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Heating
Designed to meet
the demands of
today's heating
needs
PUHZ-W85VHA2
Certificate Number: MCS HP0002
Product Type: Heat Pumps
Product Reference: PUHZ-W50VHA2-(BS), PUHZ-W85VHA2-(BS)
PUHZ-W112VHA-(BS), PUHZ-HW140VHA2/YHA2-(BS)
Product Information
PUHZ-(H)W50-140VHA(2)/YHA2(-BS)
Ecodan Monobloc Air Source Heat Pumps
Our range of Ecodan monobloc air source heat pumps includes
5, 8.5, 11.2 and 14kW sizes. Now with the ability to cascade up to six
units of the same output, Ecodan monobloc systems offer a capacity range
from 5 through to 84kW. Designed to suit a wide number of applications,
these models offer a viable solution for the varying requirements that
domestic and small commercial applications demand.
Key Features
Self-contained unit, only requiring water and electric connections
No need for gas supply, flues or ventilation
Single phase power supply with a low starting current
Low maintenance and quiet operation
Operates with outside temperatures as low as -25ºC
Multiple unit connection
Hybrid function, for use with conventional boilers
2-zone energy efficient space heating control
Available as a standalone, packaged or semi packaged system
Energy monitoring as standard
Coastal protection models available (-BS)
Application Examples
The vast majority of UK homes
Small Retail Outlets
Dental / Doctor's Surgeries
Public Sector / Commercial Buildings
(3 phase available for 14kW)
Table of Contents
Related Manuals for Mitsubishi Electric ecodan PUHZ-W50VHA2
Summary of Contents for Mitsubishi Electric ecodan PUHZ-W50VHA2
- Page 1 Product Information Heating PUHZ-(H)W50-140VHA(2)/YHA2(-BS) Ecodan Monobloc Air Source Heat Pumps Designed to meet Our range of Ecodan monobloc air source heat pumps includes 5, 8.5, 11.2 and 14kW sizes. Now with the ability to cascade up to six units of the same output, Ecodan monobloc systems offer a capacity range the demands of from 5 through to 84kW.
- Page 2 Telephone: Dublin (01) 419 8800 Fax: Dublin (01) 419 8890 International code: (003531) Country of origin: United Kingdom – Japan – Thailand – Malaysia. ©Mitsubishi Electric Europe 2015. Mitsubishi and Mitsubishi Electric are trademarks of Mitsubishi Electric Europe B.V. The company reserves the right to make any variation in technical specification to the equipment described, or to withdraw or replace products without prior notification or public announcement.
- Page 3 • PAC-IF03IB-E (FTC2) ecodan Air Source Heat pump model Number • PUHZ-W50VHA-BS • PUHZ-W85VHA-BS • PUHZ-W85VHA(2)-BS • PUHZ-HW140VHA-BS / YHA-BS • PUHZ-HW140VHA-BS(2) / YHA(2)-BS UNITED KINGDOM Mitsubishi Electric Euro Living Environmental Systems Division Travellers Lane, Hatfield, Hertfordshire, AL10 8XB, En...
