Panasonic Urban Multi MX1 Series Manual
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Panasonic Urban Multi MX1 Series Manual

Panasonic Urban Multi MX1 Series Manual

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PACD011001G2 / PACD011004G3
1. General ...................................................................................................3
2. Points to Bear in Mind at the System Design..........................................6
3. Installation 1 ..........................................................................................11
4. Installation 2 ..........................................................................................57
5. Caution for Refrigerant Leaks ...............................................................67
6. Hand Over to Customer ........................................................................70
7. Bad Examples and Good Examples in Installation ...............................71
8. Appendix (Check Points in Installing UM Series) ..................................80
Urban Multi Inverter "MX1" Series
Inverter "MX1" Series
1.2 The Installation is of Vital Importance ......................................................5
3.1 Step by Step Installation Procedure .......................................................11
and Points to be Borne in Mind ..............................................................12
4.1 Field Settings..........................................................................................57
4.2 Setting Modes ........................................................................................59
5.1 Caution for Refrigerant Leaks ................................................................67
6.1 Operational Steps...................................................................................70
(all model)...............................................................................................71
7.3 Example 3: Drain pipe trap shape defective...........................................73
during air tight test (all model) ................................................................74
incorrect angling of Line branch pipes....................................................75
thermal expansion and contraction ........................................................76
the outdoor unit is too close to a high voltage wire. ...............................77
(MX1 Series). .........................................................................................78
from the central remote controller. .........................................................79
8.1 Operating Noise of Indoor Units .............................................................80
8.2 Procedures for Rigging Refrigerant Piping .............................................83
for the Inverter MX1 Series ....................................................................87
8.4 Locating Outdoor Units...........................................................................92
8.5 Precaution in Control Wiring Work .........................................................94
Urban Multi
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  • Page 1: Table Of Contents

    PACD011001G2 / PACD011004G3 Urban Multi Inverter “MX1” Series 1. General ....................3 1.1 What is “Urban Multi Series”? ..............3 1.2 The Installation is of Vital Importance ............5 2. Points to Bear in Mind at the System Design..........6 2.1 Points Relating to the Performance of the Air Conditioning Units ....6 2.2 Striking a Balance between System Installation and General Construction Work (Comprehensive Flow Chart) .......7 2.3 Points to Bear in Mind when Preparing the Contract Drawings ....8...
  • Page 2 PACD011001G2 / PACD011004G3 8.6 Check This Before Performing a Test Run..........97 8.7 Precautions in Charging Refrigerant ............98 Urban Multi Inverter “MX1” Series...

  • Page 3: General

    PACD011001G2 / PACD011004G3 General 1. General What is “Urban Multi Series”? It is an air conditioning system for commercial building application with sophisticated individual zone control. As you see from the figure shown below, it can be used for various applications with a broad range of flexibility.
  • Page 4 General PACD011001G2 / PACD011004G3 4. Installation job is more complicated ALL JOBS ON THE SITE SUCH AS INITIAL SETTING OF SWITCHES ETC. MUST BE LISTED UP AND SCHEDULED IN ADVANCE. REFRIGERANT TUBE LENGTH TO EACH UNIT AND REFRIGERANT CHARGE AMOUNT MUST BE ACCURATELY RECORDED FOR THE FUTURE SERVICE.

  • Page 5: The Installation Is Of Vital Importance

    PACD011001G2 / PACD011004G3 General The Installation is of Vital Importance The analysis of major installation problems experienced during the year of 1988 is shown below; How these installation problems affect an equipment are shown below: Urban Multi Inverter “MX1” Series...

  • Page 6: Points To Bear In Mind At The System Design

    Points to Bear in Mind at the System Design PACD011001G2 / PACD011004G3 2. Points to Bear in Mind at the System Design Points Relating to the Performance of the Air Conditioning Units A number of points need to be borne in mind at the system design stage in order to ensure the mechanical efficiency of the air conditioning units.

  • Page 7: Striking A Balance Between System Installation And General Construction Work (Comprehensive Flow Chart)

    PACD011001G2 / PACD011004G3 Points to Bear in Mind at the System Design Striking a Balance between System Installation and General Construction Work (Comprehensive Flow Chart) Note: 1. The division of the work should be thoroughly clarified. (This applies particularly to work relating to the connection of control wiring, fitting of remote controller and central control panel, boundary work on areas such as connection of drain piping and humidification supply piping, inspection and foundation) 2.

