LG AK-C3608H00 Installation Manual Download Page 26 | Manualshive

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26

INSTALLATION OF THERMOSTAT

ENGLISH

WARNING

!

Refer to equipment manufacturer’s instructions for specific system wiring information.

After wiring, see INSTALLER MENU for proper thermostat configuration.

Wiring table shown are for typical systems and describe the thermostat terminal functions.

Wiring will change when dedicated emergency heat is on (See Installer menu #15).

WIRING

Terminal Designations

Terminal Function

RC

Power (24V) - Cooling

RH

Power (24V) - Heating

O/B

6 (not shown) - 3 wire zone valve

Reversing Valve or output for 3 wire zone valves
Configurable as “O” or “B” Reversing Valve or 3
wire zone heat (power close)

Y

1st Stage Compressor

G

Fan Relay

W/E

1st Stage Heat (conventional);1st Stage Auxiliary
Heat (heat pump) Can operate as Emergency Heat
only (See Installer Menu #15)

C

Common wire for 24V (optional with batteries)

L

Heat Pump Malfunction / Diagnostic terminal (input
signal requires common)

Y2

2nd Stage compressor

W2

2nd Stage Heat (Conventional)2nd Stage Auxiliary
Heat (Heat Pump) Can operate as 1st Stage Auxiliary
Heat (See Installer Menu #15)

Leveling Thermostat

Leveling is for appearance only and

will not affect thermostat operation.

Thermostat Installation

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Summary of Contents for AK-C3608H00

Page 1: ...re installing the product Installation work must be performed in accordance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thoroughly www lg com Copyright 2022 LG Electronics Inc All Rights Reserved MFL71887801 Rev 01_032522 ENGLISH ...

Page 2: ...r receipt to this page in case you need it to prove the date of purchase or for warranty purposes Write the model number and the serial number here Model number Serial number You can find them on a label on the side of each unit Dealer s name Date of purchase Here are some tips that will help you minimize the power consumption when you use the air conditioner You can use your air conditioner more ...

Page 3: ...nstructions in this manual can result in equipment malfunction property damage personal injury and or death Installation Do not use a defective or underrated circuit breaker Use this appliance on a dedicated circuit There is risk of fire or electric shock For electrical work contact the dealer seller a qualified electrician or an Authorized Service Center Do not disassemble or repair the product T...

Page 4: ...iciency could occur When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on Do not use the telephone or turn switches on or off There is risk of explosion or fire If strange sounds smell or smoke comes from product Turn the circuit breaker off or disconnect the power supply cable There is risk of electric shock or fire Stop operation and close the win...

Page 5: ...n particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation Do not let the air conditioner run for a long time when the humidity is very high and a door or a window is left open Moisture may condense and wet or damage furniture Do not install the unit in potentially explosive atmospheres Operation Do not expose the skin directly to cool air for long...

Page 6: ...ic Wiring 17 MAINTENANCE INSTRUCTIONS 17 Airflow Adjustment 17 Crankcase Heater 17 Cleaning of Coils Filters 18 Belt Tension Testing Procedure instruction 18 Belt Tension Testing Procedure 19 Preventive maintenance schedule 20 TROUBLE SHOOTING 24 INSTALLATION OF THERMOSTAT 24 INDEX 25 Specifications 26 Thermostat Installation 28 Installer Menu 29 Test Equipment 30 USING THE THERMOSTAT 30 Thermosta...

Page 7: ...ltimate indoor comfort but also to guarantee long trouble free operations Here lies the reason for the choice of only the highest quality components and design strategist to meet the most important objective such as Efficiency Reliability Flexibility Easy Installation Serviceability Affordability INTRODUCTION ...

Page 8: ...nt on condenser coil HEX Hydrophilic coating on Evaporator HEX IP 55 Class F for Blower Motor Electric Heater Overload External protection for Blower Motor Anti Ice thermostat Copper Fins for Evaporator Condenser coil Stainless Steel Drain Pan Filter Differential pressure Switch Overload External Protection for Compressor Compressor Alternating Switch Hour Run Meter Fan Cycling Switch Rotolock Com...

