Lennox XP13-018 Service Literature
Xp13 series units
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Also See for XP13-018:
- Brochure & specs (4 pages) ,
- Installation instructions manual (26 pages) ,
- Installation instructions manual (24 pages)
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Service Literature
The XP13 is a high efficiency residential split−system heat
pump unit, which features a scroll compressor and R−410A
refrigerant. XP13 units are available in sizes ranging from 1
1/2 through 5 tons. The series is designed for use with an
indoor unit with an expansion valve approved for R−410A.
This manual is divided into sections which discuss the ma-
jor components, refrigerant system, charging procedure,
maintenance and operation sequence.
Information contained in this manual is intended for use by
qualified service technicians only. All specifications are
subject to change.
IMPORTANT
Operating pressures of this R−410A unit are higher
than pressures in R−22 units. Always use service
equipment rated for R−410A.
WARNING
Warranty will be voided if covered equipment is re-
moved from original installation site. Warranty will
not cover damage or defect resulting from:
Flood, wind, lightning, or installation and opera-
tion in a corrosive atmosphere (chlorine, fluorine,
salt, recycled waste water, urine, fertilizers, or oth-
er damaging chemicals).
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, person-
al injury or loss of life. Installation and service must
be performed by a qualified installer or service
agency.
WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at discon-
nect switch(es). Unit may have multiple
power supplies.
Corp. 0528−L10
Revised 05−2008
XP13 SERIES UNITS
Specifications / Electrical
VII Brazing Procedure
Page 1
TABLE OF CONTENTS
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©2005 Lennox Industries Inc.
XP13
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Summary of Contents for Lennox XP13-018
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Page 1: Table Of Contents
....Page 14 nect switch(es). Unit may have multiple power supplies. VIII Wiring Diagram ....Page 15 ©2005 Lennox Industries Inc. Page 1... - Page 2 SPECIFICATIONS General Model No. XP13−018 XP13−024 XP13−030 XP13−036 XP13−037 XP13−042 XP13−048 XP13−060 Data Nominal Tonnage Connections Liquid line (o.d.) − in. (sweat) Vapor line (o.d.) 1−1/8 Refrigerant R−410A charge furnished 8 lbs. 7 lbs. 7 lbs. 10 lbs. 10 lbs. 11 lbs.
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Page 3: I Unit Information
GROUNDING (A108) All major components (indoor blower and coil) must be matched according to Lennox recommendations for the compressor to be covered under warranty. Refer to the En- gineering Handbook for approved system matchups. A misapplied system will cause erratic operation and can re- sult in early compressor failure. - Page 4 2 − Dual Capacitor C12 ry−installed to provide a 60−minute defrost interval. If the timing selector jumper is not in place, the control defaults The compressor and fan in XP13 series units use permanent to a 90−minute defrost interval. The maximum defrost pe- split capacitor motors.
- Page 5 The liquid is worked toward the cen- ter of the scroll and is discharged. If the compressor is re- placed, conventional Lennox cleanup practices must be used. SUCTION Due to its efficiency, the scroll compressor is capable of draw- ing a much deeper vacuum than reciprocating compres- sors.
- Page 6 SUCTION SUCTION INTERMEDIATE PRESSURE ORBITING SCROLL CRESCENT SHAPED GAS POCKET STATIONARY SCROLL SUCTION POCKET FLANKS SEALED BY CENTRIFUGAL SUCTION SUCTION FORCE MOVEMENT OF ORBIT DISCHARGE HIGH PRESSURE GAS POCKET FIGURE 8 C − Outdoor Fan Motor Remove All units use single−phase PSC fan motors which require a run screws capacitor.
- Page 7 The switch is normally closed and is permanently adjusted to be taken to determine if excessive moisture has been trip (open) at 590 + 15 psi. introduced to the oil. Table 2 lists kits available from Lennox to check POE oils. An auto-reset, single-pole/single-throw low pressure If oil sample taken from a system that has been exposed to switch is located in the suction line.
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Page 8: Refrigerant System
III − REFRIGERANT SYSTEM Refer to figure 11 and 12 for refrigerant flow in the heat- ing and cooling modes. The reversing valve is energized during cooling demand and during defrost. XP13 COOLING CYCLE (SHOWING MANIFOLD GAUGE CONNECTIONS) OUTDOOR UNIT DISTRIBUTOR COIL SENSOR REVERSING VALVE... - Page 9 Field refrigerant piping consists of liquid and vapor lines To Close Service Valve: from the outdoor unit (sweat connections). Use Lennox L15 (sweat) series line sets as shown in table 3. 1 − Remove the stem cap with an adjustable wrench.
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Page 10: Charging
The ball valve is equipped with a service port with a factory− WARNING installed Schrader valve. A service port cap protects the Schrader valve from contamination and assures a leak−free Danger of explosion! seal. When using a high pressure gas such as dry nitrogen to pressurize a refriger- Ball Valve (Valve Open) ant or air conditioning system, use a... - Page 11 8 − Reconnect the manifold gauge to the vacuum pump, IMPORTANT turn the pump on, and continue to evacuate the line set and indoor unit until the absolute pressure does not rise Use a thermocouple or thermistor electronic vacuum above 500 microns (29.9 inches of mercury) within a gauge that is calibrated in microns.
- Page 12 TABLE 4 Charge Using the Approach Method Outdoor Temperature > 65ºF (18ºC) R−410A Temperature (°F) − Pressure (Psig) The following procedure is intended as a general guide and °F Psig °F Psig °F Psig °F Psig is for use on expansion valve systems only. For best results, indoor temperature should be 70°F (21°C) to 80°F (26°C).
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Page 13: Service And Recovery
TABLE 7 XP13 Normal Operating Pressures Model −018 −024 −024−2 −030 −036 −037 −042 −048 −060 Values below are typical pressures; indoor unit match up, indoor air quality equipment, and indoor load will cause the pressures to vary. Temp ºF (ºC)* Liquid Line Pressure / Vapor Line Pressure Cooling Operation 65 (18) -
Page 14: Maintenance
VI − MAINTENANCE VII − BRAZING In order to maintain the warranty on this equipment, the Before brazing remove access panels and any piping pan- XP13 system must be serviced annually and a record of els to avoid burning off paint. Be aware of any components service maintained. -
Page 15: Wiring Diagram
VIII − WIRING DIAGRAM AND SEQUENCE OF OPERATION Page 15... - Page 16 XP13 OPERATING SEQUENCE This is the sequence of operation for XP13 series units. The DEFROST MODE: sequence is outlined by numbered steps which correspond 7 − When a defrost cycle is initiated, the control ener- to circled numbers on the adjacent diagram. gizes the reversing valve solenoid and turns off the NOTE−...