHANGED TO THE PISTON SUPPLIED WITH NEW CONDENSORS
•WHEN CHARGING SYSTEM USE SUPERHEAT OR SUBCOOLING METHOD
•HEAD PRESSURE WILL BE LOWER THAN 10 SEER SYSTEM
•HEAT PUMPS REQUIRE COMPLETE SYSTEM CHANGE OUT
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INSTALLATION TIPS
USING A 13 SEER CONDENSER WITH A 10 SEER OR LESS EVAPORATOR MAY DEGRADE CAPACITY BY 6% TO 10%.
IN APPLICATIONS WHERE CAPACITY IS MARGINAL, IT MAY BE NECESSARY TO INCREASE THE CAPACITY OF THE CONDENSOR BY ½ TON.
IT IS IMPORTANT THAT WHEN DOING THIS , THAT THE ELECTRICAL SERVICE IS ADEQUATE FOR THE LARGER CONDENSOR. IT MAY ALSO BE NECESSARY TO INCREASE THE SIZE OF THE REFRIGERATION LINE SET.
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R-22 Phase-Out Timeline
$2/lb
$10/lb
$20/lb
% 1
996
CA
P
65%
35%
10%
%
No New Equip. EU
No New Equip. US
0
50
100
1999 2004 2010 2015 2020
EU Phase-Out
Montreal Protocol/US Phase-Out
R-22 Cost
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Why R-410a?R-22 Alternatives
R-134a
R-407c
R-410a
R-417b
Propane
Carbon Dioxide
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US New Refrigerant Transitions
R-134A
R-22
R-22
R-22
R-410A
R-410A
R-410A R-407C
1990 1995 2000 2005 2010
Residential1.5 to 5 Ton
Commercial5 to 100 Ton
Screw Chillers
60- 500 Ton
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Back Seat Service Valves
All “R” series models equipped with back seating service valves
RVP February 2003
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R-410 Facts
• Ozone friendly- No Chlorine
• Replacement for R-22, NOT a drop in!
• Higher Pressure Range-50 to 75% higher than R-22
• Requires Special Lubricants
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Components that needed Redesigned for R410A
• Compressor• Condenser coil• Filter Drier• Expansion device• Evaporator• Pressure switches
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Compressors
• Copeland ZRS and ZPS Compressors
• We will get further into these later in the program
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Pressure Switches
• Pressure Switches have to be at higher settings
• Low Pressure R410a=50psi
• High Pressure R410a=610psi
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Line SetsLine SetsNew Line Sets are always recommended, but
required if: • The previous system had a compressor burn out. • The existing line set has oil return traps. • The existing line set has been open to the
atmosphere for an extended time. • The existing line set is larger than or smaller than
the recommended line size for the Amana R-410a system.
• The existing line set is damaged, corroded, or shows signs of abrasion/fatigue.
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Special Tools Required
• Differences in Saturation Pressures between R22 and R410a affects many of the tools the Technician must use when Charging and Servicing an R410A system.
• Some of the tools used on R22 systems may be unacceptable for use on R410a systems.
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Manifold Gauge Set• Standard Gauges and hoses cannot be used
safely with R410a.• The High Side gauge should have a range of
zero to 800psi.• The Low Side gauge should have a range
from 30 inches vacuum to 250psi.• The Low Side gauge should also have a
500psi retardation feature. This slows the movement of the gauge needle at higher pressures.
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Manifold Gauge Set
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Refrigerant Hoses• The 600psi rating of
standard hoses is NOT adequate for R410a.
• Hoses need to be rated for a 800psi working pressure, with a 4000psi bursting rating.
• 5 to 1 safety margin is necessary to prevent dangerous hose ruptures.
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Vacuum Pumps• Pumps used with CFC
and HCFC charged systems may also be used on R410a systems as long as the pump is capable of attaining a vacuum of level of at least 250 Microns.
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Leak Detectors• Leak detectors should be
checked to see that they are designed to properly detect R410a.
• The detector should have adjustable sensitivity to allow leaks to be pinpointed in areas where background vapor might cause false readings.
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Two Stage Compressor
Features:
High Efficiency
Quiet Operation
Scroll Technology
No Shut-Down to Shift Capacity
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100% Capacity 67% Capacity
BypassPorts Closed
Bypass Ports Open
Copeland Scroll™ UltraTech Two-Stage Modulation Scheme
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R-410a• It’s a Blended Refrigerant.
