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# 504,910M

Limited Warranty

August 1, 1997

This warranty gives you specific legal rights and you may have other rights

which vary from state/province to state/province.

Warrantor:  Armstrong Air Conditioning Inc., 421 Monroe St., Bellevue, OH  44811

Armstrong Air Conditioning Inc. products are available under the following names:  Air Ease, Armstrong Air, American Aire, Concord

Subject to the limitations stated in this warranty, we warrant to the first buyer for use the residential heating, cooling or heat pump unit, when
installed, operated and maintained as required by this warranty, to be free of defects in workmanship or material for a period of 5 years
(1 year for commercial equipment) from the time of installation.  We will replace any defective component without cost or expense to you
except for the costs of delivery and labor for removal and replacement of the defective component.

The SCU 12 Series air conditioners carry a 10 -year compressor warranty.

Warranty Begins

The warranty period begins when the installation is complete and the product is ready to operate.  You must be able to verify this date
whenever a warranty claim is made.  Original bill of sale, installer’s invoice or other similar document will suffice.  If the beginning date
cannot be verified, we will consider warranty coverage to begin 6 months after the date the product was shipped from our factory.

Limitations on Implied Warranties

Implied warranties of merchantability or, to the extent applicable, fitness for a particular purpose are limited to 5 years, the same duration
as the basic limited written warranty provided herein.  Some states/provinces do not allow limitations on how long an implied warranty of
merchantability or fitness lasts, so the above limitations or exclusions may not apply to you.

Only Warranty

This written Limited Warranty is the only warranty made by the warrantor;  this warranty is in lieu of and excludes all other warranties,
express or implied.  The warrantor does not authorize any person to provide any other warranty or to assume for it any further obligation in
connection with the warranted product.

What is NOT Covered

1. Cabinets or cabinet pieces.
2. Normal maintenance items such as filters, fan belts, fuses or other consumable items.
3. Damage caused by misuse, failure to maintain properly, accidents or acts of God.
4. External wiring, piping, venting or attachment of accessory products not integral to our product, including without limitation,

humidifier, air cleaner, vent damper, thermostat or other mechanical devices not manufactured by the warrantor.

5. Products that have been operated in a corrosive atmosphere where a concentration of acids, halogenated hydrocarbons or

other corrosive elements causes deterioration to metal surfaces or integral components.  NOTE:  Operation in a corrosive
atmosphere is considered abuse and voids this warranty.

6. Products that have NOT been installed in accordance with our published installation instructions, applicable local, state/

provincial or national codes, ACCA published standards.

7. Products that have NOT been installed by competent, qualified installers.
8. Products that have been moved from their original place of installation.

Warranty on Replacement Components

Any replacement component furnished by us will assume the remaining (unused) portion of the Limited Warranty.

Consequential Damages

The warrantor shall not be responsible for any consequential damages caused by any defect in the product.  Some state/provinces do not
allow the exclusion or limitations of incidental or consequential damages, so the above limitation or exclusion may not apply to you.

This product must be installed, used and cared for in accordance with the instruction manual.  You are responsible for required periodic
maintenance or service, such as changing or cleaning of air filters and lubrication or cleaning of components.  Failure to properly install,
operate or maintain your unit voids this warranty.

Owner Record

Model # ________________________ Serial # _________________

Installation Date __________________

INSTALLED BY:

Dealer _____________________________________________________________________________________
Address ____________________________________________________________________________________
Telephone # ____________________________

License # _______________________________

Summary of Contents for SCU12M-024

Page 1: ...on and service performed by unqualified persons can result in property damage personal injury or death WARNING Risk of electrical shock Disconnect all remote power supplies before installing or servic...

Page 2: ...A B C 4 2 0 M 2 1 U C S n i 5 2 4 1 4 2 4 1 4 2 m m 5 3 6 6 1 6 6 1 6 0 3 0 M 2 1 U C S 6 3 0 M 2 1 U C S 2 4 0 M 2 1 U C S 8 4 0 M 2 1 U C S n i 3 3 4 1 2 3 4 1 4 2 m m 8 3 8 9 1 8 6 1 6 0 6 0 M 2 1...

Page 3: ...12M condensing units use R410A which is an ozone friendly HFC refrigerant This unit must be installed with a matching indoor coil and line set SCU12M units are designed for use in expansion valve TXV...

Page 4: ...SCU12M unit Field refrigerant piping consists of liquid and suction lines from the outdoor unit sweat connections to the indoor coil flare or sweat connections Flushing Existing Line Set and Indoor C...

Page 5: ...to flow back into the low side of the sys tem Disconnect the liquid and vapor lines from the existing outdoor unit 2 Remove the existing outdoor unit Set the new R410A unit and follow the brazing conn...

Page 6: ...that all of the R22 vapor is recovered Allow the recovery to pull a vacuum on the system NOTE A single system flush should remove all of the mineral oil from the existing refrigerant lines and indoor...

Page 7: ...using 4 Connect the external equalizer line to the equalizer port on the suction line splice 5 Strap the superheat sensing bulb to the suction header If installing an expansion valve on an indoor coil...

Page 8: ...r Suction Line Service Valve 1 Remove the stem cap with an adjustable wrench 2 Use a service wrench with a hex head extension to turn the stem clockwise to seat the valve Tighten it firmly 3 Replace t...

Page 9: ...s Check all joints for leaks Purge nitrogen and R410A mixture Correct any leaks and recheck IMPORTANT The leak detector must be capable of sensing HFC refrigerant Evacuation Evacuating the system of n...

Page 10: ...pen both manifold valves and start vacuum pump 5 Evacuate the line set and indoor unit to an absolute pressure of 23mm 23 000 microns of mercury approximately 1 in of mercury During the early stages o...

Page 11: ...he same digital thermometer used to check outdoor ambient temperature to check liquid line temperature Verify the unit charge using the approach method The difference between Refrigerant Charge Adjust...

Page 12: ...2 p m e T F e r u s s e r P g i s P 4 7 0 4 1 2 5 7 4 7 1 2 6 7 9 0 2 2 7 7 4 4 2 2 8 7 0 8 2 2 9 7 6 1 3 2 0 8 3 5 3 2 1 8 0 9 3 2 2 8 7 2 4 2 3 8 5 6 4 2 4 8 3 0 5 2 5 8 1 4 5 2 6 8 0 8 5 2 7 8 0 2...

Page 13: ...d installer or service agency At the beginning of each cooling season the system should be checked as follows 1 Clean and inspect condenser coil Coil may be flushed with a water hose Be sure the power...

Page 14: ...Page 14 504 910M 4 Check all wiring for loose connections 5 Check for correct voltage at unit with unit operating 6 Check amp draw on blower motor Unit nameplate _________ Actual _________...

Page 15: ...504 910M Page 15 Figure 7 Connection Diagram Part 534 638W...

Page 16: ...ligation in connection with the warranted product What is NOT Covered 1 Cabinets or cabinet pieces 2 Normal maintenance items such as filters fan belts fuses or other consumable items 3 Damage caused...

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