  • Page 8: Points To Bear In Mind When Preparing The Contract Drawings

    Points to Bear in Mind at the System Design PACD011001G2 / PACD011004G3 Points to Bear in Mind when Preparing the Contract Drawings The following points should be borne in mind when preparing the contract drawings from the original drawings and the execution drawings. The contract drawings for the air conditioning system are blueprints for the performance of the necessary work which are drawn up on the basis of the original drawings in such a way that a working balance is achieved between the specific requirements of each individual aspect of the work.
  • Page 9 PACD011001G2 / PACD011004G3 Points to Bear in Mind at the System Design 2.3.2 Main Considerations in Preparation of Control Circuit Diagrams In addition to the design of the appropriate this system configuration it is also essential that the control stsyem be made amply clear. If the system is designed and installed without a clear, comprehensive plan then problems are inevitably going to occur during the test run.
  • Page 10 Points to Bear in Mind at the System Design PACD011001G2 / PACD011004G3 Step 2: Preparation The following sequence should be followed in order to prepare control circuit diagrams in accordance with of the Control the system list which has already been completed: 1 Diagrams should be prepared for each individual outdoor unit.

  • Page 11: Installation 1

    PACD011001G2 / PACD011004G3 Installation 1 Installation 1 Step by Step Installation Procedure The above list indicates the order in which the individual work operations are normally carried out but this order may be varied where local conditions warrant such a change. Urban Multi Inverter “MX1”...