Page 9: ...nit contains an operating charge of Refrigerant as shipped S NO LEGENDS 1 Cond Fan Motor Grill 2 Condensor Coil 3 Compressor 4 Supply Air Opening 5 Control Panel Access 6 Compressor Access 7 Supply Air Blower 8 Evaporator Coil 9 Pre Filter 10 Blower Motor 11 Blower Coil Access 12 Filter Access DIMENSIONAL DATA TOP VIEW FRONT VIEW RHS VIEW SUPPLY AIR RETURN AIR LHS VIEW Unit mm ...

Page 10: ...anty terms against any manufacturer defect Should you encounter any problem that falls under the warranty terms Safety Issues When performing any task pertaining to the installation and maintenance of the unit the skilled technician should observe all the applicable safety measures wear of safety helmet boots gloves and goggles Use of proper handling materials for brazing and use of wet cloth for ...

Page 11: ... Size of unit for an installation should be based on a heat gain calculation made according to applicable standards Units must also be installed in accordance with regulations of the National Fire Protection Association and local electrical codes Where local regulations conflicts with the instructions in this manual installer should adhere to local standards Prepare your concrete pad or steel stan...

Page 12: ...ion pads i e on rubber mounting pads 5 Availability of electric power 6 To position the unit for unrestricted air circulation of the condenser air inlet and to prevent any possibility of air recirculation from the condenser fan discharge air see figure on next page 7 Check minimum clearances required for your unit with regard to walls or other obstructions see figure on next page 8 Air cooled equi...

Page 13: ...INSTALLATION OF UNIT 13 ENGLISH NOTE All dimensions are in mm 1 500 1 500 1 500 3 000 Installation Clearance Straight Wall Corner Wall ...

Page 14: ...ckage should match the required CFM corresponding external static pressure LIFT LIFT Compressor End Spreader bar Proper clearance to be provided Must be 2 nominal pipe thru unit for slings to avoid base damage All panels should be in place when rigging CAUTION NOTE Avoid abrupt changes in size and or direction of duct to ensure proper unit performance Rigging Instructions Attention to riggers Inse...

Page 15: ...e heater must be energized for 12 hours before operating the system Otherwise compressor damage may result Pump Down Control If the unit is provided with pumpdown system then a solenoid type valve is installed in the liquid line ahead of expansion valve to prevent flow of refrigerant into the evaporator during off cycle The controller is wired to solenoid valve which energize in cooling and openin...

Page 16: ...een power source and the unit as shown below CAUTION The power cord connected to the outdoor unit Main Power supply cable should be complied with the following specifications Cable type approved by HAR or SAA Select the wire size based on the MCA CAUTION Use round crimp style terminals for connecting wires to the terminal block Electric wire Round crimp style terminal Attach insulation sleeve WARN...

Page 17: ...ow for further adjustment Crankcase Heater Periodic checking for proper operation or crankcase heater is highly recommended as follows a Check continuity of the heater using multimeter device b Check grounding of the heater by Meggar device to prevent electrical hazards c Observe whether the heater is warming down the compressor near the oil sump Cleaning of Coils Filters Turn off the power supply...

Page 18: ...Measure the Belt span as shown 2 Divide belt span by 64 to get belt deflection needed to check tension 3 Set large 0 ring on span scale at required belt deflection This scale is in 1 16 increments 4 Set small 0 ring at zero on the Force Scale plunger 5 Place the larger end of the tension checker squarely on one belt at the center of the belt span Apply force on the plunger until the bottom of the ...

Page 19: ...ment of pulleys X Clean drain pan drain pipe X Clean blower wheel X Check for loose bolts screws tighten as necessary X Check all electrical controls components wiring terminals tec for sparks over heat loose connections repair or correct X Check for rusted paint X Check all temperature pressure readings as applicable and satisfy the operation performance X Run test all motors and check the ampera...

