Texas Furnaces 2ac12030-2, 2ac12036-2 Installation Guide

LG
Installation Instructions & Use and care
MANUAL
LG
website http://www.LG.ca
LG Central Air Conditioning Remote Condensing Unit
InstallationInstructions
These Instructions Should be carefully read and kept with the production for future reference
Attention Installer: System installer’s guide Check list (Page 11.) shall be completed as per instructions
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CONTENTS
INSTALLATION
SAFETY................................................................................................................................................................2
SHIPPING INSPECTION...............................................................................................................................
.......3
UNIT DIMENSIONS...............................................................................................................................
...............3
MINIMUM CLEARANCES...............................................................................................................................
.....3
INSTALLATION LOCATION...............................................................................................................................
.3
REMOVING EXISTING CONDENSING UNIT......................................................................................................3
REFRIGERANT HANDLING...............................................................................................................................
.4
LINE SET INSTALLATION...................................................................................................................................4
INSTALLATION....................................................................................................................................................5
METERING DEVICES...........................................................................................................................................5
BRAZING CONNECTIONS..................................................................................................................................5
LEAK JESTING....................................................................................................................................................5
EVACUATION.......................................................................................................................................................6
LINE SET REFRIGERANT(CHARGE) ADJUSTMENT AND RELEASE OF CHARGE ......................................7
ELECTRICAL........................................................................................................................................................7
CONDENSING UNIT WIRING DIAGRAM............................................................................................................8
SYSTEM START-UP / FINAL CHARGE ADJUSTMENT.....................................................................................8
FINAL CHARGE ADJUSTMENT..........................................................................................................................9
FOR TXV...............................................................................................................................................................9
FINAL CHECKS..................................................................................................................................................10
USE AND CARE
CARE AND MAINTENANCE..............................................................................................................................10
SYSTEM INSTALLER'S GUIDE - CHECK LIST................................................................................................11
USE AND CARE MANUAL ................................................................................................................................14
LIMITED WARRANTY........................................................................................................................................17
SAFETY
• Understand the following safety terms:
oDanger!- Identifies hazards that will result in personal injury or death. o Warning! - Identifies hazards that could result in personal injury or death. o Caution! - Identifies unsafe practices that will result in minor personal Injury, property damage, or
product damage.
• Read all installation instructions thoroughly prior to installing product.
• Warning! Always use disconnect switch to disconnect power to condensing unit prior to opening control box. Never locate disconnect switch on unit.
• Caution! Follow all local plumbing, electrical, and any other codes that may apply.
• Wear safety glasses and gloves.
• EPA requires all refrigerant to be recovered. Do not blow charge into atmosphere.
• Danger! Do not sniff or inhale refrigerant. Personal injury and death is possible.
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SHIPPING INSPECTION
This product was carefully inspected at the factory and released to the transportation company with no known damage. Inspect carton for damage to help locate potential areas of damage. Remove carton and inspect entire unit for damage. If damage is found, report it immediately to the carrier.
UNIT
DIM
ENSIONS
Physical Data, 12 SEER Models
12"
12" 6"
60"
SIDE VIEW
TOP VIEW
Fig. 1
C
BA
A B C
1.5 Ton 2421/32 2211/16 2711/16
2.0 Ton 2421/32 2211/16 2711/16
2.5 Ton 2421/32 2211/16 2711/16
3.0 Ton 2421/32 2211/16 2711/16
3.5 Ton 28 27
325/8
4.0 Ton 28 27
325/8
5.0 Ton
-
-
-
Table 1
MINIMUM CLEARANCES (SEE FIGURE 1)
• 30" clearance to service panel
• 6" clearance to one side of the unit.
• 12" clearance to two other sides of unit.
• 24" Clearance between two condensing units.
• 60" clearance above unit.
INSTALLATION LOCATION
•Away from windows
• Do not install under gas appliance vent
• At least 36" away from clothes dryer vent
• On a solid, level pad
• Isolated from the building structure (Avoid vibration transmission)
REMOVING EXISTING CONDENSING UNIT
Warning! Electrical shock can cause severe injury or death. Use disconnect switch to dis­connect power to unit.
Warning! Recover all refrigerant from prior unit to avoid personal injury or death.
