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Hitachi RAC-112SQB, Руководство по установке

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1

Hitachi

 

Split Unit Inverter Air Conditioner

 

Outdoor Unit

 

Installation Manual

 

This unit contains refrigerant inside. The quantity of refrigerant is adequate for pipes up to 30m long. If longer pipes are 
needed, add refrigerant onsite as necessary. As the quantity of refrigerant varies due to pipe length and model differences, 
please refer to the piping instructions for details. 

 

 

Applicable models 

RAC-112SQB RAC-125SQB

RAC-140SQB

RAC-160SQB 

■

 

Make sure to hand over this manual to workers of the next stage and finally to the customer. 
(Transportation and Handling) 

Æ

 (Ref. Piping Work) 

Æ

 (Electrical Wiring) 

Æ

 (Test Run) 

Æ

 (Customer) 

Introduction                                                                                                                                                   

●

 

This product is a general air-conditioner. Do not use for special purposes, such as food, animal and plant, precision 
machinery, and artwork storage. 

●

 

When installing at locations where medical instruments may generate electromagnetic wave, avoid causing malfunction of 
the air-conditioner.   

○

 

To prevent electromagnetic interference (EMI), do not point the electromagnetic wave emitting surface of medical 
instruments toward the electrical control panel, remote controller, and remote controller cable of the air-conditioner. 

○

 

To avoid EMI in the air, keep machinery generating electromagnetic wave, such as radios, at least 3 meters away from 
the air-conditioner. 

●

 

Do not place plants or animals directly under the airflow, as it is bad for them. 

●

 

As light will affect signal receiving of the remote control, keep the signal receiver at least one meter away from lights to 
ensure signal receiving of the wireless remote control. 

 
Temperature Ranges of Use 

Condition 

Function 

Indoor Unit Air Temperature 

 

Outdoor Unit Air Temperature 

 

Air-conditioning 

-5ºC DB to 43ºC DB 

21ºC DB /15ºC WB to 32ºC DB /23ºC WB 

DB: Dry-bulb temperature/WB: Wet-bulb temperature 

 

―

Contents

―

 

1. Safety 

Precautions 

................................................................................................................................................................... 2 

2. Handling ............................................................................................................................................................................... 3-4 

2-1 Accessories 

of 

the outdoor unit ..................................................................................................................................... 5 

2-2  Verification of the combined capacity of indoor and outdoor units .............................................................................. 5 
2-3 Outdoor 

unit 

installation ............................................................................................................................................. 5-7 

3. Piping 

...................................................................................................................................................................................... 8 

3-1  

Refrigerant 

pipe installation ..................................................................................................................................... 8-11 

3-2 Evacuation 

and 

refrigerant filling ................................................................................................................................ 11 

3-3  Pipe length DIP switch settings ................................................................................................................................... 12 
3-4 Refrigerant 

filling level................................................................................................................................................ 12 

3-5 Refrigerant 

recovering method .................................................................................................................................... 12 

4. Wiring 

.............................................................................................................................................................................. 13-15 

5. Test 

Run 

and Handover ......................................................................................................................................................... 16 

5-1 Test Run .................................................................................................................................................................. 16-17 
5-2 Menu 

setup .................................................................................................................................................................. 18 

6. Error 

Code 

............................................................................................................................................................................. 19

Before installation, 

please read this 

manual carefully 

and keep it properly.

66MP1382

●

 

Do not install at the following locations to prevent 

corrosion

:

           

 

○

  Coastal areas and locations with higher salinity. 

○

  Locations with high acidity or alkalinity. 

○

  Locations containing airborne grease (including grease from engine oil) and flammable gases. 

○

  Locations containing sulfur gas, such as hot springs. 

●

 

Do not install at the following locations: 

○

  Locations where there is flammable gas and airborne grease. There is a risk of fire and machine deformation, 

cor

rosion

, 

    

and

 damage.