  • Page 12: Work Involved In Individual Operations And Points To Be Borne In Mind

    Installation 1 PACD011001G2 / PACD011004G3 Work Involved in Individual Operations and Points to be Borne in Mind 3.2.1 Sleeve and Insert Work Operational steps Preliminary talks Determine with position, size and Carry out work Check work construction number of units company required (V0957)
  • Page 13 PACD011001G2 / PACD011004G3 Installation 1 3.2.2 Installation of Indoor Unit Operational steps Determine Mark installation Fit suspension installation Fit indoor unit position bolts position (V0960) Positioning 3 essential points when installing an indoor unit 1. Height: Take care to accout for final ceiling facing surface level 2.
  • Page 14 Installation 1 PACD011001G2 / PACD011004G3 3.2.3 Refrigerant Pipe Work Operational steps Fit pipes Install indoor unit Cut pipes to size Replace nitrogen provisionally Solder Flushing Air tight test Vacuum drying (V0963) The 3 Principles of The “3 principles of refrigerant piping” must be strictly observed Refrigerant Piping Cause of problem Actoin to avoid problem...
  • Page 15 PACD011001G2 / PACD011004G3 Installation 1 Method for If brazing work is carried out without passing nitrogen gas through the pipes which are being brazed then Replacing Nitrogen this allows the formation of oxidation bubbles on the inside surface of the pipes. These oxidation bubbles (Brazing) are then carried along inside the pipes to cause damage to various members of the system such as valves or compressors and the system ceases to function properly.
  • Page 16 Installation 1 PACD011001G2 / PACD011004G3 Covering of Covering is an extremely important operation as it prevents water, dirt or dust from getting inside Refrigerant Pipes the pipes. Moisture inside the pipes was a constant source of trouble in the past. The utmost care is required to nip this problem in the bud.
  • Page 17 PACD011001G2 / PACD011004G3 Installation 1 Refrigerant Pipe Flushing Flushing is a method of cleaning extraneous matter out of pipes using pressurized gas. [3 major effects] 1. Removal of oxidation bubbles formed inside copper pipes when “nitrogen replacement is insufficient” during soldering work 2.
  • Page 18 Installation 1 PACD011001G2 / PACD011004G3 (The nature and amount of the extraneous material inside the pipe can be checked during flushing by placing a rag lightly over the end of the pipe. In the unlikely case that even a small quantity of moisture is found then the inside of the pipe should be dried out thoroughly.) Action: 1.
  • Page 19 PACD011001G2 / PACD011004G3 Installation 1 c) Brazing The Multi-System requires only copper/copper jointing and the jointing method is explained below. The use of “hard solder” is essential. Brazing a) Brazing work should be carried out such that the final result is directed either downwards or sideways. An upward direction should be avoided wherever possible.
  • Page 20 Installation 1 PACD011001G2 / PACD011004G3 Flare Connection (a) Stiffened pipe must always be annealed at least once prior to the flaring work. (b) A pipe cutter must be used to cut the pipe. (A large pipe cutter must be used where the pipe has a large diameter.
  • Page 21 PACD011001G2 / PACD011004G3 Installation 1 Flange Connection a) The flange sheet surface should be clean and undamaged. (Clean any dirt away with a cloth and check that there has been no damage.) b) Coat the flange sheet surface with refrigeration oil (Ester or ether oil) and then insert the packing. (Do not use SUNISO oil.) c) Tighten the bolts in opposite corners first to ensure that the connection is true.
  • Page 22 Installation 1 PACD011001G2 / PACD011004G3 3.2.4 Drain Pipe Work (Indoor) Operational steps Check for water Install indoor unit Connect drain pipe Insulate drain pipe leaks (V0999) Drain Pipe Gradient a) The drain pipe must be fitted at a gradient of at least 1/100. and Support The drain pipe should be as short as possible and free from airlocks.
  • Page 23 PACD011001G2 / PACD011004G3 Installation 1 Grouped Drain 1. It is standard work practice to make connections to the main pipe from above. The pipe down from the Piping combination should be as large as possible. 2. The pipework should be kept as short as possible and the number of indoor units per group kept to a minimum.
  • Page 24 Installation 1 PACD011001G2 / PACD011004G3 Piping Diameter for Select piping diameter from the below table in accordance with the amount of condensation drained by Grouped Drain all units with a common drain pipe. Pipes Consider 2 l/hr of drainage for every 1 HP. For example, drainage from 3 units running at 2 HP and 2 units running at 3 HP is calculated as follows.
  • Page 25 PACD011001G2 / PACD011004G3 Installation 1 Insulate the drain hose inside the building. (PRECAUTIONS FOR DRAIN RAISING PIPING) Install the drain raising pipes at a height of less than 310 mm. Install the drain raising pipes at a right angle to the indoor unit and no more than 300 mm from the unit. If converging multiple drain pipes, install according to the procedure shown below.
  • Page 26 Installation 1 PACD011001G2 / PACD011004G3 WHEN ELECTRIC WIRING WORK IS NOT FINISHED Remove the electric parts box lid, connect a power supply and remote controller to the terminals. Next, press the inspection/test operation button “ ” on the remote controller. The unit will engage the test operation mode.
