Instruction/ maintenance manual of the product 2SCU13 Lennox International Inc.
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# 48283B006 Page 1 Save these instructions for future reference INST ALLA TION AND MAINTENANCE INSTRUCTIONS 2SCU13 Series S plit System Air Conditioner Sharp metal edges can cause injury .
Page 2 # 48283B006 INST ALLA TION Location of Unit Outdoor unit s operate under a wide range of weather conditions; therefore, multiple factors must be considered when positioning the unit. The unit must be positioned to give adequate clearances for sufficient airflow and servic- ing.
# 48283B006 Page 3 Figure 2 Slab Mounting 2° or 2" per 5' slope tolerance aw ay from b uilding str ucture. Discharge Air Mounting Slab Ground Le vel Building Structure Figure 3 Wind Barrier.
Page 4 # 48283B006 T able 2 Refrigerant Line Set Diameters (in.) For inst allations exceeding 5 0', cont act T echnical Services at (419) 483-4840. e n i L n o i t c u S H U T B e z i S d n a h t g n e L t e S e n i L . t f 2 1 . t f 5 2 . t f 0 5 .
# 48283B006 Page 5 Figure 6 T o hang line set from joist or rafter , use either metal strapping material or anchored heavy n ylon wire ties. Strapping Material (around vapor line only) 8 ’ 8 ’ T ape or Wire Tie Strap the v apor line to the joist or rafter at 8 intervals then str ap the liquid line to the vapor line .
Page 6 # 48283B006 Figure 8 Refrigerant Line Set s: Inst alling V ertical Runs (new construction shown) Outside W all W ood Block Between Studs IMPOR T ANT: Refrigerant lines must not contact wall.
# 48283B006 Page 7 T o install an expansion valve (see Figure 9): 1. Separate the distributor assembly and remove the piston orifice and used teflon seal. Insert nozzle end of Figure 9 Metering Device Inst allation the expansion valve along with a new teflon seal into the distributor and tighten to 20 – 30 ft.
Page 8 # 48283B006 T o Close Liquid or Suction Line Service V alve: 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. T ighten firmly . 3. Replace the stem cap.
# 48283B006 Page 9 5. Evacuate the line set and indoor unit to a minimum of 500 microns or lower . During the early stages of evacuation, it is desirable to close the manifold gauge valve at least once to determine if there is a rapid rise in pressure.
Page 10 # 48283B006 If the system is void of refrigerant, clean the system using the procedure described below . 1. Use dry nitrogen to pressurize the system and check for leaks. Repair leaks, if possible. 2. Evacuate the system to remove as much of the moisture as possible.
# 48283B006 Page 11 Charge Using Weigh-In Method (Fixed Orifice/TXV Systems) If the system is void of refrigerant, or if the outdoor ambient temperature is cool, first locate and repair any leaks then use the weigh-in method to charge the unit. 1. Recover the refrigerant from the unit.
Page 12 # 48283B006 Pressures higher than those listed indicate that the system is overcharged. Pressures lower than those listed indicate that the system is undercharged. V erify adjusted charge using the approach method. 4. Use the same digital thermometer to check liquid line temperature.
# 48283B006 Page 13 Normal Operating Pressures T able 9 l i o C r o o d t u O r i A g n i r e t n E e r u t a r e p m e T l e d o M 8 1 - 4 2 - 0 3 - 6 3 - 2 4 - 8 4 - 0 6 - L S L S L S L S L S L S L .
Page 14 # 48283B006 OPERA TION Outdoor unit and indoor blower cycle on demand from the room thermostat. When the thermost at blower switch is moved to the ON position, the indoor blower operates continuously . Maintenance and service must be performed by a quali- fied installer or service agency .
# 48283B006 Page 15 5. Check for correct voltage at unit (with unit operating). 6. Check amp-draw on blower motor . Unit nameplate _________ Actual _________ St art-Up and Performance Checklist Job Name _______________________________ Job No.
Page 16 # 48283B006 Figure 12 H C F 1 DESCRIPTION KEY COMPONENT A4 CONTROL - TIMED OFF B1 COMPRESSOR B4 MO TOR - OUTDOOR F AN C12 CAP ACIT OR - DU AL HR1 HEA TER - COMPRESSOR K1-1 CONT ACT OR - COMPRESSOR S4 SWITCH - HIGH PRESSURE S24 SWITCH - LOSS OF CHARGE FOR USE WITH COPPER CONDUCT ORS ONL Y .
# 48283B006 Page 17 Figure 13 Three Phase Wiring Diagram P/N 48436-001 B4 OUTDOOR FA N C1 OUTDOOR F AN CAP ACIT OR A4 TIMED OFF CONTROL (IF USED) PURPLE BLACK ORANGE BLACK BLACK RED T3 T2 T1 BLACK L3 .
Page 18 # 48283B006 Limited Warranty August 1, 1997 This warranty gives you specific legal rights and you may have other rights which vary from state/province to st ate/province. W arrantor: Armstrong Air Conditioning Inc., 421 Monroe St., Bellevue, OH 4481 1 Armstrong Air Conditioning Inc.
An important point after buying a device Lennox International Inc. 2SCU13 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lennox International Inc. 2SCU13 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lennox International Inc. 2SCU13 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lennox International Inc. 2SCU13 you will learn all the available features of the product, as well as information on its operation. The information that you get Lennox International Inc. 2SCU13 will certainly help you make a decision on the purchase.
If you already are a holder of Lennox International Inc. 2SCU13, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lennox International Inc. 2SCU13.
However, one of the most important roles played by the user manual is to help in solving problems with Lennox International Inc. 2SCU13. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lennox International Inc. 2SCU13 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
