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OWNER'S MANUAL
AIR CONDITIONER
Before beginning installation, read these instructions
carefully. This will simplify installation and ensure that the
product is installed correctly and safely. Leave these
instructions near the product after installation for future
reference.
ENGLISH
Cassette 1 way
MFL71974402
Rev.00_070523
Copyright © 2023 LG Electronics Inc. All Rights Reserved.
www.lg.com
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Related Manuals for LG 1 Way Cassette ZTUQ12GULA1
Summary of Contents for LG 1 Way Cassette ZTUQ12GULA1
- Page 1 This will simplify installation and ensure that the product is installed correctly and safely. Leave these instructions near the product after installation for future reference. ENGLISH Cassette 1 way www.lg.com MFL71974402 Rev.00_070523 Copyright © 2023 LG Electronics Inc. All Rights Reserved.
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Page 2: Table Of Contents
TABLE OF CONTENTS This manual may contain images or content that may be different from the model you purchased. This manual is subject to revision by the manufacturer. SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USE............3 WARNING ......................4 CAUTION ......................6 INSTALLATION Location Selection ....................9 Indoor Unit Installation...................14 Wiring Connection ...................21... -
Page 3: Safety Instructions
SAFETY INSTRUCTIONS SAFETY INSTRUCTIONS READ ALL INSTRUCTIONS BEFORE USE The following safety guidelines are intended to prevent unforeseen risks or damage from unsafe or incorrect operation of the appliance. The guidelines are separated into 'WARNING' and 'CAUTION' as described below. Safety Messages This symbol is displayed to indicate matters and operations that can cause risk. -
Page 4: Warning
SAFETY INSTRUCTIONS Notes for Flammable Refrigerant The following symbols are displayed on units. This symbol indicates that this appliance uses a flammable refrigerant. If the refrigerant is leaked and exposed to an external ignition source, there is a risk of fire. This symbol indicates that the Owner's Manual should be read carefully. - Page 5 SAFETY INSTRUCTIONS Installation • Always perform grounding. • Don't use a power cord, a plug or a loose socket which is damaged. • For installation of the product, always contact the service center or a professional installation agency. • Securely attach the electrical part cover of the indoor unit and the service panel of the outdoor unit are not attached securely, it could result in a fire or electric shock due to dust, water, etc.
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Page 6: Caution
SAFETY INSTRUCTIONS • Take the power plug out if necessary, holding the head of the plug and do not touch it with wet hands. • Do not use the power cord near the heating tools. • Do not open the suction inlet of the indoor/outdoor unit during operation. - Page 7 SAFETY INSTRUCTIONS • Do not install the unit in potentially explosive atmospheres. Operation • Avoid excessive cooling and perform ventilation sometimes. • Use a soft cloth to clean. Do not use wax, thinner, or a strong detergent. - The appearance of the air conditioner may deteriorate change color, or develop surface flaws.
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Page 8: Installation Location Selection
INSTALLATION INSTALLATION Location Selection - Annexed sheet Select the Best Location • There should not be any heat source or steam near the unit. • There should not be any obstacles to the air circulation. Packing corrugated cardboard on the •... - Page 9 INSTALLATION Installation Guide at the Seaside CAUTION • Air conditioners should not be installed in areas where corrosive gases, such as acid or alkaline gas, are produced. • Do not install the product where it could be exposed to sea wind (salty wind) directly. It can result corrosion on the product.
- Page 10 NOTE • If you can’t meet above guide line in the seaside installation, please contact LG electronics for the additional anticorrosion treatment. • Periodic (more than once/year) cleaning of the dust or salt particles stuck on the heat exchanger by...
- Page 11 INSTALLATION Required Floor Area for R32 Unit • The appliance must be installed, operated and stored in a room with a floor area larger than the minimum area. • Use the graph and table to determine the minimum area. • m : Total refrigerant amount in the system •...
