Table of Contents
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E2006 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
WARNING
Improper installation, adjustment, alteration, ser-
vice or maintenance can cause property damage,
personal injury or loss of life. Installation and ser-
vice must be performed by a qualified installer or
service agency.
CAUTION
Physical contact with metal edges and corners
while applying excessive force or rapid motion can
result in personal injury. Be aware of, and use
caution when working near these areas during
installation or while servicing this equipment.
IMPORTANT
This unit must be matched with an indoor coil as
specified in Lennox' Engineering Handbook.
Coils previously charged with HCFC−22 must be
flushed.
IMPORTANT
The Clean Air Act of 1990 bans the intentional vent-
ing of refrigerant (CFC's, HCFC's AND HFC's) as of
July 1, 1992. Approved methods of recovery, recycl-
ing or reclaiming must be followed. Fines and/or in-
carceration may be levied for noncompliance.
07/06
*2P0706*
INSTALLATION
INSTRUCTIONS
HSXA16 Series Units
CONDENSING UNITS
504,953M
07/06
Supersedes 03/06
Table of Contents
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HSXA16 Outdoor Unit
Two−stage HSXA16 outdoor units use HFC−410A refriger-
ant. This unit must be installed with a matching indoor coil
and line set as outlined in the Lennox Engineering Hand-
®
book. Elite
Series HSXA16 outdoor units are designed for
use in thermostatic expansion valve (TXV) systems only
and are not for use with other refrigerant flow control de-
vices. The Lennox Engineering Handbook lists a TXV kit
that must be ordered separately.
Shipping & Packing List
1 − Assembled HSXA16 outdoor unit
2 − Grommets (liquid and vapor line)
1 − Bushing (for low voltage wiring)
Check equipment for shipping damage. If you find any
damage, immediately contact the last carrier.
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504,953M
*P504953M*
Litho U.S.A.
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Table of Contents
Related Manuals for Lennox HSXA16-024
Summary of Contents for Lennox HSXA16-024
-
Page 1: Table Of Contents
Two−stage HSXA16 outdoor units use HFC−410A refriger- IMPORTANT ant. This unit must be installed with a matching indoor coil and line set as outlined in the Lennox Engineering Hand- ® book. Elite Series HSXA16 outdoor units are designed for... -
Page 2: General Information
Gauge port seal cap 8 ft.− lb. 11 NM your supervisor. Sheet metal screws 16 in.− lb. 2 NM Lennox Industries Inc. Machine screws #10 28 in.− lb. 3 NM P.O. Box 799900 Dallas, TX 75379−9900 Compressor bolts 90 in.− lb. -
Page 3: Setting The Unit
Setting the Unit Electrical Refer to unit dimensions for sizing mounting slab, plat- WARNING forms or supports. See figure 1 for installation clearances. Electric Shock Hazard. Installation Clearances Can cause injury or death. Unit must be grounded in accordance NOTE − A service access clearance of 30"... - Page 4 3. Install room thermostat (ordered separately) on an in- NOTE − For proper voltages, select thermostat wire side wall approximately in the center of the conditioned gauge per the following chart: area and 5 feet (1.5 m) from the floor. It should not be Wire run length AWG # Insulation type...
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Page 5: Refrigerant Piping
Field refrigerant piping consists of liquid and vapor lines Outside Unit Placement and Installation from the outdoor unit (sweat connections) to the indoor coil (flare or sweat connections). Use Lennox L15 (sweat, non- flare) series line sets as shown in table 2 or use field-fabri- Install unit away from windows and cated refrigerant lines. - Page 6 Refrigerant Line Sets: Installing Horizontal Runs To hang line set from joist or rafter, WIRE TIE use either metal strapping material (Around vapor line only) or anchored heavy nylon wire ties. 8 feet STRAPPING MATERIAL (Around vapor line only) FLOOR JOIST OR ROOF RAFTER TAPE OR WIRE TIE 8 feet...
- Page 7 Refrigerant Line Sets: Installing Vertical Runs (new construction shown) NOTE − Similar installation practices should be used if line set is to be installed on exterior of outside wall. IMPORTANT - Refrigerant OUTSIDE WALL VAPOR LINE LIQUID LINE lines must not contact wall. WOOD BLOCK BETWEEN STUDS WIRE TIE...
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Page 8: Refrigerant Metering Device
Take care to empty all existing traps. Polyol When the low side system pressures reach 0 psig, ester (POE) oils are used in Lennox units charged close the vapor line valve. with HFC−410A refrigerant. Residual mineral oil Disconnect all power to the existing outdoor unit. -
Page 9: Manifold Gauge Set
Flushing Connections Inverted HCFC−22 Cylin- (Contains clean HCFC−22 to be used for flushing) High Pressure Pressure HSXA16 Vapor Line UNIT EXISTING VAPOR LINE Service Valve GAUGE MANIFOLD EXISTING INDOOR COIL Opened Closed EXISTING LIQUID LINE Liquid Line Service Valve Tank Return NOTE −... -
Page 10: Service Valves
Service Valves Front-Seated Liquid Line Service Valve (Valve Shown Closed) SERVICE The liquid line and vapor line service valves and gauge PORT Insert hex wrench here ports are used for leak testing, evacuating, charging and checking charge. Each valve is equipped with a service port which has a factory−installed Schrader valve. -
Page 11: Leak Testing
set in order to pressurize the line set and the indoor Leak Testing coil. After the line set has been connected to the indoor and out- 6. After a few minutes, open a refrigerant port to check door units, the line set connections and indoor unit must be that an adequate amount of refrigerant has been add- checked for leaks. -
Page 12: Start−Up
This system is charged with HFC−410A refrigerant which WARNING operates at much higher pressures than HCFC−22. This unit is NOT approved for use with coils which include me- Danger of Equipment Damage. Avoid deep vacu- tering orifices or capillary tubes. um operation. - Page 13 3. Set the room thermostat to call for heat. This will refrigerant from the system to increase the approach create the necessary load for properly charging the temperature. Be aware of the HFC−410A refrigerant system in the cooling cycle. cylinder. It will be light maroon−colored. Refrigerant should be added through the vapor valve in the liquid 4.
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Page 14: System Operation
A filter drier is factory−installed in each HSXA16 unit to en- *Four−sided unit shown. sure a clean, moisture−free system. A replacement drier is available from Lennox. Refer to Lennox Repair Part Pro- Figure 13 gram. Page 14... -
Page 15: Maintenance
Before the start of each heating and cooling season, the 1. Ask your Lennox dealer to show you where your indoor following service checks should be performed by a quali- unit’s filter is located. -
Page 16: Thermostat Operation
Programmable Thermostats The outdoor coil may require frequent cleaning Your Lennox system controlled (depending on environmental conditions). Clean programmable thermostat. These thermostats provide the the outdoor coils with an unpressurized water added feature of programmable time-of-day setpoints for hose to remove surface contaminants and debris.