  • Page 27 PACD011001G2 / PACD011004G3 Installation 1 Use the attached drain hose 1 and clamp metal 2. Insert the drain hose into the drain socket, up to the white tape. Tighten the clamp until the screw head is less than 4 mm from the hose. Wrap the attached sealing pad over the clamp and drain hose to insulate.
  • Page 28 Installation 1 PACD011001G2 / PACD011004G3 WHEN ELECTRIC WIRING WORK IS FINISHED Check drainage flow during COOL running, explained under “TEST OPERATION”. WHEN ELECTRIC WIRING WORK IS NOT FINISHED Remove the electric parts box lid, connect a power supply and remote controller to the terminals. Next, press the inspection/test operation button “...
  • Page 29 PACD011001G2 / PACD011004G3 Installation 1 If the drain hose cannot be sufficiently set on a slope, fit the hose with drain raising piping as shown in the drawing. Be sur to use the attached drain hose, drain raising pipe, clamp and drain pipe insulation Secure a downward gradient of 1/100 or more for the drain pipe.
  • Page 30 Installation 1 PACD011001G2 / PACD011004G3 WHEN ELECTRIC WIRING WORK IS FINISHED Check drainage flow during COOL running, explained under “TEST OPERATION”. WHEN ELECTRIC WIRING WORK IS NOT FINISHED Remove the electric parts box lid, connect a power supply and remote controller to the terminals. Next, press the inspection/test operation button “...
  • Page 31 PACD011001G2 / PACD011004G3 Installation 1 ( HOW TO INSTALL PIPING ) (1) Connect the drain pipe (field supplied) to the drain pipe, and insulate them. (2) Connect the drain pipe to the drain outlet on the indoor unit, and tighten it with the clamp. (3) Insulate both metal clamp and drain hose with the attached sealing pad.
  • Page 32 Installation 1 PACD011001G2 / PACD011004G3 Built-in Type 1. Install the drain pipes. (CS-FM) Keep piping as short as possible and slope it downwards so that air may not remained trapped inside the pipe. Keep pipe size equal to or greater than that of the connecting pipe (Vinyl pipe of 25 mm nominal diam. and 32 mm outer diam.).
  • Page 33 PACD011001G2 / PACD011004G3 Installation 1 2. After piping, check to make sure draining flows smoothly. Open the water inlet lid, add approximately 1000 cc of water gradually and check drainage flow. WHEN ELECTRIC WIRING WORK IS FINISHED Check drainage flow during COOL running, explained under “TEST OPERATION”. WHEN ELECTRIC WIRING WORK IS NOT FINISHED Remove the electric parts box lid, connect a power supply and remote controller to the terminals.
  • Page 34 Installation 1 PACD011001G2 / PACD011004G3 Ceiling Type (CS-TM) Urban Multi Inverter “MX1” Series...
  • Page 35 PACD011001G2 / PACD011004G3 Installation 1 Wall Type (CS-KM) Floor Standing Type, Concealed Floor Standing Type (CS-PM, CS-RM) 3.2.6 Electrical Work Control Wiring 1. Compatible types of wire Wiring Specifications Wiring Type Shield Wire (2 wire) (See NOTE 1, 2) Size 0.75~1.25 mm²...
  • Page 36 Installation 1 PACD011001G2 / PACD011004G3 b) When cable more than 1.25 mm² is used When wiring indoor units together, the terminal block will not be able to accommodate 2 cables simultaneously if the cables are larger than 1.25 mm². c) For multi-core cable The greater play between wires, the more the transmitted wave is distorted and transmission destabilized.
  • Page 37 PACD011001G2 / PACD011004G3 Installation 1 When using high static pressure indoor units the fan motors must have a large capacity. Single phase 220~240V branch circuits are therefore required for each indoor unit. Example: Up to 10 × 2.5HP indoor units or 5 × 5HP indoor units can be wired together. b) The outdoor unit circuit breaker A separate circuit breaker must be fitted for each unit.
  • Page 38 Installation 1 PACD011001G2 / PACD011004G3 Important points 1. Earthing Have the indoor and outdoor units both been earthed? ∗ If the apparatus is not properly earthed then there is always a risk of electric shocks. The earthing of the apparatus must be carried out by a qualified person. 3.2.7 Duct Work (Indoor) Operational steps...
  • Page 39 PACD011001G2 / PACD011004G3 Installation 1 3.2.8 Thermal Insulation Work (Refrigerant Piping) Operational steps Insulation (with the exception of Refrigerant pipe Insulation Air tight test the jointed work (jointed areas) areas) (V0985) Materials The thermal insulation materials which are used must be well able to withstand the heat from the pipes. Example: Heat pump type: Heat resistant polyethylene foam (heat resistance of at least 120°C) Cooling only: Polyethylene foam (heat resistance of 100°C or more)
  • Page 40 Installation 1 PACD011001G2 / PACD011004G3 3.2.9 Installation of Outdoor Unit Operational steps Prepare foundation Install outdoor unit (V1150) Foundation of Units Model CU-5MX / MC CU-8MX / MC CU-10MX / MC 1200 CU-8ME CU-10ME Notes: 1. Standard concrete mix: 1 cement / 2 sand / 4 gravel with 10 reinforcing rods (approx. 300mm intervals). 2.
  • Page 41 PACD011001G2 / PACD011004G3 Installation 1 Caution in installation Execute the installation work by checking the foundation strength and levelness to avoid any occurrence of vibration and noise. Fix the unit tightly with foundation bolts. (Prepare 4 sets of M12 foundation bolts with proper nuts and washers.) The proper length of the foundation bolts form the surface of the base is 20mm.
  • Page 42 Installation 1 PACD011001G2 / PACD011004G3 Service Space It is extremely important that enough space is left when installing the equipment to allow routine servicing and maintenance to be carried out without undue hindrance. It is particularly important to bear in mind the work which will be required if the compressor needs to be replaced.