Содержание RAC-112SQB

Страница 1: ...or animals directly under the airflow as it is bad for them As light will affect signal receiving of the remote control keep the signal receiver at least one meter away from lights to ensure signal receiving of the wireless remote control Temperature Ranges of Use Condition Function Indoor Unit Air Temperature Outdoor Unit Air Temperature Air conditioning 5ºC DB to 43ºC DB 21ºC DB 15ºC WB to 32ºC ...

Страница 2: ...lso always wear leather gloves before handling refrigerant to prevent frostbite of the hand or the body Clean up refrigerant with non flammable non toxic cleaning agents only Use of flammable cleaning agents may cause explosion or fire Ensure adequate ventilation when working in confined spaces to prevent oxygen insufficiency When cleaning agents are exposed to sparks at a high temperature toxic g...

Страница 3: ...ench y 2mm larger than the Φ12 7 or Φ15 88 wrenches for use on R410A pipes Not suitable for use on the pipes of currently used refrigerants For locking cap nuts y Φ6 35 and Φ9 53 wrenches can also be used Welder y Weld pipes as instructed flame adjustment welding temperature and choice of welding materials For welding refrigerant pipes Nitrogen y Strictly prevent dust from entry Following the nitr...

Страница 4: ...7 0 8 O 0 8 O 0 8 O Φ15 88 1 0 O 1 0 O 1 0 O Φ19 05 1 0 O 1 0 O 1 0 1 2H Φ22 2 1 2 O 1 15 O 1 0 1 2H Φ25 4 1 2 O 1 0 1 2H 1 0 1 2H Φ28 6 1 4 O 1 0 1 2H 1 0 1 2H Φ31 75 1 4 O 1 1 1 2H 1 1 1 2H Φ38 1 1 65 O 1 15 1 2H 1 35 1 2H Connector Selection The wall thickness of connectors elbows and tubing must be changed according to the design pressure change As 1 2H parts cannot be bend or expanded select ...

Страница 5: ...PSW3 switches on the mainboard of outdoor unit for three seconds 2 3 Outdoor unit installation 1 Installation space Retain maintenance space for the outdoor unit as shown below unit mm Standalone Standalone Standalone Two or More Units side by side No obstruction above No obstruction on sides and above Obstruction in front of the air outlet Even both sides are clear of obstruction maintain at leas...

Страница 6: ... Do not install the unit at locations where strong wind may blow off the roof or wall Secure the unit with steel wire if necessary 2 Add rubber cushions to the four legs of the unit stand 3 The location should be convenient for draining rainwater and condensate from defrosting For good drainage the outdoor unit should be installed in places with draining facilities When installing under roofs wher...

Страница 7: ...on A when using this type of anchor bolts Otherwise it will be difficult to remove the pipe cover 5 Securely fix the outdoor unit on the foundation to prevent collapse in a strong wind or an earthquake or noise due to loss of level leaning aside 6 When using ordinary frames whose legs are narrower than the legs of the outdoor unit add a board under the legs of the outdoor unit as shown in the figu...

Страница 8: ... When the outdoor unit is higher than the indoor unit 30 30 When the outdoor unit is lower than the indoor unit 20 20 2 Refrigerant pipe size Indoor unit Outdoor unit Capacity Level Refrigerant Pipe Size mm Gas Side Liquid Side 112 125 140 160 Φ15 88 Φ6 35 Φ9 53 Refrigerant Pipe Size mm Gas Side Liquid Side Φ15 88 Φ9 53 The diagram shows one outdoor unit with four indoor units In this example only...

Страница 9: ...ceptor valve on the pipe union Ⓐ in the right diagram of the gas interceptor valve Follow the instructions below Operation Air Conditioner Pipe union Ⓐ on the gas interceptor valve Low pressure Pipe union Ⓑ on the liquid interceptor valve Filling refrigerant after evacuation or repair Note After removing the filling hose prevent refrigerant and refrigeration oil from contaminating the electrical p...