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Page 5: Table Of Contents
Contents Automatic change-over mode DHW-off condition DHW heating procedure IMPORTANT INFORMATION Page 4 Legionella prevention mode FTC1 & FTC2 differences Heating and Heating ECO mode Useful numbers Defrost operation Cooling mode INTRODUCTION Page 5 Anti-freeze mode Checklist for Ecodan Emergency mode Heat pump system overview Test run Ecodan air source heat pump... -
Page 6: Important Information
IMPORTANT INFORMATION FTC1 and FTC2 Differences The Flow Temperature Controller 2 (FTC2) has some fundamental differences to the previous Flow Temperature Controller (FTC1). It is important that these differences are fully understood in order to ensure correct installation. This manual covers all the changes which affect both the installation and the functionality of the system in detail, however the major changes are highlighted below. -
Page 7: Introduction
All goods are sold subject to our Conditions of Sale. Important Note - Included in the AEI introduction pack is the Mitsubishi Electric homeowners 3 year guarantee registration card. Please use this card to register within 30 days of commissioning or occupation (if new build), pump. -
Page 8: Checklist For Ecodan
INTRODUCTION Checklist for Ecodan This checklist has been created to help you understand the differences from other types of heating systems you may have installed. We suggest you use this checklist as a helpful summary of the main differences over conventional heating systems, but you will also need to understand and comply with all of the technical details contained within this document to ensure a successful installation. -
Page 9: Heat Pump System Overview
INTRODUCTION Heat Pump System Overview The Ecodan air source heat pump extracts thermal energy from the outside air and transfers this into a property in the form of hot water as a conventional heating system does. Due to the outputs available, domestic hot water always takes priority over space heating. The Flow Temperature Controller 2 (FTC2) targets a preset cylinder target temperature on the TH5 sensor within the cylinder pocket and communicates with the Ecodan until this temperature is achieved. - Page 10 INTRODUCTION How a heat pump works The heat pump essentially works the same way as your refrigerator but in reverse. The Ecodan is hermetically sealed (no refrigeration piping involved) with R410A refrigerant. The cycle it completes to produce heat is known as the vapour- compression refrigeration cycle: The first phase begins with the refrigerant being cold and at low pressure.
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Page 11: Ecodan Air Source Heat Pump
INTRODUCTION Ecodan Air Source Heat Pump Must be mounted external to the property in a suitable location with a minimum distance of 300mm from the nearest wall at the rear of the unit. For minimum distances on any side of the Ecodan refer to page 23. The unit should never be enclosed. -
Page 12: Technical Data
TECHNICAL DATA Model PUHZ-W50VHA-BS PUHZ-W85VHA(2)-BS PUHZ-HW140VHA(2)-BS /PUHZ-HW140YHA(2)-BS Dimensions (mm) Width 1020 Depth 330+30* 330+30* 330+30* Height 1350 Weight (kg) 134 / 148 Airflow (m /min) Nominal sound level (dBA) Low noise mode (dBA) @ 7°C Guaranteed operating range (Outdoor) - 15 ~ +35°C - 20 ~ +35°C - 25 ~ +35°C Electrical supply... - Page 13 TECHNICAL DATA Fig. 1.7 For full installation instructions on installing FTC2 refer to pages 29-40. The FTC2 unit should be supplied with the following parts 1. FTC2 unit x 1 2. Thermistor x 2 (TH1 Red Cable & TH5 Black Cable) 3.
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Page 14: Installation
INSTALLATION Pipe Work Schematic Single Zone Fig. 2.0... - Page 15 INSTALLATION Pipe Work Schematic Twin Zone Fig. 2.1...
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Page 16: Model Selection Data
INSTALLATION Model Selection Data General When checking the suitability of the Ecodan it is recommended that heat loss calculations are completed for the external building fabric plus the ventilation losses, as set out in BS5449:1990. The output of the Ecodan should then be chosen to meet this demand. -
Page 17: Ecodan System Design
INSTALLATION Ecodan System Design Fernox Boiler Buddy and TF1 A Fernox Boiler Buddy is provided with the package, this must be fitted internally on the return circuit as close to the Ecodan as possible. It should be installed fully in accordance with the manufacturers instructions on pages 57 - 59. - Page 18 INSTALLATION Installation Ecodan Primary Circuit The Ecodan primary circuit must be unvented due to the concentration of anti-freeze required in the pipework. Flexible hoses are supplied with the package which should be installed to connect the Ecodan to the system pipework to prevent resonance into the fabric of a property.
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Page 19: Electrical Connection To Ecodan
INSTALLATION Electrical Connection to Ecodan The installer must ensure that before the Ecodan outdoor unit is switched on that DIP switch SW8-3 is set to the on position. This allows the Ecodan to recognise that power for the interface is provided via the FTC2. Fig. - Page 20 INSTALLATION INSTALLATION WIRING DIAGRAMS WIRING DIAGRAMS Fig. 2.3 Note 1 - Optional relay box 1 is for use with 1 x 3kW immersion heater Note 2 - Optional relay box 2 is for use with 1 x 3kW immersion heater or 1 x 3kW boost heater Fig.
