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Page 19

HSXA12 Check Points

Start−up and Performance Check List

Job Name

Job Location
Installer

Unit Model No.

Nameplate Voltage

Rated Load Ampacity

Maximum Fuse or Circuit Breaker

Refrigerant Lines:

Service Valves Fully Opened?

Outdoor Fan Checked?

Job No.

City

Serial No.

Date

State

Service Technician

Compressor

Outdoor Fan

Indoor Filter Clean?

Electrical Connections Tight?

Supply Voltage (Unit Off)

Vapor Pressure

Thermostat

Refrigerant Charge Checked?

Calibrated?

Properly Set?

Level?

Properly Insulated?

Voltage With Compressor Operating

Leak Checked?

Service Valve Caps Tight?

Indoor Blower RPM

Outdoor Coil Entering Air Temp.

Discharge Pressure

S.P. Drop Over Indoor (Dry)

Содержание HSXA12-018

Страница 1: ...fied in Lennox Engineering Handbook Coils previously charged with R22 must be flushed INSTALLATION INSTRUCTIONS HSXA12 Series Units CONDENSING UNITS 504 540M 04 04 Supersedes 12 03 Table of Contents H...

Страница 2: ...KIT 4 Field Installed 4 3 8 111 6 3 8 162 6 3 8 162 Top View Base Section 2 51 3 4 19 4 3 8 111 4 3 8 111 4 3 8 111 4 3 8 111 4 3 8 111 COMPRESSOR COIL DRAIN OUTLETS Around perimeter of base OPTIONAL...

Страница 3: ...the surface of the roof Care must be taken to ensure weight of unit is properly distributed over roof joists and rafters Either red wood or steel supports are recommended Electrical In the U S A wiri...

Страница 4: ...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...

Страница 5: ...ft 50 ft 4 6 m 15 m 042 048 3 8 in 10 mm 7 8 in 22 mm 3 8 in 10 mm 7 8 in 22 mm L15 65 15 ft 50 ft 4 6 m 15 m 060 3 8 in 10 mm 1 1 8 in 29 mm 3 8 in 10 mm 1 1 8 in 29 mm Field Fabricated NOTE Units ar...

Страница 6: ...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...

Страница 7: ...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...

Страница 8: ...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 7 Outsid...

Страница 9: ...on device Do not leave the filter drier uncapped for more than 10 to 15 minutes prior to brazing evacuation and leak testing Polyol ester oils used in this system absorb mois ture quickly Failure to i...

Страница 10: ...it Set the new R410A unit and follow the brazing connection procedure which begins on the previous page to make line set connections DO NOT install the provided fixed ori fice yet Make low voltage and...

Страница 11: ...n instructions and the Lennox Engineering Handbook for approved TXV and fixed orifice match ups and application information Table 1 lists the unit liquid and vapor line sizes and corresponding line se...

Страница 12: ...a 5 16 extension for vapor line sizes 3 Replace the stem cap Tighten finger tight then tighten an additional 1 6 turn To Close Service Valve 1 Remove the stem cap with an adjustable wrench 2 Use a se...

Страница 13: ...ve on the R410A cylinder and the valve on the high pressure side of the manifold gauge set Disconnect R410A cylinder 4 Connect a cylinder of nitrogen with a pressure regulat ing valve to the center po...

Страница 14: ...der of R410A refrigerant Open the manifold gauge valves to break the vacuum from 1 to 2 psig positive pressure in the line set and indoor unit Close manifold gauge valves and shut off the R410A cylind...

Страница 15: ...e the necessary load for properly charging the system in the cooling cycle 3 Use a digital thermometer to record the outdoor ambi ent temperature 4 When the heating demand has been satisfied switch th...

Страница 16: ...144 565 9 52 147 4 83 246 5 114 385 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...

Страница 17: ...in the liquid state Some R410A cylinders are equipped with a dip tube which allows you to draw liquid refrigerant from the bottom of the cylin der without turning the cylinder upside down The cylinder...

Страница 18: ...nnect switch es Unit may have multiple power supplies Maintenance and service must be performed by a qualified installer or service agency At the beginning of each cooling season the system should be...

Страница 19: ...n Checked Job No City City Serial No Date State State Service Technician Compressor Outdoor Fan Indoor Filter Clean Electrical Connections Tight Supply Voltage Unit Off Vapor Pressure Thermostat Refri...

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