Page 20: ... contactor Blower running but with not enough supply air 1 Loose Belt 2 Variable pulley wide open 3 Return air obsturcted 4 High static pressure 5 Improper pulley selection 6 Closed dampers improper air balance 7 Dirty filter 8 Dirty cooling coil 1 Adjust it check belt tension 2 Adjust the pitch of the pulley 3 Check and remove the obstructions 4 Verify static pressure and fan performance data 5 C...

Page 21: ...n 2 Loose belt 3 Variable pulley wiely open 4 Dirty filter 5 Dirty cooling coil 6 Return air restricted 7 Improper expansion valve bulb installation location 8 Restriction in expansion valve filter dryer 1 Check for gas leak charge freon as required 2 Adjust it Check belt tension 3 Adjust the pulley 4 Clean it 5 Clean it 6 Check return air girlle sizes etc against design 7 Verify and correct it 8 ...

Page 22: ...the reason and correct it refer to symptom for cooling coil ice up 6 Verify the reason and correct it refer to symptom for blower works less air Not sufficiently cooling during daytime 1 High discharge pressure 2 High thermostat setting 3 Serving large area 4 Less air quantity 5 High ambient condition 6 Dirty condenser 1 Check and verify the reason for high discharge pressure refer to symptom for ...

Page 23: ... Unit too close to the slab wall openings 5 Duct design high static 6 Wooden packing beneath the compressor is not removed 1 Check and correct it 2 Check and correct it 3 Verify the reason of noisy unit correct it 4 Verify the design Relocate the unit if necessary 5 Check verify the design 6 Remove wooden packing if any Compressor not working 1 Low voltage 2 Single phase failure 3 Bunred wirings 4...

Page 24: ... Installation 2 4 Wiring 2 Installer Menu 3 4 Test Equipment 4 Using the Thermostat 5 7 Thermostat Overview 5 User Menu 6 Thermostat Operation 6 Troubleshooting 7 8 Homeowner Help Line 8 Thermostat Applications Maximum Stages Heat Cool Conventional Gas Oil Electric mV and 24V Heat only Cool only or Heat Cool Systems 2 2 Heat Pump Air Source or Geothermal with Aux Heat 4 2 INDEX INSTALLATION OF THE...

Page 25: ...aining mercury Electrical Rating Battery Power mV to 30 VAC NEC Class II 50 60 Hz Input Hardwire 20 to 30 VAC NEC Class II 50 60 Hz Terminal Load 1 5 A per terminal 2 5A maximum all terminals combined Setpoint Range 45 to 99 F 7 to 37 C Rated Differentials 6 F Hr Fast Med Slow Heat Conventional Gas Oil Elect 0 5 F 0 75 F 1 9 F Cool Central Air 0 9 F 1 2 F 1 7 F Heat Pump Heat and Cool 0 9 F 1 2 F ...

Page 26: ...e zone valve Reversing Valve or output for 3 wire zone valves Configurable as O or B Reversing Valve or 3 wire zone heat power close Y 1st Stage Compressor G Fan Relay W E 1st Stage Heat conventional 1st Stage Auxiliary Heat heat pump Can operate as Emergency Heat only See Installer Menu 15 C Common wire for 24V optional with batteries L Heat Pump Malfunction Diagnostic terminal input signal requi...

Page 27: ...used Battery Location Premium AA alkaline batteries are required when C wire is not available When C wire is available the batteries provide a back up source of power this will maintain the clock in the event of a power outage To prevent compressor and or property damage if the outdoor temperature is below 50 F DO NOT operate the cooling system Do not allow the compressor to run unless the compres...