• 50% R-32 and 50% R-125.
• This blend is a near-azeotrope, not a true azeotrope like R-502.
• A true azeotrope is a mixture that maintains its composition through both the liquid and vapor phase.
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R-410a
• For a near-azeotrope, the individual refrigerants evaporate or condense at different temperatures.
• The differences between these boiling points with mixed refrigerants is called
“ TEMPERATURE GLIDE”
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R-410a
• When temperature glide is high the refrigerants can separate during evaporation or condensation.
• This changes the composition of the resulting vapor and liquid.
• This separation is called:
“FRACTIONATION”
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R-410a• Fractionation is very low.• R410a does not significantly separate in the
system and the composition of the refrigerant has very minor changes if a leak occurs.
• But the fact that some fractionation occurs, means that charging techniques must be adjusted.
• The temperature glide of R410a is very low, thus it acts very much like a single refrigerant.
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R-410a
• Another significant difference between R410a and R22 is its saturation pressure range.
• R410a has a higher pressure range curve than R22.
• Remember, R410a is a near azeotrope that is subject to some fractionation. At any specific temperature it has a higher vapor pressure when saturated.
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Cylinders
• Most R410a cylinders have an internal dip tube which allows the feeding of liquid when the cylinder is in an upright position. They must be inverted for for vapor flow.
• Color is rose(pink).• The cylinder has to have minimum cylinder
pressure requirement of 400 psig rating (DOT 4B400 or DOT 4BW400)
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Lubrication
• The chemistry of R410a makes it incompatible with mineral based lubricants.
• Mineral oils typically used with R22 has relativity low Miscibility with with R410a.
• Miscibility is the ability of an oil to dissolve uniformly in refrigerant in either the liquid or vapor state.
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Lubrication
• The preferred lubricants are the Polyolester or ester based oils.
• Commonly known as POE oils.• POE oils are miscible with with any
mineral oil traces that might be in the system.
• While miscible, it is very important to remove as much mineral oil, particulates, and moisture from existing line sets as possible.
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Lubrication
• The POE oils are more Hygroscopic than mineral oils.
• This means that they absorb moisture very rapidly.
• Exposure to the atmosphere must be limited. • The oil will break down into acid and alcohol• Keep the system closed
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Lubrication• Any moisture absorbed by into POE oils
cannot be removed with a vacuum pump-Only a new drier will work!
• Break a recovery vacuum with Nitrogen!
• Keep all systems closed until any component replacements are ready for installation.
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Brazing
• Should be using at least 2% silver alloy
• Always wear glasses and gloves.
• Always purge with nitrogen when brazing.
• Protect the service valves with wet rags or heat sink material.
• Scale will get you with POE oils.
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Evacuation
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Evacuation
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Recovery• Yes, you still have to recover the refrigerant.• R410a does not readily biodegrade, care
should be taken to avoid any releases to the environment.
• The recovery machines used for R410a must be designed to prevent cross contamination between oils and refrigerants..
• Use machines certified for use with R410a.
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Recovery
• Preferred type is an oil-less compressor model with a pump down feature for removal of all refrigerant from the machine after each use.
• If an oil bearing compressor is used, the machine should be restricted to R410a refrigerant. The machine must use ester based oil.
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Charging
• Charge through the suction side of the system.
• Use a commercial-type metering device in manifold hose to allow liquid to vaporize.
• Follow your typical sub-cooling and superheat procedures to arrive at the correct charge.
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Charging Single Stage
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Charging RSG
• Set unit to operate at low stage cooling• Operate for 10 minutes.• Check and record low stage liquid
pressure at the service valve.• Set thermostat to operate at high stage.• Operate for 10 minutes.• Check and record high stage liquid
pressure at service valve.
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Charging RSG
• The high stage pressure should be noticeably higher than the low stage liquid pressure.
• If the pressures are identical, the compressor did not switch from low to high stage.
• Verify wiring and t-stat settings.
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Charging RSG
• Run the unit on low stage and make the final charge adjustments on low stage.
• Do not adjust charge to change sub-cooling on high stage. Charge adjustments must only be made under low stage cooling.
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