- Page 12 INSTALLATION Floor Standing Wall Mounted Ceiling Mounted m (kg) m (kg) m (kg) 77.22 8.58 5.74 87.86 9.76 6.54 99.19 11.02 7.38 111.20 12.36 8.27 123.90 13.77 9.22 137.29 15.25 10.21 151.36 16.82 11.26 166.12 18.46 12.36 181.56 20.17 13.50 197.70 21.97 14.70...
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Page 13: Indoor Unit Installation
INSTALLATION Indoor Unit Installation NOTE The Indoor Unit Installation • Avoid the following installation location. • Select and mark the position for fixing bolts and piping hole. Such places as restaurants and kitchen where • Decide the position for fixing bolts slightly tilted considerable amount of oil steam and flour is to the drain direction after considering the generated. - Page 14 INSTALLATION • Hanging bolt - W3/8 or M10 Heat insulation material: Polyethylene foam with thickness more than 8 mm. • Nut - W3/8 or M10 • Spring washer - M10 • Plate washer - M10 Drill the piping hole on the wall slightly tilted to the outdoor side using a Ø70 hole core drill.
- Page 15 INSTALLATION Drain pan Drain port CAUTION • The supplied flexible drain hose should not be Flexible drain Main drain pipe strained. A strained hose may cause leakage of hose (accessory) water. Glue the joint Drain hose connection, Use the clip. (Accessory) Installation of Decoration Panel (Panel Type) The decoration panel has its installation direction.
- Page 16 INSTALLATION Install the air inlet panel (including the air filter) and side covers. CAUTION • Install certainly the decoration panel. Cool air leakage causes sweating. - Water drops fall.
- Page 17 INSTALLATION Installation of Decorative Panel Put the front panel's connection wires inside (Type 2) the bottom of the drain pan and pull them out towards the control box. Before installing the front panel, be sure to remove the air filter from the indoor unit. Remove the suction panel.
- Page 18 INSTALLATION display/suction panel connection wires to the housing inside the main PCB. Fastening: Connect the air direction control connection wire and the display connection wire to the intermediate connector For models with an intermediate connector, Color: Air direction control connector [white], fasten the connector fixing cover to the control PCB housing [white] Display connector[white], box cover, and insert the air filter back into the...
- Page 19 INSTALLATION More than 300 mm CAUTION More than 700 mm • Make sure that the suction panel's hooks are all More than 600 mm there and replace any missing hooks. Pipe length and the eleveation Model ZTUQ1 ZTUQ1 ZTUQ2 Push on the fixing hook to secure the suction 8GTLA 2GULA 4GTLA...
- Page 20 INSTALLATION Piping Length and the Elevation Height B Pipe size [mm (inch)] Length A (m) Addition Model refrigera Standar (g/m) Liquid Max. Max. ZTUQ12GULA1 Ø 9.52 (3/ Ø 6.35 (1/ Ø 12.7 (1/ Ø 6.35 (1/ ZTUQ18GTLA1 Ø 15.88 Ø 9.52 (3/ ZTUQ24GTLA1 (5/8) If installed tube is shorter than standard length, additional charging is not necessary.
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Page 21: Wiring Connection
INSTALLATION Wiring Connection Connecting Cable to the Indoor Unit Electrical Wiring Perform the electrical wiring work according to the electrical wiring connection. Circuit breaker detail • All wiring must comply with local requirements. • Select a power source that is capable of supplying the current required by the air conditioner. - Page 22 INSTALLATION The connecting cable connected to the indoor Connect same thickness wiring to both sides. and outdoor unit should be with the following specifications It is forbidden to It is forbidden to connect two to one connect wiring of Capacity (K Btu/h) 1 phase1 side.
- Page 23 INSTALLATION Connecting the Cable to Outdoor Unit Remove the side panel for wiring connection. Use the cord clamp to fix the cord. Earthing work • Connect the cable of diameter move to the earthing terminal provided in the control box and do not earthing.