  • Page 43 PACD011001G2 / PACD011004G3 Installation 1 Techniques for 1. Snow must be prevented from accumulating around the outdoor unit’s air inlet and air discharge outlet Prevention of Snow and one possible answer would be to fit a snow hood. Accumulation [Points relating to design of snow hood] Areas of High In order to ensure the required outdoor unit airflow the duct resistance must be less than the Snowfall...
  • Page 44 Installation 1 PACD011001G2 / PACD011004G3 Management of When placing several units in close proximity to each other some thought should be given to the possibility available space of short circuiting and also to the provision of adequate space for servicing. (For more detailed information when placing please refer to the system design materials.) several units in...
  • Page 45 PACD011001G2 / PACD011004G3 Installation 1 to be carried out comfortably. Points to be Room for servicing should be allowed in accordance with the rules of installation. considered when installing the inverter air conditioner Note: The inverter air conditioner sometimes experiences noise interference from AM broadcast. Due consideration should therefore be given as shown in the figure to the proximity of other electronic equipment such as radios, PCs or stereos when selecting an installation location for...
  • Page 46 Installation 1 PACD011001G2 / PACD011004G3 3.2.10 Air Tight Test Operational steps Pressurize Check for pressure drop Success Complete refrigerant pipe installation work Locate and repair leaks (V0987) Essential Points of The key to successful testing is strict adherence to the following procedure: Testing a) The liquid and gas piping in each refrigerant system should be pressurized in turn in accordance with (Maintaining...
  • Page 47 PACD011001G2 / PACD011004G3 Installation 1 Checking for Leaks [Check 1] (Where pressure falls while carrying out Steps 1 to 3 described on previous page) Check by ear..Listen for the sound of a major leak. Check by hand..Check for leak by feeling around jointed sections with hand. Soap and water check (∗Snoop)..Bubbles will reveal the presence of a leak.
  • Page 48 Installation 1 PACD011001G2 / PACD011004G3 3.2.11 Vacuum Drying What is vacuum Vacuum drying is: drying? “The use of a vacuum pump to vaporize (gasify) the moisture (liquid) inside the pipes and expel it leaving the pipes completely dry inside.” At 1 atm (760 mmHg) the boiling point (evaporating temperature) of water is 100°C but if a vacuum is created inside the pipes using a vacuum pump then the boiling point is rapidly reduced as the degree of the vacuum is increased.
  • Page 49 PACD011001G2 / PACD011004G3 Installation 1 Choosing a General Vacuum Pump Refrigerant piping content volume of the Urban Multi “MA1 Series” is larger than the Urban Multi “MX1 Series”, and consequently takes more time for vacuum drying. If you have time to spare, you may use the same vacuum pump, but if you want to save time, you will have to use a pump with higher exhaust velocity (exhaust volume).
  • Page 50 Installation 1 PACD011001G2 / PACD011004G3 2. Vacuum pump maintenance Because of their nature, most vacuum pumps contain large amounts of oil which lubricates bearings, etc., and functions to enhance airtightness of pistons. When using a vacuum pump to discharge air from refrigerant piping, moisture in the air tends to get mixed in with the oil.
  • Page 51 PACD011001G2 / PACD011004G3 Installation 1 Vacuum Drying There are two vacuum drying methods and the appropriate one should always be chosen to conform with Procedure individual local conditions. [Normal vacuum drying]..The standard method [Operational steps] 1. Vacuum drying (1st time): Connect a manifold gauge to the service port of the liquid or gas pipe and operate the vacuum pump for at least 2 hours.
  • Page 52 Installation 1 PACD011001G2 / PACD011004G3 Special vacuum drying This vacuum drying method is selected when there is a suspicion that there may be moisture in the pipes. For example: When moisture was discovered during the refrigerant pipe flushing operation When there is a risk of condensation forming inside the pipes during periods of heavy rainfall When there is a risk of condensation forming inside the pipes due to a long term of works When there is a risk that rainwater may have entered the pipes during installation The special vacuum drying method is the same as the standard method except that nitrogen is introduced...
  • Page 53 PACD011001G2 / PACD011004G3 Installation 1 3.2.12 Additional Charge of Refrigerant Operational steps Use the length of the piping to Additional charge of calculate the amount of refrigerant refrigerant required (V0995) Important points 1. The results of all calculations must be recorded. (Make a list.) 2.
  • Page 54 Installation 1 PACD011001G2 / PACD011004G3 Urban Multi Inverter “MX1” Series...
  • Page 55 PACD011001G2 / PACD011004G3 Instalation 1 Inverter Series (CU-5MX, CU-5MC) Branch using Line branch pipes Branch using Line branch pipes and Header branch pipes Branch using Header branch pipes EXAMPLE OF CONNECTION (When 8 indoor units are connected) Pipe length between outdoor and indoor units 100m or less Actual pipe length Maximum...
  • Page 56 Instalation 1 PACD011001G2 / PACD011004G3 Inverter Series (CU-8 · 10MX, CU-8 · 10MC) Branch using Line branch pipes Branch using Line branch pipes and Header branch pipes Branch using Header branch pipes EXAMPLE OF CONNECTION (When 8 indoor units are connected) Pipe length between outdoor and indoor units 100m or less Actual pipe length...

