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Baxi Ambiflo 75 Installation, Service & Maintenance Instruction

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Comp No 5132629 - Iss 2 - 7/09
Installation, Servicing & Maintenance Instructions

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  • Page 1 Comp No 5132629 - Iss 2 - 7/09 Installation, Servicing & Maintenance Instructions...
  • Page 2 Health & Safety is the responsibility of EVERYONE. This Baxi Ambiflo™ Heat Pump unit is not suitable for a one-man lift. Do not attempt to lift this unit without the appropriate equipment and/or assistance.
  • Page 3 © Baxi Heating UK Ltd 2009 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, or stored in any retrieval system of any nature (including in any database), in each case whether electronic, mechanical, recording or otherwise, without the prior written permission of the copyright owner, except for permitted fair dealing under Copyrights, Designs and Patents Act 1988.
  • Page 4 This can modify its lubricant properties and will lead to serious damage to the compressor. Refrigerant material can be hazardous. Contact Baxi Technical Enquiries 0844 871 1568 for further information. Maintenance Instructions 1. Never add oil to the appliance; the compressor is filled with polyalcohol oil, a special oil which cannot tolerate the presence of other oils.
  • Page 5 - charge the weight of R410A as per the value indicated on the unit's identification plate. 4. In case of leakage, do not complete the charge: recover the remaining refrigerant for recycling and perform a total charge. Recovery, recycling or the destruction of the fluid must be done in compliance with the laws in force in the country concerned.

  • Page 6: Health And Safety Information

    3) Plan and organise your work properly, taking account of weather conditions and the possibility of emergencies. 4) Make sure those working at height are competent. 5) Make use of appropriate work equipment. 6) Manage the risks from working on or around fragile surfaces and from falling objects. 7) Inspect and maintain the work equipment to be used and inspect the place where the work will be carried out for both access and egress.

  • Page 7: Kit Contents

    If you have fewer than five employees you do not need to write anything down, though it is useful to keep a written record of what you have done. If you employ five or more people you must record the significant findings of your assessment.
  • Page 8 Baxi Ambiflo™ training course. 4. Baxi offer a set up and test service for this product. This can be arranged by telephoning 0844 871 1568 to book the visit. Further details regarding commissioning can be found in the Commissioning booklet General Information section.
  • Page 9 Registration of the product with heateam b) Installation by an individual who has successfully completed the Baxi Ambiflo™ training course c) Completion of a suitable commissioning document which must be left on site for the end users records d) Set up and check of the product by heateam or its approved agent...
  • Page 10 Wall Mounted Brackets 5134517 Heater Module 5131500 Connection Kit ¾" Heater Module 5131508 Connection Kit 1" 2 Circuit/1 Mixer 5132426 Module 2 Zone/2 Mixer Module 5132427 Remote Service Control 5131497 (WM) Room Sensor 5132429 Outdoor Sensor 5131498 Dirt Separator 5133750 Ambilfo™...

  • Page 11: Supply Conditions

    1.3 General Description 1. The Baxi Ambiflo™ air source heat pump is an outdoor heat only unit, intended for central heating. It is a one-piece heat pump with closed and pre-charged refrigeration circuit. 2. The Baxi Ambiflo™ is available in a choice of three outputs: 7.5KW, 9.0KW and 10.5KW at typical...
  • Page 12 Please do not oversize as this can lead to overheating problems. 5. Baxi recommends that a high quality, low energy circulating pump is used in conjunction with this system. 6. These units are 230V 50Hz single phase appliances. Before carrying out any operation, check that the voltage indicated on the unit corresponds to the mains voltage.

