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03/06

505,128M

*2P0306*

*P505128M*

Page 1

2006 Lennox Industries Inc.

Dallas, Texas, USA

WARNING

Improper installation, adjustment, alteration, ser-
vice or maintenance can cause personal injury, loss
of life, or damage to property.

Installation and service must be performed by a
qualified installer or service agency.

IMPORTANT

The Clean Air Act of 1990 bans the intentional vent-
ing of refrigerant (CFC’s and HCFC’s) as of July 1,
1992. Approved methods of recovery, recycling or
reclaiming must be followed. Fines and/or incar-
ceration may be levied for noncompliance.

WARNING

This product and/or the indoor unit it is matched
with may contain fiberglass wool.

Disturbing the insulation during installation, main-
tenance, or repair will expose you to fiberglass wool
dust. Breathing this may cause lung cancer. (Fiber-
glass wool is known to the State of California to
cause cancer.)

Fiberglass wool may also cause respiratory, skin,
and eye irritation.

To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown below, or contact
your supervisor.

Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379−9900

INSTALLATION
INSTRUCTIONS

10ACE

 

Series Units

CONDENSER UNITS

505,128M
03/06
Supersedes 01/06

Table of Contents

10ACE Outdoor Units

1

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Shipping & Packing List

1

. . . . . . . . . . . . . . . . . . . . . . . . 

General Information

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Unit Dimensions

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Setting the Unit

2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Electrical

3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Refrigerant Piping

4

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Refrigerant Metering Devices

4

. . . . . . . . . . . . . . . . . . . 

Manifold Gauge Set

5

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

Service Valves

5

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Leak Testing

6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Evacuation

6

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Start−Up

7

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Refrigerant Charging

8

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

System Operation

10

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Maintenance

10

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Optional Accessories

11

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Start−Up & Performance Check List

11

. . . . . . . . . . . . . . 

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

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.

10ACE Outdoor Units

Lennox Merit

®

 10ACE outdoor units are designed for use

in either fixed orifice or expansion valve (TXV) systems.
The TXV may require a field−installed hard start kit. Refer
to the Lennox Engineering Handbook for expansion valve
kits which must be ordered separately.

Shipping & Packing List

1 − Assembled outdoor unit
1 − Fixed orifice refrigerant metering device

Check the unit for shipping damage. Consult last carrier
immediately if damage is found.

Litho U.S.A.

Summary of Contents for 10ACE Series

Page 1: ...ox Industries Inc P O Box 799900 Dallas TX 75379 9900 INSTALLATION INSTRUCTIONS 10ACE Series Units CONDENSER UNITS 505 128M 03 06 Supersedes 01 06 Table of Contents 10ACE Outdoor Units 1 Shipping Pack...

Page 2: ...16 24 1 4 565 048 33 838 32 1 4 819 24 1 4 616 060 33 940 32 1 4 921 24 1 4 718 General Information These instructions are intended as a general guide and do not supersede national or local codes in a...

Page 3: ...l installation instructions for additional wiring application diagrams and refer to unit nameplate for minimum circuit ampacity and maximum overcurrent protection size 1 Install line voltage power sup...

Page 4: ...es square free from nicks or dents Debur the ends The pipe must remain round do not pinch end of the line 2 Wrap a wet cloth around the valve body and copper tube stub to protect it from heat damage d...

Page 5: ...he stem cap Tighten finger tight then torque per table 1 Page 2 To Close Front Seated Service Valves 1 Remove the stem cap with an adjustable wrench 2 Use a service wrench with a hex head extension 3...

Page 6: ...valve on the high side of the manifold gauge set which will pressurize line set and indoor unit 7 After a few minutes open a refrigerant port to ensure the refrigerant you added is adequate to be det...

Page 7: ...ig positive pressure in the line set and indoor unit Close manifold gauge valves and shut off the HCFC 22 cylinder and remove the manifold gauge set Start Up IMPORTANT If unit is equipped with crankca...

Page 8: ...iate charging procedure Charge Using Weigh in Method Fixed Orifice TXV Systems Outdoor Temp 65 F 18 C If the system is void of refrigerant or if the outdoor ambient temperature is cool use the weigh i...

Page 9: ...eratures 4 Check the liquid line temperature The difference be tween the ambient and liquid temperatures should match values given in table 6 Loss of charge results in low capacity and efficiency 5 If...

Page 10: ...ight out to extract the push pins along one side of the coil If necessary remove the push pins along the back of the unit it is usually unnecessary to fully re move the inner mesh screen Drape the mes...

Page 11: ...cklist Job Name Job no Date Job Location City State Installer City State Unit Model No Serial No Service Technician Nameplate Voltage Rated Load Ampacity Compressor Outdoor Fan Maximum Fuse or Circuit...

Page 12: ......

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