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WT09050X01

10. Electrical work

Electrical work must be performed by qualified personnel in accordance with local 

regulations and the instructions provided in this manual. Only use the specified cables and 

dedicated circuits.

 -Inadequate power source capacity or improper electrical work will result in electric shock, 

malfunction, or fire.

Proper grounding must be provided by qualified personnel.

 -Improper grounding may result in electric shock, fire, explosion, or malfunction due to electrical 

noise. Do not connect the ground wire to gas or water pipes, lightning rods, or telephone ground 

wires.

10-1. Before electrical work

When performing electrical work, refer to the indoor unit or controller installation manuals as well.

Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water, etc.) when proceeding with the 

wiring and connections.

When opening or closing the front panel of the control box, do not let it come into contact with any of the internal 

components.

Specific wiring requirements should adhere to the wiring regulations of the region.

Include some slack in the wiring for the control box on the indoor and outdoor units, because these boxes are 

sometimes removed at the time of service work.

10-2. Power cables and device capacity

Include some slack in the power cables.

 -Failure to do so may break or overheat the cables, resulting in smoke or fire.

Install an inverter circuit breaker on the power supply of each unit.

 -Failure to do so may result in electric shock or fire.

Only use properly rated breakers (an earth leakage breaker, local switch <a fuse 

that meets local electrical codes>, or overcurrent breaker).

 -Failure to do so may result in electric shock, malfunction, smoke, or fire.

Only use standard power cables of sufficient capacity.

 -Failure to do so may result in current leakage, overheating, smoke, or fire.

Tighten all terminal screws to the specified torque.

 -Loose screws and contact failure may result in smoke or fire.

If a large electric current flows due to a malfunction or faulty wiring, earth-leakage breakers 

on the unit side and on the upstream side of the power supply system could both operate. 

Depending on the importance of the system, separate the power supply system or take 

protective coordination of breakers.

Summary of Contents for CITY MULTI PURY-EM-YNW-A1(-BS) Series

Page 1: ...ho pou v n si p ed instalac klimatiza n jednotky d kladn pro t te tuto p ru ku k instalaci N VOD NA IN TAL CIU Pre bezpe n a spr vne pou itie si pred in talovan m klimatiza nej jednotky pros m starost...

Page 2: ......

Page 3: ...work 22 9 1 Restrictions 22 9 2 Pipe selection 23 9 3 Twinning kit selection 23 9 4 Pipe connection example 24 9 5 Piping connections and valve operations 29 9 6 Air tightness test 32 9 7 Thermal insu...

Page 4: ...e of the wrong type of refrigerant Do not use the unit in an unusual environment If the unit is used in areas exposed to large amounts of oil steam organic solvents or corrosive gases such as ammonia...

Page 5: ...aler for the proper disposal of the unit The refrigerant oil and the refrigerant in the unit will pose a risk of environmental pollution fire or explosion Do not use means to accelerate the defrosting...

Page 6: ...ucts Doing so may result in injury Observe the restrictions on the maximum weight that a person can lift which is specified in local regulations Failure to do so may result in injury 1 3 Precautions f...

Page 7: ...of Install the salt resistant unit out of direct exposure to sea breeze and minimize the exposure to salt water mist Periodically wash salt deposits off the unit especially when the unit is installed...

Page 8: ...roper electrical work will result in electric shock malfunction or fire Install an inverter circuit breaker on the power supply of each unit Failure to do so may result in electric shock or fire Only...

Page 9: ...efore starting operation Keep the power turned on throughout the operating season Insufficient energizing will result in malfunction Do not use the air conditioner for special purposes e g keeping foo...

Page 10: ...f phosphorus deoxidized copper copper and copper alloy seamless pipes that meets local requirements Pipe joints should also meet local requirements Keep the inner and outer surfaces of the pipes clean...

Page 11: ...se by lay persons This appliance is not intended for use by persons including children with reduced physical sensory or mental capabilities or lack of experience and knowledge unless they have been gi...

Page 12: ...t In this manual the following terms are used Hybrid City Multi system Controllers that are connected to indoor units HBC controller Heating medium on the indoor unit side Water or antifreeze liquid C...

Page 13: ...A1 BS PURY M250YNW A1 BS PURY M300YNW A1 BS PURY M350YNW A1 BS PURY M400YNW A1 BS PURY M450YNW A1 BS PURY M500YNW A1 BS 2 EM models Outdoor unit model Combination of outdoor units PURY EM200YNW A1 BS...

Page 14: ...4 ON 80 Pa 60 Pa SW6 4 OFF 30 Pa 0 Pa 3 These models can be used for a Hybrid City Multi system 4 Cooling mode 2 EM models Model PURY EM200YNW A1 3 PURY EM250YNW A1 3 PURY EM300YNW A1 3 PURY EM350YNW...

Page 15: ...table below lists all the parts and their quantities included in the package 1 M models Tie band Washer M200 2 M250 2 M300 2 M350 2 M400 2 M450 2 M500 2 4 2 EM models Tie band Washer EM200 2 EM250 2 E...

