CITY MULTI YKE-Series: Further Enhanced Energy Saving
Energy saving is increasingly important globally. Mitsubishi Electric leads in developing advanced products that provide high-quality energy-saving solutions across various sectors.
High Rated Performance
Compared to conventional series, all YKE series models (8 to 60HP) show improved rated EER/COP, leading to less energy consumption during peak hours and high-temperature periods.
High Partial-Load Performance
YKE-Series units surpass conventional models in both rated and partial-load performance. This results in significant energy savings during mornings and evenings when temperatures are lower and less cooling power is required.
Energy Saving Assist Function
This function optimizes energy-saving performance by precisely matching installation requirements, achieving results that exceed product specifications and contributing to truly energy-saving buildings.
S-series PUMY: Compact Outdoor Units
The PUMY S-series offers side-flow type outdoor units from 7 HP to 12 HP, providing flexible installation in tight spaces. These units are ideal for small-scale offices and residences (1-phase type VKM).
Advantage of PUMY (for Residences)
A single 10 HP-12 HP outdoor unit can connect up to 29 indoor units (P15-250), allowing multiple indoor units in many rooms to be connected to one outdoor unit, saving space.
Piping Length Capabilities
PUMY units support extensive piping lengths. For CP175-225YKM2 models, total length can be up to 150m (492ft) with a farthest piping length from the first branch of 30m (98ft). Vertical differentials between indoor/outdoor units can be up to 50m (164ft) when the outdoor unit is higher, and 40m (131ft) when lower. For CP250-300YBM2 models, total length can reach 310m (1,017ft) with similar vertical differentials.
Features
- Operation Guaranteed up to 46°C: New inverter technology allows units to operate at outdoor air temperatures as high as 46°C.
- Quiet Mode: All models feature three quiet modes in addition to the normal mode, allowing selection of a suitable noise level for various applications, such as residential zones.
Features of the Branch Box
Branch boxes enable connection to Mitsubishi Electric indoor units (room air conditioners, Mr. SLIM) that do not typically support M-NET connections, offering flexible system design for various room types.
System Example
A PUMY series outdoor unit can connect to both CITY MULTI indoor units and other Mitsubishi Electric indoor units via branch boxes (PAC-MK34BC, PAC-MK54BC). This consolidates heat sources and reduces installation space.
Precautions for Unit Construction
- Capacity and number of indoor units differ when using a branch box; refer to installation manuals.
- Capacity calculations depend on the connected indoor unit; refer to installation manuals.
- Piping lengths also differ with branch boxes; refer to installation manuals.
Comparison of Piping Lengths for PUMY-Series Models with Branch Boxes
Piping lengths vary significantly when branch boxes are used. For CP250/300 models, total length can be 310m for City Multi only, but 240m for mixed systems. Maximum allowable lengths and vertical differentials also vary. For CP175/200/225 models, total length is 150m for both City Multi only and mixed systems.
Specifications of Branch Boxes
Models PAC-MK54BC and PAC-MK34BC support connecting up to 5 and 3 indoor units respectively. They operate on 1-phase power supply and have compact dimensions.
Optional Parts for Branch Boxes
Various joint pipes (MAC-A454JP-E, PAC-SG76RJ-E, PAC-493PI, MAC-A456JP-E, MAC-A455JP-E, PAC-SG71RJ-E, PAC-SG77RJ-E, PAC-SG75RJ-E), port connectors (MSDD-50BR-E, MSDD-50AR-E), outer covers (PAC-AK350CVR-E), and filter dryers (PAC-SG82DR-E) are available.
Outdoor Unit Specifications: CITY MULTI YKE-Series
The document provides detailed specifications for various outdoor unit models across different series, including PUMY-CP YKM2, PUMY-CP YBM2, PUCY-P YKE, PUCY-GP YKE, and PUCY-EP YKE. These specifications cover cooling capacity, power input, current input, EER, temperature range, indoor unit connectability, sound pressure level, refrigerant piping diameter, fan type, air flow rate, compressor details, dimensions, protection devices, refrigerant charge, heat exchanger type, and optional parts.
Key characteristics across the YKE-Series models:
- Cooling Capacity: Ranges from 20.0 kW (68,200 BTU/h) up to 168.0 kW (573,200 BTU/h) for various models.
- Power Source: Primarily 3-phase 380-400-415 V, 50 Hz or 3-phase 380 V, 60 Hz.
- EER: High efficiency ratings, generally above 3.5 kW/kW.
- Indoor Unit Connectability: Supports connecting 50% to 150% of the outdoor unit capacity, with varying quantities of indoor units (e.g., 1-12, 1-29, 1-50).
