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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.
■ Make sure to hand over this manual to workers of the next stage and finally to the customer.
(Transportation and Handling)
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.
● 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.
○ 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 to prevent corrosion:
○ Coastal areas and locations with higher salinity.
○ Locations with high acidity or alkalinity.
● 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
Air-conditioning
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
Split Unit Inverter Air Conditioner
Outdoor Unit
Applicable models
RAC-112SQB
RAC-125SQB
(Ref. Piping Work)
Indoor Unit Air Temperature
-5ºC DB to 43ºC DB
Hitachi
RAC-140SQB
(Electrical Wiring)
Outdoor Unit Air Temperature
21ºC DB /15ºC WB to 32ºC DB /23ºC WB
DB: Dry-bulb temperature/WB: Wet-bulb temperature
-Contents-
1
Before installation,
please read this
manual carefully
and keep it properly.
RAC-160SQB
(Test Run)
(Customer)
66MP1382
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Table of Contents
Related Manuals for Hitachi RAC-112SQB
Summary of Contents for Hitachi RAC-112SQB
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Page 1: Table Of Contents
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 ■... -
Page 2: Safety Precautions
● Do not climb on the air-conditioner or put objects on it to prevent collapse or overturning, which may cause injury. ● Make sure that no refrigerant leaks. Although Hitachi uses non-flammable, non-toxic, and odorless safety refrigerant (HFC), when HFC leaks and comes in contact with sparks, toxic gas produces. Also, as HFC has a higher mass than air, it will cause oxygen insufficiency near the floor. -
Page 3: Handling
An item preceded by a box is a check item. After examining the item, check it 2. Handling When handling an outdoor unit, carry it to the installation location in its original packing, if possible. (1) Before Installation This unit uses HFC refrigerant (R410A) that does not damage the ozone layer. 1) As the pressure of new refrigerant R410A is 1.4 times higher than ordinary refrigerants, it is more easily affected by water, oxides, grease, and other impurities. - Page 4 3) Use special parts for R410A in piping and connection. Both the cap nut and pipe flare are different, choose the correct type according to the specifications below. Unit: mm Flare Size Flare Size Pipe Diameter Size -0.4 dΦ R407C/R22 R410A 6.35 9.53...
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Page 5: Accessories Of The Outdoor Unit
□1) Select the quantity and capacity of indoor units for outdoor units as shown below. Indoor Unit Outdoor Unit Maximum Number of Combined Capacity Indoor Unit RAC-112SQB RAC-125SQB 100-110% RAC-140SQB RAC-160SQB □2) Attention This unit will not operate in the first four hours after power connection. The error code will be “d1-22”. - Page 6 (Unit: mm) Two or More Units Two or More Units Two or More Units Two or More Units (over and under) (over and under) (side by side and over and under) (side by side and over and under) No obstruction on sides Obstruction in front of the No obstruction on sides and Obstruction in front of the air...
- Page 7 4) Example of fixing the stand with anchor bolts: Make sure to cut off section A when using this type of anchor bolts. Otherwise, it will be difficult to remove the pipe cover. Unit: mm Model RAC-112SQB RAC-125SQB RAC-140SQB RAC-160SQB Anchor bolt Concrete ※...
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Page 8: Piping
In this example, only one refrigerant pipe is used. In actual installation, however, separate pipes should be used for refrigerant and refrigeration oil. Outdoor unit model RAC-112SQB RAC-125/140/160SQB Total pipe length: L When the outdoor unit is Max. lapse height between the higher than the indoor unit. - Page 9 (2) Precautions for installing refrigerant pipes (example) Make sure the pipe is free of water and dust inside. Cut the pipe with a copper pipe cutter. Remove dust and impurities inside the pipe with nitrogen or compression air before installation. (Do not use a saw or whetstone that may cause powder.) □...
- Page 10 (3) Pipe removal direction As shown in the left diagram, pipes can be installed in four locations. Remove the cover where the pipe is installed and Upper right Panel removal install the pipe through the rear cover. direction hole. Break the cover with a screwdriver and remove it.
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Page 11: Evacuation And Refrigerant Filling
□(4) Pipe connection and insulation 1) Make sure the interceptor valve of the outdoor unit is completely shut. Remark: Prepare refrigeration oil on-site. 2) Connect the pipes between the indoor unit and the outdoor unit. When locking pipefittings, Supplier: JX Nippon Oil & Energy coat refrigeration oil on the interior and exterior edges of the flare and lock the fitting with two Corporation wrenches at the specified torque. -
Page 12: Pipe Length Dip Switch Settings
□3-3 Pipe Length DIP Switch (DSW) Settings Adjust DSW2 settings as shown below when the refrigerant pipe is under 5m or over 30m. DSW2 (pipe length and auxiliary function setup) Change settings when the refrigerant pipe is under 5m or over 30m Factory Settings Pipe is under 5m Pipe is over 30m... -
Page 13: Wiring
4. Wiring (1) Electrical work Ask a qualified agent (electrician) to carry out electrical work with reference to national electrical regulations. □1) Wiring with 1Φ230VAC. Select wire gauge according to the following guidelines. There are two ways of wiring: 1. From the outdoor unit (Method B). 2. - Page 14 500mA. The trip time of both types must be within 0.1 second. 2. Use high-frequency ELCBs for inverter use. ● Select transformers according to the instructions below. Transformer Capacity≧Maximum Wattage ×1.3 Determine maximum wattage as shown below: Type RAC-112SQB RAC-125/140/160SQB Max. Current (A)
- Page 15 (2) Wiring connection port □1) Please assemble the indoor unit wiring connection port according to the indoor unit installation manual instruction. Precautions for Wiring Upper Right Panel Cover Keep an appropriate distance among Cable Tie terminals. Insulate terminals with plastic tapes or bushings.
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Page 16: Test Run And Handover
5. Test Run and Handover 5-1 Test Run Precautions for Test Running 1) Check insulation impedance between electrical terminals and earth with a 500V insulation tester. Impedance must be over 1MΩ. Re-check insulation impedance if it is below 1MΩ. 2) Make sure the interceptor valve of the outdoor unit is fully open before test run. 3) As the main switch is open phase, the alarm code on the remote control is “05”... - Page 17 Test Run Checklist Customer Name: Seller: Check Date: dd/MM/YY Customer Address: Checked by: Outdoor Unit Type: Outdoor Unit No. (YY/MM) ( / ) Compressor No. Indoor Unit Type Indoor Unit No. Indoor Unit Type Indoor Unit No. Check items: 1. Indoor unit fan direction Correct/Incorrect 2.
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Page 18: Menu Setup
Menu setup Menu setup Run menu setup after the outdoor unit stops. Do not run setup during operation, in the check mode, and external I/O setup. Heating Temp. Factory Settings Sensor: OFF Fan runs PSW1 interchangeable intermittently Start DSW2-5 is ON DSW1-4 is ON Night Mode Factory Settings... -
Page 19: Error Code
6. Error Code Table 1) When “EE” appears, this means there is a critical error; the compressor is probably blown. Code Error Cause Indoor unit protective device activation The float switch is activated when (1) abnormal high water level of the (float switch) condensate tank or (2) there are pipe abnormalities. - Page 20 66MP1382 RAC-AG-C...