- Page 21 INSTALLATION F F T T C C 2 2 M M A A I I N N B B O O A A R R D D T T H H 1 1 Pipe flow sensor T T B B 1 1 4 4 1 1 T T B B 6 6 1 1 T T B B 1 1 4 4 2 2 S S 2 2 , , S S 3 3...
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Page 22: Electrical Connection
INSTALLATION Electrical Connection Immersion Heater Function FTC2 has the capability to directly control the immersion heater used for periodic pasteurisation of the domestic hot water storage cylinder. The cylinder target temperature and the immersion heater frequency are selectable via DIP switch settings as displayed later in this manual (page 37). Switching of the immersion heater is performed by a separate relay box, this in turn energises a Horstmann ®... - Page 23 INSTALLATION Electrical Connection Boost Heat Switch The boost heat function (Plug J2) gives the option for higher flow temperatures to be constantly targeted as opposed to weather compensated heating (Eco Heat). A standard two way switch or time clock should be wired to the boost heat terminals on the FTC2.
- Page 24 INSTALLATION Electrical Connection PAR-W21MAA Remote Controller The PAR-W21MAA controller is supplied with the FTC2(PAR-IF031B-E) package. Its primary function is as a commissioning tool to set the target flow temperatures for central heating mode and to set the cylinder target temperature for hot water mode. To adjust all functions see pages 41 - 50. It has a display which shows the target and actual flow temperatures as well as the operating mode.
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Page 25: Installation: Outdoor Unit
INSTALLATION: OUTDOOR UNIT Location Requirements Minimum Requirements for location of Ecodan. for PUHZ-HW140 YHA(2)-BS/VHA(2)-BS units. Fig. 3.0... -
Page 26: Ecodan Installation Manual
Make sure to use accessories authorized by Mitsubishi Electric and ask an Accredited Installer or authorized technician to install them. If accessories are improperly installed, it may cause water leakage, electric shock or fire. -
Page 27: Installation Location
INSTALLATION: OUTDOOR UNIT around the outdoor unit if such condensate is likely to cause problems such as freezing over in cold weather. When installing the unit within the grounds of a hospital or a building where communication equipment is installed, you may need to take measures to reduce noise and electronic interference. Inverters, home appliances, high-frequency medical equipment and radio communications equipment can cause the air to water heat pump to malfunction or to breakdown. -
Page 28: Drainage Piping Work
INSTALLATION: OUTDOOR UNIT INSTALLATION: OUTDOOR UNIT at a higher position or installing a hood on the air intake. This can reduce the airflow and the unit may not operate properly. at a higher position or installing a hood on the air intake. This can reduce the airflow and the unit may not operate properly. -
Page 29: Water Piping Work
INSTALLATION: OUTDOOR UNIT Water Piping Work A Water Outlet WATER PIPING CONNECTION: B Water Inlet Connect the water pipes to the outlet and inlet pipes (ISO 228/1- G1B) Inlet and outlet pipes position is shown on Fig 3.3 Install the hydraulic filter at the water intake Maximum allowance torque at the water piping connection is 50N/m Check if water leaks after installation Inlet water gauge pressure must be between 0-0.3MPa... - Page 30 INSTALLATION: OUTDOOR UNIT PUHZ-W85VHA PUHZ-HW140VHA PUHZ-HW140YHA Outdoor unit model PUHZ-W50VHA (2)-BS (2)-BS (2)-BS ~/N (single), ~/N (single), ~/N (single), 3N (3 phase), Outdoor unit power supply 50Hz, 230V 50Hz, 230V 50Hz, 230V 50Hz, 415V Outdoor unit Circuit Breaker Capacity 16 A 25 A 40 A 16 A...
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Page 31: Installation: Ftc2
Make sure to use accessories authorised by Mitsubishi Electric and ask an Accredited Installer or authorised technician to install them. If accessories are improperly installed, it may cause water leakage, electric shock or fire. - Page 32 INSTALLATION: FTC2 Do not touch any switch with wet hands. There may be a risk of an electric shock. After stopping operation, make sure to wait at least 5 minutes before turning off the main power. Otherwise, it may cause breakdown.