  • Page 57: Installation 2

    PACD011001G2 / PACD011004G3 Installation 2 4. Installation 2 Field Settings 4.1.1 Field Settings Work procedure Indicate the person responsible The appointed person makes for settings and setting method the settings. on the contract drawings. (M010) Checking Settings Check settings and setting procedure are marked on the contract drawings and system diagrams. Note: Setting procedure will vary with equipment model.
  • Page 58 Installation 2 PACD011001G2 / PACD011004G3 Settings Example for Inverter MX1 Series Field settings mode with the remote controller With the Inverter MX1 Series, all field settings are made from the remote controller of the indoor unit. A description of each setting is provided on the below table. For details on how to make settings, refer to the operation manual and / or installation manual of the unit.

  • Page 59: Setting Modes

    PACD011001G2 / PACD011004G3 Installation 2 Setting Modes There are the following three setting modes. Setting mode 1 (H1P off) Used to select the cool/heat setting, low-noise run and sequential start. Setting mode 2 (H1P on) Used to modify the running status and to program addresses, etc. Usually used in servicing the system. Monitor mode (H1P flashing) Used to check the programs made in the setting mode 2, the number of units being connected, and other entries.
  • Page 60 Installation 2 PACD011001G2 / PACD011004G3 4.2.1 Setting Mode 1 Cool/heat selection setting If carried out from the indoor unit remote controller: If carried out from the cool/heat selector: (SS1) IN/D OUT/D IN/D OUT/D UNIT UNIT UNIT UNIT SELECT SELECT (Factory set) The factory settings are: C/H SELECT SEQ.
  • Page 61 PACD011001G2 / PACD011004G3 Installation 2 4.2.2 Setting Mode 2 To switch from setting mode 1 (normal) to setting mode 2, you must push and hold the next page button (BS1) for 5 seconds. (You cannot enter setting mode 2 while setting mode 1 is set.) Setting Procedure 1.
  • Page 62 Installation 2 PACD011001G2 / PACD011004G3 LED display LED display LED display No Setting item Description H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P Emergency operation Emergency operation (Emergency when Inverter type operation 1)
  • Page 63 PACD011001G2 / PACD011004G3 Installation 2 4.2.3 Monitor Mode C/H SELECT SEQ. MODE TEST L.N.O.P. START MAIN To enter the monitor mode, push the MODE button when in setting mode 1. MODE The lower 4 digits indicate the setting in each of the frames below.
  • Page 64 Installation 2 PACD011001G2 / PACD011004G3 Monitor Mode Data Mode No. Data Display Size (binary number) method No 1 Cool/heat group address 0 ~ 31 Lower 6 digits No 2 Low noise / demand address 0 ~ 31 Lower 6 digits No 3 Not used No 4...
  • Page 65 PACD011001G2 / PACD011004G3 Installation 2 4.2.4 Test Run Adjustment Procedure and essential points The order of the test run operations is extremely important and they should be carried out in accordance with the following principles: 1. Checks to be carried out before switching the power on. (It is assumed that the vacuum drying operation has been completed.) Check for incorrectly laid power cables and loose screws.
  • Page 66 Installation 2 PACD011001G2 / PACD011004G3 3. Operation checks Urban Multi Inverter MX1 Series Put into test run mode. Pushing the test run button switches the thermostat on for 30 minutes. Set the operating mode to Reason: To prevent liquid back "Cooling".

  • Page 67: Caution For Refrigerant Leaks

    PACD011001G2 / PACD011004G3 Caution for Refrigerant Leaks 5. Caution for Refrigerant Leaks Caution for Refrigerant Leaks 5.1.1 Introduction (Points to note in connection with refrigerant leaks) The installer and system specialist shall secure safety against leakage according to local regulations or standards.
  • Page 68 Caution for Refrigerant Leaks PACD011001G2 / PACD011004G3 5.1.3 Procedure for Checking Maximum Concentration Check the maximum concentration level in accordance with steps 1 to 4 below and take whatever action is necessary to comply. Step 1 Calculate the amount of refrigerant (kg) charged to each system separately. amount of refrigerant in a single unit additional charging amount (amount total amount of...
  • Page 69 PACD011001G2 / PACD011004G3 Caution for Refrigerant Leaks Step 5 Dealing with situations where the result exceeds the dangerous concentration level. Where the installation of a facility results in a concentration in excess of the dangerous concentration level then it may be necessary to revise the system design to some extent or else take one of the following courses of action.

  • Page 70: Hand Over To Customer

    Hand Over to Customer PACD011001G2 / PACD011004G3 Hand Over to Customer Operational Steps Explain how to Hand over Make final report operate relevant printed Complete test run (test run equipment materials inspection sheet) (V1050) Important Points a) The measurements taken during the test run should be recorded and kept on a test run inspection sheet.

  • Page 71: Bad Examples And Good Examples In Installation

    PACD011001G2 / PACD011004G3 Bad Examples and Good Examples in Installation 7. Bad Examples and Good Examples in Installation Example 1: Signal interference due to use of multiple core cable (all model) Situation Although for the purposes of group control there are only 2 units per group there are transmission malfunctions between the indoor units and the remote controller and the remote controller’s address display is showing non-existent addresses such as 13 or 15.

  • Page 72: Example 2: Mismatch Between Cables Connecting Indoor And Outdoor Units And Corresponding Piping. (All Model)

    Bad Examples and Good Examples in Installation PACD011001G2 / PACD011004G3 Example 2: Mismatch between cables connecting indoor and outdoor units and corresponding piping. (all model) Situation The remote controller is not showing any malfunction and the system is operating but there is no flow of warm air from the indoor unit (in heating mode).

