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Heat Pump Indoor Unit
INSTALLATION MANUAL
MODELS: B3/B4 Series
Type: Built - in Duct - Low Static
System
IMPORTANT
• Please read this installation manual completely before
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.
LG
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Related Manuals for LG Multi V B4 Series
Summary of Contents for LG Multi V B4 Series
- Page 1 System Heat Pump Indoor Unit INSTALLATION MANUAL MODELS: B3/B4 Series Type: Built - in Duct - Low Static IMPORTANT • Please read this installation manual completely before installing the product. • Installation work must be performed in accordance with the national wiring standards by authorized personnel only.
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Page 2: Table Of Contents
Ceiling Concealed Duct - Low Static Type Indoor Unit Installation Manual TABLE OF CONTENTS Required Parts Required Tools Installation Requirements Safety Precautions ....3 Introduction ......6 Installation Level gauge Four type "A" screws Screw driver Connecting cable Electric drill Selection of the best location Hole core drill ..........7 Pipes: Gas side... -
Page 3: Safety Precautions
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. Be sure to read before installing the air conditioner. Be sure to observe the cautions specified here as they include important items related to safety. Incorrect operation due to ignoring instruction will cause harm or damage. - Page 4 Safety Precautions Do not modify or extend the Do not let the air conditioner Be cautious when unpacking power cable. run for a long time when the and installing the product. humidity is very high and a door or a window is left open. •...
- Page 5 Safety Precautions Installation Always check for gas (refriger- Install the drain hose to ensure Keep level even when installing ant) leakage after installation or that water is drained away prop- the product. repair of product. erly. • Low refrigerant levels may cause •...
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Page 6: Introduction
Introduction Introduction Symbols Used in this Manual This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that could cause harm to the air conditioner. NOTICE This symbol indicates special notes. Features B3/B4 Series : Built-in Duct type Suction Grille Remote Controller Suction Grille + Suction Canvas... -
Page 7: Installation
Installation Installation Selection of the best location Indoor unit Install the air conditioner in the location that satisfies the fol- lowing conditions. Inspection hole • The place shall easily bear a load exceeding four times the (600 x 600) indoor unit’s weight. Control box •... -
Page 8: And Hanging Bolt Location
Installation B4: 1118 B3: 840 B3/B4: 295 (Ceiling opening) (Ceiling opening) Ceiling dimension and hanging bolt location Installation of Unit Install the unit above the ceiling correctly. CASE 1 POSITION OF SUSPENSION BOLT • Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. -
Page 9: Indoor Unit Installation
Installation Indoor Unit Installation • Select and mark the position for fixing bolts. • Insert the set anchor and washer onto the suspen- • Drill the hole for set anchor on the face of ceiling. sion bolts for locking the suspension bolts on the ceiling. -
Page 10: Part Name And Functions
Installation Part name and functions Air outlet Air outlet Suction Grille Suction Grille Suction Canvas • Buit-in duct type with Suction Grille. • Buit-in duct type with Suction Grille and Suction Canvas. B3/B4 Series : Built-in Duct type Control Box service Indoor Unit Indoor Unit... -
Page 11: Checking The Drainage
Installation INSULATION, OTHERS Insulate the joint and tubes completely. THERMAL INSULATION All thermal insulation must comply with local requirement. INDOOR UNIT Refrigerant pipe and thermal Union for gas pipe Thermal insulator for refrigerant pipe insulator(Local supply) (Local supply) Thermal insulator for piping(Local supply) Hose clip for thermal insulator (Local supply) - Page 12 Installation CAUTION 1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner. 2. Minimum thickness of the insulation for the connecting pipe shall be 19mm. Front of view • The unit must be horizontal or declined to the drain hose connected when finished installation.
- Page 13 Installation CAUTION : The supplied flexible drain Flexible drain hose Flexible drain hose Flexible drain hose hose should not be curved, neither 1/50~1/100 screwed. The curved or screwed hose MAX 700mm may cause a leakage of water. CAUTION: After the confirmation of the above conditions, prepare the wiring as follows: 1) Never fail to have an individual power specialized for the air conditioner.
- Page 14 Installation Install the remote control box and cord correctly. INSTALLATION OF REMOTE CONTROL BOX POINT OF REMOTE CONTROLLER INSTALLATION • Although the room temperature sensor is in the indoor unit, the remote control box should be installed in such places away from direct sunlight and high humidity. INSTALLATION OF THE REMOTE CONTROL BOX ROUTING OF THE REMOTE CONTROL CORD •...
- Page 15 Installation WIERED REMOTE CONTROLLER INSTALLATION • Since the room temperature sensor is in the remote controller, the remote controller box should be installed in a place away from direct sunlight, high humidity and direct supply of cold air to maintain proper space temperature. Install the remote controller about 5ft(1.5m) above the floor in an area with good air circulation at an average tempera- ture.
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Page 16: Two Thermistor System
Two Thermistor system Two Thermistor system • Open the rear cover of Remote Controller to set up the mode. • Selectable options are three as follows. Room Temp. Sensing Remo. Slide Switch1 - Remo: Sensing the room Temperature. Indoor Unit 2 TH(Remo.+Indoor) - Indoor Unit: Sensing the intake air into indoor Unit. -
Page 17: E.s.p.(External Static Pressure) Setting
E.S.P.(External Static Pressure) Setting E.S.P.(External Static Pressure) Setting Open the rear cover of the wired remote-controller to set the mode. Select one of three selectable modes as follows. Without Zone System 1. Position V-H, F-H: • This position sets the maximum E.S.P as a default set. 2. -
Page 18: How To Set E.s.p
How to Set E.S.P? How to Set E.S.P? Procedure of RPM change: Ex) External Static pressure is 4mmAq for Model Name "ARNU12GB3G1, ARNU24GB4G1" • To protect the unit, compressor is designed to be off during E.S.P. setting. Push the "On/Off" button. The unit will start. - Page 19 How to Set E.S.P? [Table.1] B3/B4 Series Static Pressure(mmAq) Model Name Step(Hi/Med/Lo) Setting Value 8.0CMM 6.5CMM 5.5CMM 9.0CMM 7.0CMM 6.0CMM 10.0CMM 8.0CMM 6.5CMM 14CMM 12CMM 10CMM 17CMM 15CMM 10CMM 1. Be sure to set the value refering table 1. Unexpected set value will cause mal-function. NOTICE 2.
- Page 20 Memo Indoor Unit Indoor Unit...