- Page 33 INSTALLATION: FTC2 Connecting the wired remote controller CONNECTING THE WIRED REMOTE CONTROLLER TO FTC2 Connect the wired remote controller cable to 5 and 6 on the terminal block (TB62) on the FTC2 controller. Fig. 4.3 Wire No. x size (mm²) : 2 x 0.3 (non-polar) The 5m wire is attached as an accessory.
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Page 34: Connecting Thermistor Cable
INSTALLATION: FTC2 WIRING SPECIFICATION OF EXTERNAL INPUT Locally supplied parts Connecting thermistor cables CONNECTING THERMISTOR CABLE (TH1) Connect the thermistor for the actual flow water temperature to 1 and 2 on the terminal block (TB61) on the FTC2 controller. When the thermistor cables are too long, cut them at the appropriate length. Do not bend them in the FTC2 unit. Thermistor contacts are non polar. - Page 35 INSTALLATION: FTC2 Domestic hot water (DHW) off condition Domestic hot water can be selected in 2 ways Pattern 1. An external input or remote controller is used to switch to domestic hot water mode. Domestic hot water pattern 1 will turn off when the domestic hot water tank reaches set temperature consecutively for 1 minute.
- Page 36 INSTALLATION: FTC2 HEATER SETTING Set Dip SW1-4 according to whether the system has an Immersion SW 1-4 Setting heater. Without immersion heater Table 2.1 With immersion heater SW 1-5 Setting Set Dip SW1-5 according to the location of Booster heater. For both domestic hot water and heating Table 2.2 For heating only or without booster heater...
- Page 37 INSTALLATION: FTC2 Electrical heater phase in Domestic Hot Water mode HEAT PUMP UNIT Heat pump unit operation changes according to the Dip SW setting. Heat pump unit keeps running with the following switch setting. Electrical heater phase TYPE A. SW1-5 OFF (Booster heater: for both DHW and Heating) Heat pump unit stays in thermo OFF with the following switch setting.
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Page 38: Switch Setting Of Ftc2
INSTALLATION: FTC2 Heating and Heating ECO mode. Choice of either Heating or Heating ECO mode is made using the PAR-W21MAA or local controller. Both modes uses the Ecodan to heat the water to the set point (THE) and then allow for the use of Booster heaters if present on the heating circuit to raise the space heating flow temperature (TH1) if needed, however radiators should ideally be sized for lower flow temperatures in order to maximise system performance. - Page 39 INSTALLATION: FTC2 INSTALLATION: FTC2 Dip switch Factory Function Setting Dip switch Factory Function SW1-1 System Select SW1-1 SW1-2 ON/OFF Input Change mode Input Change Temp. Input Setting SW1-1 System Select SW1-1 SW1-2 ON/OFF Input Change mode Input Change Temp. Input Remote controller Remote controller Remote controller...
- Page 40 INSTALLATION: FTC2 Flow chart for Automatic change over mode: When switching operation mode, Domestic Hot Water always has the priority. START HEATING (1 Minute) DHW mode operation ON/OFF Heating mode Heating operation ON/OFF Comp OFF Fig 4.1 Heating mode is carried out at least 1 minute before switching for domestic hot water mode. This is to allow users to change settings in heating mode.
- Page 41 INSTALLATION: FTC2 Before Test Run: Check After completing the installation and the wiring and piping of the local application and outdoor units, check for refrigeration leakage, looseness in the power supply or control wiring, wrong polarity, and disconnection of one phase in the supply. Use a 500-volt megohmmeter to check that the resistance between the power Warning: Caution:...