  • Page 73: Example 3: Drain Pipe Trap Shape Defective

    PACD011001G2 / PACD011004G3 Bad Examples and Good Examples in Installation Example 3: Drain pipe trap shape defective Situation Indoor unit was fitted with a drain trap but a leak occurred during subsequent operation. Source of Problem The trap was not properly shaped thus preventing it from functioning effectively as a trap and resulting in and Remedial drain leakage.

  • Page 74: Example 4: Pressure Down Despite Absence Of Leaks During Air Tight Test (All Model)

    Bad Examples and Good Examples in Installation PACD011001G2 / PACD011004G3 Example 4: Pressure down despite absence of leaks during air tight test (all model) Situation In order to carry out local air tight tests on the refrigerant piping the system was pressurized (3.33KPa) via the liquid pipe service port and after 24 hours the pressure was found to have fallen.

  • Page 75: Example 5: Excessive Noise Due To Incorrect Angling Of Line Branch Pipes

    PACD011001G2 / PACD011004G3 Bad Examples and Good Examples in Installation Example 5: Excessive noise due to incorrect angling of Line branch pipes Situation The noise of the refrigerant flow during defrosing is excessive. Source of Problem The angle of the fittings was incorrect and needed to be rectified as shown in the following figure. and Remedial Action 1.

  • Page 76: Example 6: Cracks Develop In Field Pipes Due To Thermal Expansion And Contraction

    Bad Examples and Good Examples in Installation PACD011001G2 / PACD011004G3 Example 6: Cracks develop in field pipes due to thermal expansion and contraction Situation Refrigerant piping has developed cracks in soldered points and is leaking gas. Cause Both ends of the pipe have been tightly fixed in place. ↓...

  • Page 77: Example 7: Transmission Wiring Between The Cool/Heat Selector And The Outdoor Unit Is Too Close To A High Voltage Wire

    PACD011001G2 / PACD011004G3 Bad Examples and Good Examples in Installation Example 7: Transmission wiring between the cool/heat selector and the outdoor unit is too close to a high voltage wire. Situation Heating is indicated despite having selected cooling with the cool/heat selector. Cause and The transmission wiring between the cool/heat selector and the outdoor unit is too close to a high voltage Remedial Action...

  • Page 78: Example 8: The Centralized Control Group Number Cannot Be Set (Mx1 Series)

    Bad Examples and Good Examples in Installation PACD011001G2 / PACD011004G3 Example 8: The centralized control group number cannot be set (MX1 Series). Situation An attempt was made to set the centralized control group number with the indoor unit remote controller, but “00”...

  • Page 79: Example 9: "88" Cannot Be Cleared From The Central Remote Controller

    PACD011001G2 / PACD011004G3 Bad Examples and Good Examples in Installation Example 9: “88” cannot be cleared from the central remote controller. Situation The display on the central remote controller does not change from its initial state after turning power ON. Initial display of the central remote controller Cause 1.

  • Page 80: Appendix (Check Points In Installing Um Series)

    Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 8. Appendix (Check Points in Installing UM Series) Operating Noise of Indoor Units 8.1.1 Difference Between Catalogue Data and Actual Noise Operating noise differs depending on the place of measurement (room) because of the various degrees with which the room reverberates the sound.
  • Page 81 PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) Classifications of indoor unit environments (reference data) Table 2 Classification Environment Example Faint noises Recommended (Note 2) operating noise on site Non-active places requiring Reception rooms, libraries, ~ 35 ~ 40 silence sitting rooms, hospitals (examining rooms) (Note 1)
  • Page 82 Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 8.1.3 Calculating Operating Noise When two or more units are running at the same time, the amount of operating noise they produce rises. The total amount of noise produced can be obtained ahead of time with Chart 4. Sample calculation 1 and L are given as compounded sounds of 50 and 49 dB respectively.

  • Page 83: Procedures For Rigging Refrigerant Piping

    PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) Procedures for Rigging Refrigerant Piping 8.2.1 Branch Pipes Components (Option) CU-5MC, CU-5MX KHRP26K11T (less than 100) Suction gas side Liquid side Including insulator, cap pipes and tapes KHRP26K17T (100 or more) Suction gas side Liquid sides Including insulator, cap pipes and tapes...
  • Page 84 Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 U-5MC, CU-5MX KHRP26K11H (4 branch fitting) (less than 100) Suction gas side Liquid side Including insulator, cap pipes and tapes KHRP26K17H (8 branch fitting) (100 or more) Suction gas side Liquid side Including insulator, cap pipes and tapes CU-8 ·...
  • Page 85 PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) 8.2.2 Types of Refrigerant Piping Outdoor unit Total capacity of indoor units Gas pipe size Liquid pipe size φ15.9 φ9.5 CU-5 Less than 100 φ15.9 φ9.5 Less than 100 Addition required for small capacity connection φ19.1 φ9.5...
  • Page 86 Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 2. Header branch pipes If the selected field pipe differs from the branch pipe in size, cut the connection with a pipe cutter as shown below. Fit a stop end on all open branch pipe connections not in use. Install the branch pipe horizontally.