- Sound Pressure Level: Typically ranges from 57 dB(A) to 70 dB(A) depending on the model.
- Refrigerant: R410A, with varying charge amounts.
- Compressor: Scroll hermetic compressor with inverter control.
- Heat Exchanger: Cross Fin and Copper tube or Micro-Slit Fin and Copper tube, often salt-resistant corrugated fin.
- Protection Devices: Include high pressure protection, inverter circuit protection (overcurrent, overheat), compressor thermistor, and voltage protection.
- Dimensions: Units vary in size, with common heights around 1,338mm to 1,662mm and widths from 1,050mm to 1,750mm.
Note: Nominal conditions are subject to ISO 15042 or JIS B8615-2. Specifications are subject to change without notice due to continuous improvement. External static pressure options are available for some models.
High Reliability Features
1. Compressor Protection
Mitsubishi Electric compressors are designed to prevent liquid refrigerant from entering the compression part. An accumulator separates liquid and gas refrigerants, and the compressor structure is filled with low-pressure gas refrigerant. This design protects the compressor from malfunctions and damage due to liquid backflow.
Operation with One Compressor (up to 20HP)
Outdoor units can operate with a single compressor, simplifying service and reducing maintenance requirements due to fewer key parts.
Rotation Control
With combination models, outdoor units operate alternately, reducing operating load and extending service life. Units are started in sequence to equalize operating time.
Emergency Operation Mode
Emergency operation is possible via the indoor unit's remote control. In combination models, if one module malfunctions, other outdoor units can continue to operate, ensuring system protection.
2. Electric Parts Protection
- Gecko Guard: YKE models feature preventative measures like slits and bottom panel design to prevent geckos from entering the control board box, reducing malfunction risks.
- Allowable Operating Voltage Range: Operation is guaranteed even with voltage fluctuations of up to ±10% (or +20% for 380V).
- Naturally Cooled PCB: Printed circuit boards are placed in the natural air flow path for efficient air cooling, improving reliability.
- Access from Front Panel: Electrical parts are concentrated in the upper part of the panel, allowing easy replacement of PCBs and front access for maintenance.
3. Corrosion Resistance
Mitsubishi Electric products reduce corrosion effects in harsh environments (e.g., coastal areas) through specialized designs for outdoor units.
- Film Coating on PCB: Printed circuit boards are protected by a polyurethane film coating for salt corrosion resistance.
- Polyester Coated Sheet: Outdoor units are made with polyester coated steel sheets (JRA 9002 compliant) to prevent corrosion, with BS models featuring a thicker coating.
- New Heat Exchanger Design: The YKE series uses a new heat exchanger with aluminum alloy flat tubes and fins with anti-corrosion zinc treatment, effective against salt and traffic air pollution.
4. Operation Support Function
Mitsubishi Electric's M-NET system allows other indoor units to continue operation even if one unit stops due to malfunction, without special settings.
- M-NET Indoor/Outdoor Unit Communication: The M-NET transmission line can supply power, enabling automatic closing of LEV for problematic indoor units, preventing condensation and ensuring continued operation of other units.
- For Hotel Applications: If one guest room's system is unusable, air conditioning in other rooms can continue without interruption.
High Installation Flexibility
1. Flexible Wiring Design
The M-NET system offers unlimited total wiring length for CITY MULTI units and supports multiple branching levels, greatly increasing design flexibility for various buildings.
2. Flexible External Static Pressure Setting
Outdoor unit static pressure can be selected (0, 30, 60 Pa), facilitating installation on each floor of high-rise buildings or balconies, allowing connection of long exhaust hoods.
3. Long Piping Length
Piping design allows for flexibility in various building types. CITY MULTI systems support total piping lengths up to 1000m (3,280ft), with maximum allowable lengths of 165m (541ft) and farthest indoor unit from first branch of 40m (131ft).
Other Useful Functions
- Flexible Noise Setting: Low-noise mode offers four patterns (85%, 70%, 60%, 50% fan speed) for quiet operation, schedulable via AE-200E.
Indoor Unit Overview
Mitsubishi Electric offers a wide lineup of 17 types of indoor units to suit various building needs, including cassette, ceiling concealed, ceiling suspended, and wall-mounted types, ensuring comfort, quietness, and flexible air outlet placement.
4-way Airflow Type (PLFY-P VEM-PA, PLFY-EP VEM-E)
These units offer optimum airflow and advanced sensor technology.
3D i-see Sensor
- Highly Accurate People Detection: Eight sensors rotate 360° to detect human body temperature, positions, and number of people.