REFRIGERANT LINE LENGTH (ft)
COND 0 - 24 25 - 49 50 - 85
UNIT Line Diameter (in. OD)
(TONS) Suct Liq Suct Liq Suct Liq
1.5 3/4" 3/8" 3/4" 3/8" 3/4" 3/8" 2 3/4" 3/8" 3/4" 3/8" 3/4" 3/8"
2.5 3/4" 3/8" 7/8" 3/8" 7/8" 1/2" 3 3/4" 3/8" 7/8" 3/8" 1-
1/8"1/2
"
3.5 7/8"3/8"1-1/8"3/8"1-1/8"1/2
"
4 7/8"3/8"1-1/8"3/8"1-1/8"1/2
"
5 7/8"3/8"1-1/8"3/8"1-1/8"1/2
"
Table 2
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REFRIGERANT HANDLING
Warning! Do not sniff or inhale refrigerant. Personal injury or death may occur.
Warning! Avoid contact with liquid refrigerant. Wear gloves and safety glasses to avoid frost-
bite and blindness.
Warning! Never apply flame to refrigerant cylinder. Possible explosion resulting in personal injury or death is possible.
Warning! Never fill a cylinder more than 80% full of liquid refrigerant.
• Always recover refrigerant. EPA requires all refrigerant to be recovered.
Warning! Always use EPA certified testing equipment and certified refrigerant tanks. Make sure tanks have passed a hydrostatic test performed in last 5 years.
Outdoor unit
Max. 50ft
Max. "X"ft
Indoor unit
Outdoor unit
Must be above top of
condenser coil
Gas line
at each 35ft
Oil trap
6"
Indoor unit
Liquid line
Must be above top of
condenser coil
L
INE SET INSTALLATION
Verify proper diameter sizes for liquid line and vapor lines.
Long line sets may require larger diameter vapor line
(See Table 2).
The maximum line set length is listed in Table 3. Refer to Figure 2 for dimension measurement.
The factory oil charge is sufficient for Max. length in table 3.
Caution! Same line sets may require longer than maximum. length listed in table 3, please contact your wholesaler or/and distributor before installation.
Indoor unit may be a maximum of 50 feet above out­door unit (See Figure 2).
For every 35 feet that the outdoor unit is above the indoor unit, an oil trap must be installed (See Figure 3).
Vapor line must be insulated (See Figure 4).
Insulate liquid line if ambient temperatures exceed 120˚F
Liquid and vapor lines must not make metal-to-metal
contact.
Avoid unnecessary turns.
Fig. 3
Fig. 2
Insulated vapor Line
Liquid Line
Tape
Sheet Metal Hanger
Incorrect
Correct
Fig. 4
COND UNIT LENGTH "X"
(TONS) IN FT MAX.
1.5 75 285
2.5 85 385
3.5 85 485 585
Table 3
5
INST
ALL
ATION
Set unit on pad with electrical control box close to house.
Bolt to pad if local codes require.
If installed on rooftop, unit must be securely mounted with vibration isolators to prevent vibration transmission.
METERING DEVICES
For piston (0rifice):
Indoor piston must be changed to required piston size provided with condensing unit. Piston size is listed on rating plate.
Piston is located between liquid line set and indoor coil distributor.
BRAZING CONNECTIONS
I. Ends of the refrigerant lines must be cut square, deburred, and cleaned.
2. Sweep refrigerant lines with Nitrogen or other inert gas.
3. Caution! Wrap service valve with wet rag to avoid overheating (It is recommended, to
removed the valve core prior to brazing).
4. Use a brazing alloy rod with minimum 2% silver.
5. After brazing, quench joint with water or wet rag and re-install vale core.
6. Re-install valve core, if removed.
3/4" & smaller vator line
on smaller lines, bulb may be mounted on top
do not mount bulb on bottom of line
7/8" & larger vator line
Bulb
vator Line
12
39
Fig. 5
For TXV:
Caution! Remove piston located between liq­uid line set and indoor coil distributor.
Screw TXV into distributor assembly.
Connect pressure equalizer tube w/ flare nut to indoor
coil pressure port.
Caution! Always make sure the suction line is cleaned before clamping the bulb in place.
On lines that are 3/4" O.D. or smaller, the bulb may be installed on top of the line or side mounted (pref­erably at the 10 or 2 o'clock position) (See Figure 5).
On lines that are 7/8" O.D. or larger, the remote bulb should be installed at 45˚ or at approximately the 4 or 8 o'clock position (See Figure 5).
Insulate temperature bulb with foam insulation.
Do not make direct contact with ductwork, floor joists, wall studs, walls, and plumbing.
Leave slack between building and unit to avoid vibration transmission.
Seal wall penetration with RTV or other suitable caulk.
Do not strap line set to joists with wire or strapping in direct contact.
Liquid line filter drier is factory-installed in unit.
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