Lennox HSXA15 SERIES Installation Instructions Manual Download Page 5

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Page 5

Outdoor Unit

Field Wiring Diagra

YELLOW

(LEADLESS)

Figure 4

Thermostat Designations

Thermostat

Indoor Unit

Outdoor Unit

Y1 Outdoor Unit

C Outdoor Unit

power

heat

cooling

indoor blower

common

NOTE − see unit wiring diagram for

power supply connections.

NOTE − If the indoor unit is not equipped with blower relay. It must be field−provided and installed (P−8−3251 or equivalent).

Figure 5

Summary of Contents for HSXA15 SERIES

Page 1: ...matched with an indoor coil as specified in Lennox Engineering Handbook Coils previously charged with HCFC 22 must be flushed INSTALLATION INSTRUCTIONS HSXA15 SERIES UNITS CONDENSING UNITS 504 668M 0...

Page 2: ...SXA15 024 in 27 7 8 25 7 8 29 7 8 12 1 4 22 7 16 14 7 16 22 1 8 2 7 8 5 1 2 HSXA15 024 mm 708 657 759 311 570 367 562 73 140 HSXA15 030 HSXA15 036 in 30 7 8 32 1 8 34 1 16 12 3 4 26 5 8 18 5 8 28 1 8...

Page 3: ...t avoid accidental contact with sharp edges Refer to unit dimensions for sizing mounting slab plat forms or supports Refer to figure 2 for installation clear ances 36 914 mm 36 914 mm 36 914 mm 36 914...

Page 4: ...CEC Refer to the furnace or blower coil installation instructions for additional wiring application diagrams and refer to unit nameplate for minimum circuit ampacity and maximum overcurrent protectio...

Page 5: ...W Y G C Thermostat Indoor Unit Outdoor Unit Y1 Outdoor Unit C Outdoor Unit power heat cooling indoor blower common NOTE see unit wiring diagram for power supply connections NOTE If the indoor unit is...

Page 6: ...fty feet 15 m For applications longer than fifty feet consult the Lennox Refrig erant Piping Guide Corp 9351 L9 Select line set diameters from table 1 to ensure that oil returns to the compressor Inst...

Page 7: ...id Line IMPORTANT Refrigerant lines must not contact structure Outside Wall Inside Wall Liquid Line Vapor Line IMPORTANT Refrigerant lines must not contact wall Wood Block Between Studs Strap Sleeve W...

Page 8: ...ire Tie Wire Tie around vapor line only Floor Joist or Roof Rafter Tape or Wire Tie Strap the vapor line to the joist or rafter at 8 ft intervals then strap the liquid line to the vapor line To hang l...

Page 9: ...ne Metal Sleeve Anchored Heavy Nylon Wire Tie Automotive Muffler Type Hanger Wall Stud Wall Stud Liquid Line Vapor Line Wrapped in Armaflex Strap Liquid Line To Vapor Line Metal Sleeve Figure 8 Outsid...

Page 10: ...ls used in this system absorb mois ture quickly Failure to install the filter drier will void the warranty Flushing Existing Line Set Indoor Coil IMPORTANT If this unit is being matched with an approv...

Page 11: ...ice or thermal expansion valve before continuing with flush ing procedures The existing devices are not ap proved for use with R410A refrigerant and may pre vent proper flushing Use a field provided f...

Page 12: ...or use with R410A refrigerant in the liquid line at the indoor coil Refrigerant Metering Devices Use HSXA15 units in TXV systems systems See the Len nox Engineering Handbook for approved TXV match ups...

Page 13: ...ning system Oxygen will explode on contact with oil and could cause personal injury WARNING Danger of explosion Can cause equipment damage injury or death When using a high pressure gas such as dry ni...

Page 14: ...he manifold gauge valves to break the vacuum in the line set and indoor unit Close the manifold gauge valves WARNING Danger of Equipment Damage Avoid deep vacuum operation Do not use com pressors to e...

Page 15: ...he colder months The method of charging is deter mined by the unit s refrigerant metering device and the outdoor ambient temperature Measure the liquid line temperature and the outdoor ambi ent temper...

Page 16: ...quid Line Temp Outdoor Ambient F C HSXA15 024 8 1 4 5 5 HSXA15 030 8 1 4 5 5 HSXA15 036 6 1 3 3 5 HSXA15 042 9 1 5 5 HSXA15 048 8 1 4 5 5 HSXA15 060 12 1 6 7 5 NOTE For best results the same electroni...

Page 17: ...14 385 4 145 572 8 53 150 1 84 250 3 115 390 7 146 579 8 54 152 8 85 254 1 116 396 0 147 586 8 55 155 5 86 258 0 117 401 3 148 593 8 56 158 2 87 262 0 118 406 7 149 601 0 57 161 0 88 266 0 119 412 2 1...

Page 18: ...necessary 2 Check connecting lines and coils for evidence of oil leaks 3 Check condensate line and clean if necessary Indoor Unit 1 Clean or change filters 2 Adjust blower speed for cooling Measure t...