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Page 42: Recycling And Unit Disposal
This symbol mark is for EU countries only. This symbol mark is according to the directive 2002/96/EC Article 10 Information for users and Annex IV. Your Mitsubishi Electric product is designed and manufactured with high quality material and components which can be recycled and reused. This symbol means that electrical and electronic equipment, at their end-of-life, should be disposed of separately from your household waste. -
Page 43: System Set-Up
SYSTEM SET -UP Change Language The initial language setting is English. If you require to change this, follow the 4 steps below. The instructions in this guide use English for the annotated displays, whatever language is selected the sequence combination of the buttons will not alter. Normal Display Step 1: Hold down buttons D and E for 2 seconds. -
Page 44: System Set-Up Procedure
SYSTEM SET -UP System Set-up Procedure Controller: PAR-W21MAA The PAR-W21 controller is used to optimise the running of the system, set-up the heating parameters and select the available modes. It should not be used for timing purposes, instead use the 2 channel time clock. Listed below are all the available buttons and displays on the LCD screen. -
Page 45: Change Language
SYSTEM SET -UP Heating Set-up (Heating ECO Mode) Whilst heating a property Heating ECO is the recommended mode to use instead of just the heating mode. Using this will enable the Ecodan to run more efficiently. This function sets the target temperature depending on the outdoor temperature, weather compensation is explained on page 46. -
Page 46: Hot Water Set-Up
SYSTEM SET -UP Hot water set-up To set- activation of the hot water mode is required. Hot water temperatures can not be changed dependent on the outdoor conditions, they will remain constant. The factory settings for the flow temperature is 50°C but this should be increased to 55°C. - Page 47 SYSTEM SET -UP Locking Function To ensure that the Ecodan is only operated by signals from the two channel programmer it is necessary to undertake the following procedure and lock the controller as part of the commissioning stage. When this function is activated it is not possible to unnecessarily operate the Ecodan when there is no demand for either central heating or hot water.
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Page 48: Weather Compensation
SYSTEM SET -UP Weather compensation: These are used for variable operating conditions. At cooler outdoor temperatures the flow temperature will be hotter; while warmer outdoor temperatures provide very little heating. A cut-off temperature will not provide any heating. These available when Heating ECO mode is activated, this is a far more efficient way to operate Ecodan. The recommended settings are listed within table below. - Page 49 SYSTEM SET -UP Underfloor heating Heat pumps provide lower flow temperatures than traditional gas fired boilers, this means that the installation conditions and heat emitters need to be managed carefully. These lower flow temperatures suit the conditions required for under-floor heating systems and if installed and designed correctly can deliver a more comfortable, consistent temperature whilst also increasing the efficiency.
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Page 50: Inserting Desired Temperatures
SYSTEM SET -UP Inserting desired temperatures Once the required modes have been activated the required temperatures need to be inserted, this is a separate process that Step 2: Step 1: Normal From the regular display holding button H will Display activate the controller. -
Page 51: Error Codes Indication
SYSTEM SET -UP Error Codes Indication If the ON lamp and display 10 are both blinking: This means that the Ecodan is out of order and operation has been stopped (and cannot resume). Take note of the indicated unit number and have entered contact number to be... -
Page 52: Commissioning
COMMISSIONING System Commissioning Procedure Ensure that anti-freeze and inhibitor is added to the primary loop at a concentration as recommended by the manufacturer, all pipework must be fully insulated between tank and outdoor unit. The outdoor unit should be left in standby for 12 hours before first time start up to prime the compressor. -
Page 53: Time Clock Operation Patterns
COMMISSIONING Time Clock Operation Patterns The Ecodan system incorporates hot water demand The most economical way of operating the system is priority this means that if there is a demand for both to have it running at the lowest flow temperature modes hot water will always occur before space possible to suit the properties thermal losses. -
Page 54: Domestic Hot Water Immersion Heater