- Page 24 INSTALLATION Model: ZTUQ24GTLA1...
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Page 25: Drain Piping
INSTALLATION Drain Piping in order to avoid dropping burrs into the tubing. Flare Work Main cause for gas leakage is due to defect of flaring work. Carry out correct flaring work in the following procedure. Cut the pipes and the cable Use the piping kit accessory or the pipes Point down purchased locally. - Page 26 INSTALLATION Even length all round Outside diameter [mm (inch)] Improper flaring Ø6.35 (1/4) 1.1 ~ 1.3 Inclined Surface damaged Ø9.52 (3/8) 1.5 ~ 1.7 Cracked Uneven Ø12.7 (1/2) 1.6 ~ 1.8 thickness Ø15.88 (5/8) 1.6 ~ 1.8 Ø19.05 (3/4) 1.9 ~ 2.1 Connecting Pipes to the Outdoor Unit Align the center of the pipings and sufficiently...
- Page 27 INSTALLATION Secure the tapped piping along the exterior Pipe size (mm/inch) Torque (N.m) wall using saddle or equivalent. 12.7 (1/2) 55.6 15.88 (5/8) 75.7 • When tighten the pipe, hold the haxagonal body. CAUTION • A brazed, welded, or mechanical connection shall be made before opening the valves to permit refrigerant to flow between the refrigerating system parts.
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Page 28: After Installation Installation Instructions
AFTER INSTALLATION AFTER INSTALLATION Installation Instructions How to Enter Installer Setting Mode Installer setting mode set the detail function of the remote controller. If the installer setting mode does not set correctly, it can cause problems to the product, user injury or property damage. - Page 29 AFTER INSTALLATION • The address display time and method can differ by the indoor unit type. Installer Setting Code Table Remote Controller Function Function Code Setting Value 0: Set to master Mode override 1: Set to slave 1: Standard 2: Low Ceiling height selection 3: High...
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Page 30: Leakage Test And Evacuation
AFTER INSTALLATION Leakage Test and Setting Address of Central Control Evacuation Leakage Test and Evacuation Press MODE and RESET button simultaneously. Air and moisture remaining in the refrigerant system have undesirable effects as indicated Press button for setting the indoor unit below. - Page 31 AFTER INSTALLATION • When the desired vacuum is reached, close the CAUTION "Lo and Hi" knob of the manifold valve and stop the vacuum pump. • To avoid nitrogen entering the refrigerant system in a liquid state, the top of the cylinder must be higher than its bottom when you pressurize the system.
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Page 32: Test Run
AFTER INSTALLATION Test Run Test Running • Precautions in test running - The initial power supply must provide at least 90 % of the rated voltage. Otherwise, the air conditioner should not be operated. CAUTION • For test run, carry out the cooling operation firstly even during heating season. If heating operation is carried out firstly, it leads to the trouble of compressor. - Page 33 AFTER INSTALLATION • Ensure the difference between the intake temperature and the discharge one is more than 8 °C. CAUTION • Never fail to have an individual power specialized for the air conditioner. As for the method of wiring, be guided by the circuit diagram pasted on the inside of control box cover.
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Page 34: Self-Diagnosis Function
AFTER INSTALLATION Self-Diagnosis Function Outdoor Unit Error LED 1 (Red) LED 2 (Green) Error code Description Indoor status DC peak (IPM fault) 2 times 1 time Max. CT (CT2) 2 times 2 times DC link low volt 2 times 3 times DC comp position error 2 times 6 times... - Page 35 AFTER INSTALLATION LED 1 (Red) LED 2 (Green) Error code Description Indoor status Communication error (Indoor ÷ 5 times 3 times Outdoor) EEPROM error (Outdoor) 6 times Cond. middle pipe high 6 times 1 time Heatsink error (High) 6 times 2 times Heatsink Th error (Open/Short) 6 times...