Page 16: ...to protect the unit from being scratched Put 50 mm 2 in or thicker protective pads between slings and the unit where the slings touch the unit at the top of the unit to protect the unit from being sc...

Page 17: ...e it may reach a flammable concentration in case the room is small To avoid ignition maintain a safe work environment by ensuring appropriate ventilation If the refrigerant leaks in a room or an area...

Page 18: ...Longitudinal direction Width of an opening 0 9 m Height from the ground to an opening 0 125 m Height of an opening 0 15 m Opening Must occupy 80 of the longitudinal side of a space Must have an openin...

Page 19: ...When the wall at the rear exceeds its height limit When all walls exceed their height limits h3 L1 L2 L3 h1 h2 L1 L2 L3 h2 L1 h3 h2 L2 L3 L3 h1 Add the dimension that exceeds the height limit shown a...

Page 20: ...of drain water is excessive drain water comes out of the outdoor unit along the panel during heating operation 1 Side by side installation When the distances between the units L4 need to be small Whe...

Page 21: ...2 L4 L2 Required minimum distance mm in L2 Rear L2 Rear L4 Between 300 11 13 16 h2 300 11 13 16 h2 900 35 7 16 When there are two walls in an L shape h2 L2 L4 L3 h3 Required minimum distance mm in L2...

Page 22: ...nd the outdoor unit by putting a rubber cushion or by applying an electrically insulated coating to prevent the base from rusting Install the unit on a level surface With some types of installation un...

Page 23: ...unit color Size Refer to the Data Book Outlet Inlet Snow hood Raised base Install the unit so that the wind will not blow directly against the inlet and outlet If necessary install the unit on a raise...

Page 24: ...t recovery equipment Gas leak detectors for conventional refrigerants will not react to a refrigerant that does not contain chlorine If the specified refrigerant is mixed with water refrigerant oil or...

Page 25: ...ss mm mil Type 6 35 1 4 0 8 32 Type O 9 52 3 8 0 8 32 Type O 12 7 1 2 0 8 32 Type O 15 88 5 8 1 0 40 Type O 19 05 3 4 1 2 48 Type O 1 0 40 Type 1 2H or H 22 2 7 8 1 0 40 Type 1 2H or H 25 4 1 1 0 40 T...

Page 26: ...nit and HBC controller refrigerant pipework A 110 m 360 ft or below Water pipework between indoor units and HBC controller f g 60 m 196 ft or below Difference of elevation Between HBC controller and o...

Page 27: ...ow Water pipework between indoor units and HBC controller f g 60 m 196 ft or below Between HBC controllers B 40 m 131 ft or below Difference of elevation Between HBC controller and outdoor units Outdo...

Page 28: ...o the 2 Branch Joint Pipe to which a W P 63 is connected either a W P 10 or a W P 15 unit is connectable Connecting W P 100 or 125 indoor units to an HBC controller When connecting W P 100 or 125 indo...

Page 29: ...side Low pressure side PURY E M300 CMB WM108V AA CMB WM1016V AA 15 88 5 8 Brazed 22 2 7 8 Brazed 15 88 5 8 Brazed for each HBC controller 19 05 3 4 Brazed for each HBC controller PURY E M350 28 58 1...

Page 30: ...P 63 unit to the same set of HBC ports use a size 32A pipe in the section indicated as b and c and connect the W P 63 unit to the pipe indicated as c in the figure Refer to section 9 4 1 Connecting W...

Page 31: ...inside the refrigerant pipes will cause the refrigerant oil to deteriorate and cause the compressor to malfunction 9 5 1 Removing the pinched connecting pipes The unit is shipped with the pinched conn...

Page 32: ...educe the number of bending portions as much as possible and make the bending radius as big as possible Do not use any commercially available anti oxidizing agents since they may cause pipe corrosion...

Page 33: ...1 8 28 58 1 1 8 EM400 19 05 3 4 EM450 EM500 When expanding the on site piping satisfy the minimum insertion depth requirement as follows Pipe size mm in Minimum insertion depth mm in 5 1 4 or more le...

Page 34: ...Make sure the service valves are closed Add pressure to the refrigerant pipes through the service ports of the high and low pressure pipes Pressurize to the design pressure 4 15 MPa using nitrogen ga...

Page 35: ...pressure pipe Low pressure pipe Thickness mm in Min 10 7 16 Min 20 13 16 Heat resistance Min 120 C 248 F Between an HBC controller and indoor unit Refer to the HBC controller Installation Manual for d...

Page 36: ...a fire limit zone or through a parting wall 1000 39 3 8 1000 39 3 8 Sleeve Insulation material Lagging Caulking material Band Waterproof layer Sleeve with a flange Caulk with a nonflammable material...

Page 37: ...iple Evacuation Evacuate the system to 533 Pa from both service ports using a vacuum pump Pressurize the system with dry nitrogen gas up to 0 Pa from the discharge service port Evacuate the system to...

Page 38: ...19 5 688 27 5 971 M450YNW 10 8 381 19 5 688 30 3 1069 EM450YNW 10 8 381 19 5 688 30 3 1069 M500YNW 10 8 381 19 5 688 30 3 1069 EM500YNW 10 8 381 19 5 688 30 3 1069 Both refrigerant overcharge and und...