COMMISSIONING Domestic hot water immersion heater As the Ecodan can recover a domestic hot water cylinder to 55°C precautions should be made to raise the temperature to 60°C or 65 C dependant on DIP SW2-6 periodically for pasteurisation. This is carried out automatically with the immersion heater energised via a relay box which in turn is powered by FTC2. -
Page 55: Service And Maintenance
SERVICE & MAINTENANCE Service & Maintenance The Ecodan must be maintained on an annual basis. A maintenance check sheet is supplied to all Accredited Ecodan Installers who attend the training. The basic requirements are: Clean the outdoor heat exchanger Visual inspection for oil or leaks Check the integrity of the pipework insulation Check for loose electrical connections Check compressor operating current... -
Page 56: Products
PRODUCTS Fernox Protector HP-5c Concentrated heat transfer fluid suitable for use in Air Source Heat Pumps and underfloor heating systems Frost protection from -4°C to -14°C Protects against corrosion, limescale and bacterial contamination Non-toxic Compatible with all materials commonly found in a heat pump and underfloor heating sys- tems pH stable Product Uses... -
Page 57: Sentinel R600
Sentinel R600 Thermal Fluid for Air Source Heat Pump systems: Effectively controls corrosion and scale Suitable for all metals including aluminium Effective frost protection Low toxicity Manufactured under a quality system conforming to ISO9001 Easy to handle Application Sentinel R600 is a multi-purpose inhibited anti-freeze formulated to prevent corrosion and scale in Air Source Heat Pump systems including those containing aluminium components. -
Page 58: Fernox Boiler Buddy
PRODUCTS Fernox Boiler Buddy treatment products, the Boiler Buddy is a premium quality in-line, high efficiency magnetic filter with patented flux plates developed for use in Formula 1 motor racing. Unlike other conventional or magnetic filters, Boiler Buddy not only traps magnetite to sub-micron levels, it does so without restricting the water flow, even when full. - Page 59 PRODUCTS Points to consider Once installed, secure the tamper-proof tag to avoid accidental opening. The tag must be When selecting a position to install a Boiler replaced after cleaning the core. Complete the Buddy beware of electrical connections in the Boiler Buddy installation sticker and apply to vicinity, as these will be hazardous if they come the boiler.
- Page 60 PRODUCTS 13. Once the body is assembled, place the body clamp over the flange and push the lever on the latch to the secured position. 14. Pass the replacement tamper-proof tag through the slot in the latch ensuring that it also passes through the bridge on the latch.
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Page 61: Commissioning Report
ENGINEERS FORMS Commissioning Report SITE ADDRESS INSTALLING CONTRACTOR SITE NUMBER COMMISSIONING ENGINEER AEI CERTIFICATE NO. COMMISSIONING DATE EQUIPMENT SYSTEM REFERENCE PURCHASED FROM LOCATION BEFORE RUNNING THE SYSTEM, CARRY OUT A FULL PRE-COMMISSIONING CHECK OF THE FOLLOWING POINTS Add suitable antifreeze concentration in accordance with manufacturers' recommendations Check air charge is in expansion vessels Pressurise primary circuit to approximately 1.5 bar Open all isolating valves... -
Page 62: Engineers Forms
ENGINEERS FORMS Pre-Commissioning System and Installation Check List No SYSTEM AND INSTALLATION STATUS REMARKS NOTES INSTALLATION OUTDOOR UNIT LOCATION INDOOR UNIT MAINTENANCE AND ACCESS OUTDOOR UNIT GOOD POOR TO REMOVE COVERS CYLINDER/ INDOOR UNIT GOOD POOR SPACE AVAILABLE FOR AIR FLOW OUTDOOR UNIT GOOD POOR... -
Page 63: Maintenance Sheet
ENGINEERS FORMS Maintenance Sheet Contractors Name Engineers Name Site Name Site Number Cylinder Maintenance Mechanical Tasks Frequency Records / Notes 1. With the water supply turned off, remove the screen from the strainer in Major Visit the combination inlet valve and clean off any dirt 2.With the water supply turned off and the hot water taps open, check the Major Visit expansion vessel charge pressure and top up as necessary... - Page 64 Frequency of Visits: Major Visit Once per year Mitsubishi Electric recommends that the frequency of maintenance visits to be a maximum of 12 months between inspections. Frequency of maintenance may increase dependent upon the equipment environment and local water conditions e.g.
- Page 65 Country of origin: United Kingdom – Japan – Thailand – Malaysia. ©Mitsubishi Electric Europe 2011. Mitsubishi and Mitsubishi Electric are trademarks of Mitsubishi Electric Europe B.V. The company reserves the right to make any variation in technical specification to the equipment described, or to withdraw or replace products without prior notification or public announcement.