- Room Occupancy Energy-Saving Mode: Detects the number of people to save air-conditioning power (e.g., 1°C equivalent saving at 30% occupancy).
- No Occupancy Energy-Saving Mode: Switches to a preset power-saving mode when no one is detected (e.g., 2°C equivalent saving after 60min unoccupied).
- No Occupancy Auto-OFF Mode: Automatically turns off the air conditioner after a preset period (60-180 min) when unoccupied.
- Direct/Indirect Settings: Allows selection to block or not block airflow for individual vanes based on preference.
Seasonal Airflow
- Cooling: Saves energy by automatically switching between ventilation and cooling, maintaining comfortable effective temperature.
- Heating: Reuses accumulated heat near the ceiling by switching between circulator and heating, blowing air horizontally to push warm air down.
Automatic Air-speed Adjustment
Adjusts airflow speed automatically to maintain comfortable room conditions, starting with high-speed for quick heating/cooling and decreasing to gentle flow once the desired temperature is reached.
Easy Installation
- Temporary Hanging Hook: Redesigned panel with a temporary hanging hook improves installation efficiency.
- Electrical Box Wiring: Redesigned power supply terminal position for easier wiring.
- Increased Space for Plumbing Work: Reversed liquid/gas pipe positions and increased space around pipes for smoother installation.
Easy Cleaning
Automatic elevation panel allows easy filter cleaning, even with high ceilings (up to 4m).
Connectable to Plasma Quad Connect
The optional Plasma Quad Connect PAC-SK51FT-E can be installed on indoor units.
2-way Airflow Type (PLFY-P VLMD-E)
Features a simple panel design that blends aesthetically with ceilings and illuminations.
Vane Control
Vane angle can be selected from 7 types, including 'Horizontal fix' and 'Swing', to customize airflow. Airflow direction cannot be changed individually.
Drain Pump
Equipped as standard, the drain pump allows positioning up to 583mm from the ceiling, offering greater piping layout freedom.
1-way Airflow Type (PMFY-P VBM-E, PMFY-P VFM-PA)
These ceiling-mounted units create a spacious feel and enhance room comfort, ideal for overhead installation and when lighting/fixtures are on walls.
Expanded Line-up
New P50-P80 models are introduced for larger room sizes.
Compact Size
Unit body size is standardized at 812mm for easier installation, with a light weight of 14kg for the main unit and 3kg for the panel.
Drain Pump
Equipped as standard, allowing drain connection up to 600mm (P20-40VBM) or 850mm (P50-80VFM) from the ceiling.
Easy Installation
- Temporary Hanging Hook: Panel equipped with a temporary hanging hook for easier work.
- Easy Access to Suspension Bolt: Panel structure allows easier access for height adjustment during installation and maintenance.
Medium Static Pressure Type (PEFY-P VMA(L)-E4)
These units offer improved efficiency and flexibility.
Less Power Consumption
Improved fan wing and casing design, along with a change to high-efficient DC drain pump motor, reduce energy consumption by up to 42% (P50/140).
Air Inlet Direction
Inlet layout can be changed from rear to bottom by switching the closing board and air filter.
Drain Pump
Optionally selectable, with models for built-in or no drain pump, allowing lifting height up to 700mm.
External Static Pressure
Settable up to 150 Pa, with five-stage settings for flexible duct extension and air outlet configuration.
Compact Unit
The P63 model unit is 200mm less in width, fitting into tighter ceiling spaces due to new fan and improved air pathway.
High Static Pressure Type (PEFY-P VMH(S)-E)
These units enable flexible duct design with sufficient external static pressure.
Low Power Consumption and Weight
P40 to P140VMHS models use DC motors, reducing power consumption and unit weight.
Drain Pump
Optionally available, ensuring lift up to 550mm (P40-140VMHS, P200/250VMH) or 700mm (P200/250VMHS) for flexible piping layouts.
Fresh Air Intake Type (PEFY-P VMHS-E-F)
These indoor units are designed to supply pretreated outside air.
Intake of Outside Air
Allows fresh outdoor air intake with temperature control, improving comfort in spaces requiring high ventilation.
Flexible Air-Flow Setting
Offers four levels of external static pressure and two air-flow modes (Normal-airflow rate, High-airflow rate), each with three air-flow rates.
Controllable Outlet Air Temperature
Pre-treating intake air stabilizes room temperature for optimized comfort.
DC Fan Motor
Equipped with a higher efficiency DC fan motor and single-phase power supply for easier installation.
Drain Pump
Optionally available, allowing increased head height (Max. 700mm) for greater design flexibility.
Ceiling Suspended Type (PCFY-P VKM-E)
These units are designed for easy installation without extensive ductwork.