Page 28: ...urn on MEd SLO slow MEd medium FAS fast 50 Compressor Lockout protects the compressor from short cycling OFF On 5 minute delay OFF no delay 65 Max Heat Limit maximum set point for heat mode 99 47 to 99 66 Minimum Cool Limit minimum set point for cool mode 45 45 to 97 79 Fahrenheit or Celsius F F Fahrenheit C Celsius 81 Temperature Display Adjustment adjust the displayed Room Temperature 0 5 to 5 8...

Page 29: ... and runs auxiliary only heat 2 Press to adjust thermostat setting to 1 above room temperature The auxiliary heating system should begin to operate and the thermostat will indicate Heat On Aux 3 Press to adjust thermostat setting 1 below room temperature The auxiliary heating system should stop operating and the Heat On Aux icon will disappear Cooling System 1 Press the system button to select the...

Page 30: ...rmostat is protecting the equipment from short cycling 5 minute delay 5 Raises Temperature Setting 12 Indicates that the system is running in Cool Heat or Auxiliary mode Heat Pump Only The auxiliary will run in Heat mode when the heat pump cannot maintain the set temperature 6 Access Menu Options 13 SEE TROUBLESHOOTING 7 Lowers Temperature Setting 14 Battery status indicator 15 Replace battery ind...

Page 31: ... turn Off press and hold and the Menu button for 3 seconds User s Menu Press Menu button and release Description Default Setting flashing icons Settings Press or 01 Fahrenheit or Celsius F F Fahrenheit C Celsius 02 Temperature Display Adjustment adjust the Room Temperature 0 5 to 5 03 Continuous Display Light keep the backlight always on C wire required OFF On always on OFF momentarily 04 Auto Cha...

Page 32: ... or thermostat requires replacement 1 Set thermostat to Heat 2 Verify thermostat and system wires are securely attached 3 Diagnostic Set System to Heat and raise the setpoint above room temperature Within five minutes the thermostat should make a soft click sound and Heat On should appear on display This sound indicates the thermostat is operating properly If the thermostat does not click try the ...

Page 33: ...ore frequently but runs for a shorter time If you would like to increase cycle time choose SLO for slow cycle in the Installer menu Reference menu items 30 32 35 If an acceptable cycle rate is not achieved contact your HVAC service person Call for Service icon appears on displayed 1 Heating system is not able to heat the space to within 10 degrees of the setpoint within 2 hours 2 Cooling system is...

Page 34: ... along the fins stroke the coil surface with a soft bristled brush Keep all vegetation away from the condenser coil area Routine Maintenance By Owner Is the outdoor unit fan and indoor blower operating correctly with proper rotation and without undue noise Have voltage and running currents been checked to determine if it is within limits Have the air discharge grilles been adjusted to balance the ...

Page 35: ...s For cleaning 3 Safety Controls For mechanical cleaning 4 Electrical components and wiring For possible replacement or connection tightness 5 Condensate drain For cleaning 6 Inspect the unit duct connections to ensure they are physically sound and sealed to the unit casing 7 Inspect the unit mounting support to see that it is sound 8 Inspect the unit to ensure there is no obvious deterioration To...

Page 36: ...ng enough like concrete to prevent the sea wind from the sea The height and width should be more than 150 of the outdoor unit It should be keep more than 70 cm of space between outdoor unit and the windbreak for easy air flow 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...

Page 37: ...hr 7 81 7 80 7 81 Power Factor T3 0 90 0 90 0 90 Max Allowable Presssure Mpa 4 48 4 48 4 48 Excessive Operating Pressure Discharge Mpa 4 48 4 48 4 48 Excessive Operating Pressure Suction Mpa 1 5 1 5 1 5 Dimensions W H D 2 150 2 400 3 945 mm 2 150 2 400 3 945 mm 2 150 2 400 3 945 mm Unit Weight Kg 2 150 2 340 2 480 Model AK C3609H00 Brand LG Electronics Inc Country of origin Bahrain Type Packaged V...

Page 38: ...ENGLISH 38 ...

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