Lennox 2SCU13-18 Page 20 Installation And Maintenance Instructions Manual Download | Manualshive

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Summary of Contents for 2SCU13-18

Page 1: ...y glasses and gloves when installing this equipment WARNING Sharp metal edges can cause injury When installing the unit use care to avoid sharp edges WARNING Installation and servicing of air conditio...

Page 2: ...onents ensure the fasteners are appropriately tightened Table 1 shows torque values for fasteners Inspection of Shipment Upon receipt of equipment carefully inspect it for possible shipping damage If...

Page 3: ...or unit and thermostat except when required by the indoor thermostat Refer to thermostat installation instructions C common connection between indoor unit and outdoor unit required for proper operatio...

Page 4: ...ibration Line Set Isolation Illustrations on the following pages demonstrate procedures which ensure proper refrigerant line set isolation Figure 5 shows how to install line sets on horizontal runs Fi...

Page 5: ...in Armaflex Liquid Line Strap Liquid Line to Vapor Line Figure 5 To hang line set from joist or rafter use either metal strapping material or anchored heavy nylon wire ties Strapping Material around v...

Page 6: ...he 2SCU13 unit Place the supplied fixed orifice sticker on the indoor cabinet after installation Figure 8 shows how to install the replacement fixed orifice Do not twist distributor tubes when looseni...

Page 7: ...anifold gauge set that is equipped with low loss hoses Do not use a manifold gauge set with anything other than a low loss hose Liquid and Suction Line Service Valves The liquid line and suction line...

Page 8: ...nd indoor unit must be checked for leaks Using an Electronic Leak Detector 1 Connect the high pressure hose of the manifold gauge set to the suction valve service port Normally the high pressure hose...

Page 9: ...igerant to produce substances that corrode copper piping and compressor parts Use a thermocouple or thermistor electronic vacuum gauge that is calibrated in microns Use an instrument that reads down t...

Page 10: ...ion line service valve High pressure gauge to liquid line service valve 2 Close manifold gauge set valves Connect the center manifold hose to an upright cylinder of HCFC 22 3 Ifroomtemperatureisbelow7...

Page 11: ...ature according to the chart from the suction line temperature to determine the superheat 5 Compare the superheat value with those shown in Table 7 on page 12 If superheat is greater than shown add so...

Page 12: ...at the system is not properly charged or that a problem exists with some component in the system 6 Compare the approach value with those shown in Table 8 If the values to do not agree with those provi...

Page 13: ...1 Page 13 of 19 Issue 1140 Table 9 Normal Operating Pressures L Liquid S Suction Values provided above are typical pressures Indoor unit matchup indoor air quality and indoor load will cause pressures...

Page 14: ...k wiring for loose connections 5 Check for correct voltage at unit with unit operating 6 Check amp draw outdoor fan motor Unit Name Plate ________ Actual _________ NOTE If owner complains of insuffici...

Page 15: ...___________ Service Technician ________________________________________ Nameplate Voltage ______________ Rated Load Ampacity ________ Compressor _______________ Outdoor Fan ___________________ Maximum...

Page 16: ...NAL AND LOCAL CODES OUTDOOR FAN F C H 1 2 3 R S C C 2 3 1 EQUIPMENT GROUND HR1 L2 208 230 60 1 L1 K1 1 BLACK YELLOW RED RED C12 BLACK ORANGE B4 PURPLE K1 S4 S24 A4 C Y1 TO 24 VAC POWER SOURCE 20 VA MI...

Page 17: ...L2 L3 EQUIPMENT GROUND HR1 S40 K1 1 BLACK BLACK B1 BLACK ORANGE BLACK B4 C1 PURPLE RED 1 FOR USE WITH COPPER CONDUCTORS ONLY REFER TO UNIT RATING PLATE FOR MINIMUM CIRCUIT AMPACITY AND MAXIMUM OVERCUR...

Page 18: ...installation date and location if warranty claim c An accurate description of the problem 2 Call your local installing contractor 3 If the installing contractor is unable to provide warranty parts che...

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