  • Page 87: Piping System Diagrams And Refrigerant Piping Work For The Inverter Mx1 Series

    PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) Piping System Diagrams and Refrigerant Piping Work for the Inverter MX1 Series 8.3.1 Indoor Unit CS-LM, CS-UM, CS-DM, CS-JM, CS-FM, CS-EM, CS-TM, CS-KM, CS-PM, CS-RM Refrigerant pipe connection port diameters (mm) Model Liquid...
  • Page 88 Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 8.3.2 Outdoor Unit CU-5MX Urban Multi Inverter “MX1” Series...
  • Page 89 PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) CU-8 10MX · Urban Multi Inverter “MX1” Series...
  • Page 90 Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 CU-5MC Urban Multi Inverter “MX1” Series...
  • Page 91 PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) CU-8 · 10MC Urban Multi Inverter “MX1” Series...

  • Page 92: Locating Outdoor Units

    Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 Locating Outdoor Units Be careful to allow sufficient intake space and maintenance space. 8.4.1 Single Unit Installation 8.4.2 Multiple Units in Series Urban Multi Inverter “MX1” Series...
  • Page 93 PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) Notes: 1. Wall height for pattern No. 1 and pattern No. 2 is as follows. Front side ... 1500 mm Intake side ... 500 mm Lateral ... Unlimited 2. If exceeding the above wall height, add h1/2 and h2/2 to the front and intake side maintenance space as shown in the drawing on the right.

  • Page 94: Precaution In Control Wiring Work

    Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 Precaution in Control Wiring Work 8.5.1 Electric Wiring GENERAL INSTRUCTIONS All wiring, components and materials to be procured on the site must comply with the applicable local and national codes. Use copper conductors only.
  • Page 95 PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) EXAMPLES OF WIRING FOR TRANSMISSION 1. Series wiring 2. Bus type wiring (Can be branched up to 16 branshings) Example of 3 branchings 3. Star type wiring (Can be branched up to 16 branchings) Example of 3 branchings Notes: 1.
  • Page 96 Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 WIRING TO THE INDOOR UNIT AND OUTDOOR UNIT Note: Do not connect the power supply wiring (220 to 240V) to the control terminal strip. If connected by mistake, it may damage or burn electrical parts of optional controllers for centralized control and indoor unit. It may result in serious danger.
  • Page 97 PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) Check This Before Performing a Test Run Before performing checks, be sure to fill out the below sheet and give the building manager a copy. Explain to the him/her that keeping them in a handy safe place will enable faster response by aftercare service. System diagram (with control wiring and setting switches marked) Piping diagram (with refrigerant and drain pipe marked) Wiring diagram (with breaker locations marked)
  • Page 98 Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 Precautions in Charging Refrigerant 8.7.1 Mark the Model Number of the Indoor Unit and Its Location. This information is needed for aftercare service. Indoor unit model number Location 8.7.2 Calculating Refrigerant Charge Calculate the charge of refrigerant needed as described below, and add accordingly.
  • Page 99 PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) Urban Multi system check list Checked date: Delivered date: Check ordered date: Customer System name <Outdoor unit> Location Model name Serial No. <Indoor unit> Centralized control Location Model Serial No. group No.
  • Page 100 Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 System Name (1/2) INSPECTION ITEM INSPECTION METHOD STANDARD ACTUAL MEASUREMENT Judgement Breaker Visual inspection Specified capacity capacity Refrigerant piping Gas leak detector No leakage system Heat exchanger Visual inspection No clogging or Good damage Terminal...
  • Page 101 PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) (2/2) INSPECTION ITEM INSPECTION METHOD STANDARD ACTUAL MEASUREMENT Judgement Main power source Tester ±10% of rated voltage ±10% of rated voltage voltage Operation circuit Tester Positive voltage direction Fan rotation Visual inspection None Good...
  • Page 102 Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 Urban Multi Inverter “MX1” Series...
  • Page 103 PACD011001G2 / PACD011004G3 Appendix (Check Points in Installing UM Series) Urban Multi Inverter “MX1” Series...
  • Page 104 Appendix (Check Points in Installing UM Series) PACD011001G2 / PACD011004G3 Urban Multi Inverter “MX1” Series...

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