Page 39: ...ipes marked with the letters below A1 15 88 18 m A2 15 88 5 m A3 15 88 10 m B 15 88 8 m The total length of the high pressure piping and liquid piping in each case is as follows 15 88 total length 18...

Page 40: ...le units Example Outdoor unit model PURY EM300YNW A1 Main HBC controller 1 model CMB WM108V AA Main HBC controller 2 model CMB WM108V AA Sub HBC controller model CMB WM108V AB Refer to the pipe connec...

Page 41: ...akage of refrigerant will not accumulate When installing an HBC controller take safety measures in accordance with the European Standard based on the system refrigerant amount and the room volume as s...

Page 42: ...es not have a siphon pipe charge the liquid refrigerant with the tank upside down as shown in the figure below Siphon pipe After evacuation and refrigerant charging ensure that the service valves are...

Page 43: ...the wiring regulations of the region Include some slack in the wiring for the control box on the indoor and outdoor units because these boxes are sometimes removed at the time of service work 10 2 Pow...

Page 44: ...5 30 3 E M250 4 0 12 4 0 12 30 A 100 mA 0 1 sec or less 32 32 30 3 E M300 4 0 12 4 0 12 30 A 100 mA 0 1 sec or less 32 32 30 3 E M350 6 0 10 6 0 10 40 A 100 mA 0 1 sec or less 40 40 40 0 26 E M400 10...

Page 45: ...r outdoor use shall not be lighter than polychloroprene sheathed flexible cord design 60245 IEC57 For example use wiring such as YZW This unit is intended for the connection to a power supply system w...

Page 46: ...en extending the length of the transmission cables to 1000 m 3280 ft consult your dealer Remote controller cable ME remote controller cable MA remote controller cable Type 2 core sheathed cable unshie...

Page 47: ...ontrol transmission cable move the power jumper from CN41 to CN40 on only one of the outdoor units 2 If a system controller is used set SW5 1 on ALL of the outdoor units to ON 3 Main HBC controller Su...

Page 48: ...to CN40 on only one of the outdoor units 2 If a system controller is used set SW5 1 on ALL of the outdoor units to ON 3 When a PAR 31MAA is connected to a group no other MA remote controllers can be c...

Page 49: ...aisy chain terminals TB3 on outdoor units together in the same refrigerant system 2 Leave the power jumper connected to CN41 Maximum allowable length of control cables Transmission cables L1 L2 L3 L4...

Page 50: ...ammer Use the appropriate knockout hole according to the size of the power cable referring to the table below 1 E M200 to 300 1 When routing the wiring through the front of the unit 2 When routing the...

Page 51: ...igure above so that the cable is long enough for the Main Box to be moved for servicing If there are any gaps around the power cable and transmission cable please be sure to fill these in with a suita...

Page 52: ...ltage Transmission cable not supplied The length of the section after the cable access hole must be at least 1100 mm 43 in Power supply terminal block Power cable not supplied Rubber bushing 2 Tie ban...

Page 53: ...ol box 3 When tying the supplied tie band around the rubber bushing make sure to leave no gap between the ends Cables are coming out of the rubber bushing Wiring Cross sectional view Rubber bushing ov...

Page 54: ...ning the screws do not push the driver strongly to avoid damaging the screw Make an alignment mark with a permanent marker across the screw head washer and terminal after tightening the screws Take th...

Page 55: ...uals the address of the outdoor unit plus 1 If the address that is assigned to the main HBC controller overlaps any of the addresses that are assigned to the outdoor units or to the sub HBC controller...

Page 56: ...igerant in the compressor By turning on the main power and energizing the unit for 12 hours or longer the refrigerant in the compressor will evaporate and the insulation resistance will rise Do not ap...

Page 57: ...timing OFF ON SW5 1 Centralized control switch Without connection to the centralized controller With connection to the centralized controller Before being energized SW5 2 Deletion of connection inform...

Page 58: ...s over to the preset speed according to the timer setting or refrigerant temperature when the thermostat is turned on The fan stops during heating operation Defrost The fan remains stopped during the...

Page 59: ...lug connectors check that the outdoor unit fan is not rotating and that the voltage is 20 VDC or below The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates...

Page 60: ...Refrigerant R32 8 0 kg 10 8 kg 10 8 kg Allowable pressure Ps HP 4 15 MPa LP 2 26 MPa Net weight 273 kg 293 kg 337 kg 2 EM models Model PURY EM200YNW A1 BS PURY EM250YNW A1 BS PURY EM300YNW A1 BS PURY...

Page 61: ...ted greenhouse gases OPERATION COOLING HEATING RATED VOLTAGE 3N FREQUENCY 50 60 Hz 400 415 380 kW kW CAPACITY kcal h Btu h RATED INPUT RATED CURRENT 50 60 400 415 380 A V RATED CONDITION INDOOR 27 19...

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Page 64: ...egulations Low Voltage Directive 2014 35 EU Electromagnetic Compatibility Directive 2014 30 EU Pressure Equipment Directive 2014 68 EU Machinery Directive 2006 42 EC Please be sure to put the contact...

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