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Refrigerant Line Sets:

 Transition From Vertical To Horizontal

Liquid Line

Vapor Line

Wrapped in

Armaflex

Strap Liquid Line

To Vapor Line

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 10

Outside Unit Placement and Installation

Install unit away from windows.

Two 90° elbows
installed in line set
will reduce line set
vibration.

Figure 11

Содержание HPXA15 SERIES

Страница 1: ...a qualified installer or service agency INSTALLATION INSTRUCTIONS HPXA15 SERIES UNITS HEAT PUMP UNITS 504 713M 02 04 Supersedes 12 02 Table of Contents HPXA15 Outdoor Unit 1 Shipping Packing List 1 G...

Страница 2: ...in 27 7 8 25 7 8 29 7 8 12 1 4 22 7 16 14 7 16 22 1 8 16 3 4 2 7 8 5 1 2 HPXA15 024 mm 708 657 759 311 570 367 562 425 730 140 HPXA15 030 in 30 7 8 32 1 8 34 1 16 12 3 4 26 5 8 18 5 8 28 1 8 17 1 4 3...

Страница 3: ...s 1 Place a sound absorbing material such as Isomode under the unit if it will be installed in a location or posi tion that will transmit sound or vibration to the living area or adjacent buildings 2...

Страница 4: ...y support the unit Consult local codes for rooftop applications If unit coil cannot be mounted away from prevailing winter winds a wind barrier should be constructed See figure 3 Size barrier at least...

Страница 5: ...eld wiring diagram NOTE A complete unit wiring diagram is located in side the unit control box cover 3 Install room thermostat ordered separately on an in side wall approximately in the center of the...

Страница 6: ...Corp 9351 L9 for proper size type and application of field fabricated lines Valve sizes are also listed in table 1 Refrigerant Connections HPXA15 Matched with New Indoor Coil and Line Set If an existi...

Страница 7: ...ure 9 shows how to install line sets on horizontal runs Figure 10 shows how to make a transi tion from horizontal to vertical Finally figure 11 shows how to place the outdoor unit and line set Refrige...

Страница 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...

Страница 9: ...e 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 10 Outsid...

Страница 10: ...Engineering Handbook for approved TXV match ups and application information Check expansion valves equipped with Chatleff fittings are available from Lennox Refer to the Engineering Handbook for appli...

Страница 11: ...ine valve Disconnect all power to the existing outdoor unit Re fer to gauges after shutdown to confirm that the valves are not allowing refrigerant to flow back into the low side of the system Disconn...

Страница 12: ...se at up to 800 psi of pressure with a 4000 psi burst rating Service Valves Access the liquid line and vapor line service valves figures 13 and 14 and gauge ports are used for leak testing eva cuating...

Страница 13: ...al injury WARNING Danger of explosion Can cause equipment damage injury or death When using a high pressure gas such as dry nitrogen to pressurize a refrigeration or air conditioning system use a regu...

Страница 14: ...set to 150 psig 1034 kPa and purge the hose Open the 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...

Страница 15: ...e 4 When the heating demand has been satisfied switch the thermostat to cooling mode with a set point of 68 F 20 C When pressures have stabilized use a digital thermometer to record the liquid line te...

Страница 16: ...lations Significant differences could mean that the system is not properly charged or that a problem exists with some component in the system Pressures higher than those listed indicate that the syste...

Страница 17: ...door Coil E t i Ai HPXA15 024 HPXA15 030 HPXA15 036 HPXA15 042 HPXA15 048 HPXA15 060 Entering Air Temp F C Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor Liquid Vapor 65 18 3 252 131...

Страница 18: ...506 5 43 125 0 74 214 0 105 340 5 136 512 9 44 127 3 75 217 4 106 345 3 137 519 3 45 129 7 76 220 9 107 350 1 138 525 8 46 132 2 77 224 4 108 355 0 139 532 4 47 134 6 78 228 0 109 360 0 140 539 0 48...

Страница 19: ...t control defrost relay time delay diagnostic LEDs and a terminal strip for field wiring connections See figure 17 The control provides automatic switching from normal heating operation to defrost mod...

Страница 20: ...The service light thermostat provides a signal which activates the room ther mostat service light during periods of inefficient operation Diagnostic LEDs The defrost board uses two LEDs for diagnosti...

Страница 21: ...re lubrication is needed 3 Adjust blower speed for cooling Measure the pressure drop over the coil to determine the correct blower CFM Refer to the unit information service manual for pressure drop ta...

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