Sleek Design
Sleek and slim with curved lines, blending into interiors.
Auto Vane Control
Outlet vanes can be moved up and down via remote control, improving airflow and preventing drafts.
Drain Pump
Available as an option, allowing drain connection up to 600mm above the ceiling.
Automatic Air-speed Adjustment
Adjusts airflow speed automatically to maintain comfortable room conditions, starting with high-speed for quick heating/cooling and decreasing to gentle flow once desired temperature is reached.
Wall-mounted Type (PKFY-P VLM-E, PKFY-P VKM-E)
New design (VLM model) matches room interiors with a sharp, simple form and new white body color.
Low Noise
Noise level reduced by improved unit structure and line flow fan.
Improved Airflow Control
Fan speed can be set to 4 steps and auto mode. Vane angle can be set to 5 steps for tailored air conditioning.
Drain Pump
Optionally available, allowing drain connection up to 850mm (P15-50) or 800mm (P63/100).
Starmex Series (MSXY-FN/FP)
Residential indoor units with LEV kit / Branch Box for residential uses.
System Structure
CITY MULTI outdoor units can connect to CITY MULTI indoor units and Starmex indoor units via an M-NET centralized system and connection kits.
Floor Standing Exposed Type (PFFY-P YM-E, PFFY-P YMH-E)
These large capacity indoor units reduce installation and maintenance time.
Increased Adaptation to Local Needs
Both plenum blowing and rear suction are optionally selectable in addition to standard duct blowing.
Wide Ranges of Airflow Rate and Static Pressure
Offers a greater variety of airflow rates and static pressure options, with high static pressure models available.
Pulley Belt Option
Supports wider ranges of airflow rates and static pressures.
Both Large-Scale and Individual Air Conditioning
One outdoor unit can control air conditioners in large spaces and individual rooms when combined with CITY MULTI indoor units.
Multiple Units Connection
Multiple units of this model can be connected to one outdoor unit to spread air throughout a large room.
Floor Standing Concealed Type (PFFY-P VCM-E)
These units are designed for reduced power consumption and noise.
Reduced Power Consumption and Noise
Smooth airflow, downsized inner pipes, and optimized components reduce pressure loss, power consumption, and noise.
Flexible Installation Pattern
Ideal for perimeter zone air conditioning, with air inlet selectable from bottom or front suction, and option for floor standing with legs.
Smaller Footprint
The latest P32 model has a 36% smaller footprint due to redesigned inner components.
Flexible Airflow and External Static Pressure Setting
Airflow rate and external static pressure can be selected to suit various installation conditions.
Remote Controllers
Mitsubishi Electric offers a range of remote controllers for centralized and individual control of air conditioning systems.
Centralized Remote Controllers
These controllers manage multiple indoor units and provide comprehensive system oversight.
- AE-200E/AE-50E: Features a color LCD touch panel for visibility and operability. Manages up to 50 indoor units (or 200 with expansion controllers). Allows fine adjustment of airflow direction and rate by schedule. Supports energy management and error display.
- EW-50E: Can be used as an expansion controller for AE-200E, managing up to 200 indoor units. Supports apportionment of electricity charges.
- AT-50B: Advanced touch controller with a color touch panel for easy operation. Manages up to 50 indoor units. Features include operation lock, error display, temperature set limitation, and schedule operation.
- PAC-YT40ANRA: ON/OFF remote controller for up to 16 groups/50 indoor units. Features LED flashing for error indication, interlock operation with external systems, and flexible group setting.
Individual Remote Controllers
These controllers provide localized control and advanced features for individual rooms.
- PAR-41MAAM: Wired MA remote controller with a backlit LCD for easy viewing. Features include highlight display, night setback, 3D i-see sensor settings, and draft reduction.
- PAR-CT01MAA-S: MA remote controller with a full color touch panel. User-friendly with large icons, flexible display customization, and various operation panels for temperature, fan speed, and vane control.
- PAR-FL32MA / PAR-FA32MA / PAR-SL101A-E: Wireless remote controllers offering basic control functions.
- PAR-U02MEDA: ME remote controller with brightness, temperature, and humidity sensors. Features occupancy sensor for energy-saving control, touch panel with backlit LCD, and LED indicator.
- PAC-YT52CRA: Simple MA remote controller with a backlit LCD and flat design. Features vane button for airflow adjustment and can operate all types of indoor units.
BACnet® Integration
CITY MULTI systems can integrate with Building Management Systems (BMS) via EW-50E (AE-200E) using the BACnet® open transmission protocol, enabling large-scale BMS management.