Страница 10: ...ing the unit put back the pipe cover afterwards Wrap pipes with insulation sheets prepare on site before penetrating pipes through the cap hole to ensure it is seamless Make sure that there is adequate space for putting back the pipe cover Panel removal direction Rear piping Pipe cover Front piping Right piping Bottom piping cover y As shown in the left diagram pipes can be installed in four locat...

Страница 11: ...wards 5 Make sure to check leakage with a leakage detector and bubbles Do not use bubble liquids containing NH3 Recommended bubble liquids for the leakage test tabulated below Do not use general household detergents in the bubble test 2 Refrigeration filling 1 The unit has been equipped with refrigerant before shipping If pipes are longer than the design range add suitable amount of refrigerant on...

Страница 12: ...below W additional refrigerant L l x P L Pipe length l Standard pipe length 30m P Compensational value 60g m Example L 34m L l 34 30 4m Additional quantity of refrigerant W L l x P 4m x 60 g m 240g 3 Fill in the additional quantity of refrigerant W calculated in 2 3 5 Recovering Refrigerant Follow the steps below to recover refrigerant from the outdoor unit before relocating the indoor and or outd...

Страница 13: ...VVS KPEV S are used for connecting the operation circuit of the indoor and outdoor units earth with shielded wires Precautions for H LINK system connection y The factory setting of unit terminal impedance DSW5 1 ON is shown on the right diagram When more than two outdoor units are connected to the H LINK disabled the terminal impedance DSW5 1 OFF from the second outdoor unit onward Make sure that ...

Страница 14: ... Selection Determine the rated current of the ELCB based on the total wiring capacity shown in the right table Determine the ELCB model sensed current and trip current based on the information shown in the right table Use high sensitivity high speed trip time 0 1 second ELCB Confirm the ELCB rated current sensitivity and trip time and protective coordination of the upper part Rated Current A ELCB ...

Страница 15: ...ing the electrical panel for wiring or service to prevent electric shock Warning When installing the panel cover avoid jamming wires together to prevent electric shock and fire L1 1 L2 2 N Upper Right Panel Cover Earth cable Main power cable Operation circuit cable Keep an appropriate distance among terminals Insulate terminals with plastic tapes or bushings Plastic tapes or bushings Note Do not u...

Страница 16: ...ubleshooting in p 19 Contact a service technician for help if the situation persists When the operation light blinks every 2 seconds repeatedly this means there is a signal transfer error between the indoor unit and the remote control wires are loosened or disconnected broken incorrect wiring etc y A giggle sound also comes out from the mechanical chamber of the outdoor unit after compressor start...

Страница 17: ...igerant temperature Fluid pipe temperature ºC Compressor out temperature ºC 8 Refrigerant pressure Delivery pressure MPaG Intake pressure MPaG 9 Voltage Rated voltage V Operating voltage L1 N V L1 L2 V Start voltage V 10 Compressor input power and current Power kW Current A 11 Refrigerant filling level Correct Incorrect 12 Remote control functions Correct Incorrect 13 Protective device functions C...

Страница 18: ... Settings of each input terminal should be different The value of settings greater than the default value is invalid Not in use Not in use Heating Mode Operation Signal Cooling Mode Alarm Signal Stop Request Compressor ON Signal Force Stop Defrost Signal Current Control 60 Current Control 70 Current Control 80 Current Control 100 Input Setup 1 CN1 Code 1 2 Input Setup 2 CN1 Code 2 3 Input Setup 3 ...

Страница 19: ...t capacity mismatch Indoor unit capacity is 100 130 higher than the outdoor unit capacity 35 Indoor unit number setup error Repeated number setting or the number is greater than the connected number of indoor units 38 Protection check circuit error outdoor unit Error of the outdoor unit protection check circuit 41 Cooling overload high pressure switch activated When the outdoor unit protection act...

Страница 20: ...66MP1382 RAC AG C ...

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