  • Page 13: General Layout

    2.0 General Layout 2.1 Layout The Baxi Ambiflo™ air source heat pump unit includes an integral circulation pump (3 speed to optimise comfort and efficiency), small expansion vessel, pressure gauge and pressure relief valve. An additional expansion vessel may be required.
  • Page 14 12. Heat pump return (Inlet). 13. Heat pump flow (Outlet). 14. Filling / drainage of the water circuit. 15. Air vent. 16. Glands for mains cable inlet. Fig. 2 Page 8...
  • Page 15 3. Where radiators are used, the dirt separator must be fitted as shown in the hydraulic system diagrams (see Figs. 6 and 7 for relevant system). Failure to do this will affect your warranty. Where the Baxi Ambiflo™ Heat Pump is fitted to an existing system it is essential to power flush the system prior to installing the unit and fitting the dirt separator.
  • Page 16 3.2 Residential System 'Ambiflo™ Heat pump & Heater module' 1 Zone floor Note: i) This is a diagrammatical representation of the underfloor air vent position. Please refer to the appropriate instructions from the manifold supplier for details. ii) Please refer to the manifold manufacturer? instructions regarding return water temperatures and use parameter 30 to carry out any necessary adjustments.
  • Page 17 Note: i) This is a diagrammatical representation of the underfloor air vent position. Please refer to the appropriate instructions from the manifold supplier for details. ii) Please refer to the manifold manufacturer#s instructions regarding return water temperatures and use parameter 30 to carry out any necessary adjustments. iii) Please refer to the manifold manufacturer#s instructions regarding flow rate of the underfloor system.
  • Page 18 Note: i) This is a diagrammatical representation of the underfloor air vent position. Please refer to the appropriate instructions from the manifold supplier for details. ii) Please refer to the manifold manufacturer#s instructions regarding return water temperatures and use parameter 30 to carry out any necessary adjustments. iii) Please refer to the manifold manufacturer#s instructions regarding flow rate of the underfloor system.
  • Page 19 Note: i) This is a diagrammatical representation of the underfloor air vent position. Please refer to the appropriate instructions from the manifold supplier for details. ii) Please refer to the manifold manufacturer#s instructions regarding return water temperatures and use parameter 30 to carry out any necessary adjustments. iii) Please refer to the manifold manufacturer#s instructions regarding flow rate of the underfloor system.
  • Page 20 Fig. 7 Page 14 3.7 Buffer Vessel Comparison of 9kW system heat loss against time for various total volumes...
  • Page 21 3. Please refer to the guidelines & recommendation below. 4. Baxi recommend the use of a 100 litre buffer as a general solution for all installations. This is available either as part of a full system or as an accessory (Fig. 9).
  • Page 22 Volume Underfloor Radiators Valves buffer (litres) closed open Fig. 10 Page 15 4.0 Electrical 4.1 Baxi Ambiflo™ Programmable room sensor. 1. This is a Baxi System solution using the controls supplied, where no other time or temperature controls are used.
  • Page 23 * Please note the 5kW Electrical Heater has separate instructions. Please refer to these for details of the unit and its siting requirements as this can be fitted either to the rear of the Baxi Ambiflo™ Heat Pump unit, or sited remotely. Kits are available to hydraulically and electrically connect the 5kW Electrical Heater to the Ambiflo™...
  • Page 24 Page 16 4.2 Baxi Ambiflo™ Programmable room sensor with relay 1. This system is where other set back controllers for time, temperature or system controls are used. This system can indirectly control other system pumps. Important: Alternative controls must feature a reduced or set back room temperature setting.
  • Page 25 * Please note the 5kW Electrical Heater has separate instructions. Please refer to these for details of the unit and its siting requirements as this can be fitted either to the rear of the Baxi Ambiflo™ Heat Pump unit, or sited remotely. Kits are available to hydraulically and electrically connect the 5kW Electrical Heater to the Ambiflo™...
  • Page 26 demands of all points of utilisation and where appropriate making allowance for diversity. A note should be made of the power of any electrical items such as electrical showers, electrical cooker etc. to assist in diversity calculations. 5. A current limiter is available as an accessory (Part No. 5132431). In most cases it has been found not to be required, however if required it can be fitted where the diversity and / or incoming fuse rating would not be sufficient in normal cases.

  • Page 27: Installation

    System loads Diversity applied Lighting Lighting 2.4A Cooker Cooker 14.8A Shower Shower Immersion Immersion heater heater Socket outlet 13A, 13A, 6A, Socket outlet 30.6A 4A, 6A, 2A, 13A, (33A) Total for circuit 84.8A In the above example, the air source heat pump and 5kW electrical heater is 18A with diversity calculation;...
  • Page 28 Model A (m)* 0.15 0.25 * This dimension does not account for the following cases: - Installation of the hydraulic filter with shut-off valves positioned behind the unit: provide 0.30m. - Installation of a heater unit behind the unit: provide 0.25m. Fig.
  • Page 29 These components, and the surrounding system pipework, operate at high temperatures. Where young children or animals are concerned, Baxi recommend a barrier or guard to avoid tampering. The guard must be of a suitable design and not restrict the air flow through the unit. A risk assessment MUST be carried out prior to installing the unit.
  • Page 30 Ensure that the drain has a suitable fall to prevent standing water being left in the base tray. Keep the discharge drain as short as possible. Where longer pipe runs are used, Baxi recommends increasing the diameter of the pipe to reduce the risk of blockage or freezing. Any exposed pipe work must be protected against freezing with weatherproof insulation.

  • Page 31: Hydraulic Connection

    1. Please refer to the relevant system diagram in Section 3.0 for full details of the system being installed. 2. Connect the flexible lines supplied with the Baxi Ambiflo™ kit to the corresponding connection to prevent the transmission of vibration noise to the system pipework.
  • Page 32 5. The flexible lines must not be kinked when fitted. 6. Install a shut off valve if a fill/drainage connection is used. 7. Fill and pressurise the system to 3 bar to test the installation for leaks prior to connecting to the Baxi Ambiflo™ Heat Pump.
  • Page 33 5. Baxi recommend the use of rodent proof cable or conduit for all externally routed wiring. Example: The Baxi Ambiflo™ heat pump is 20m from the consumer unit, the cable is mounted enclosed in a thermal wall, the calculations point to a 10 mm cable to support the air sourced heat pump.
  • Page 34 (neutral to ground) or T.N.S regime. Power Supply Cable 3. The compressor start-up current for the Baxi Ambiflo™ Heat Pump is between 33A and 40A. This is a transitory current that falls to between 12A and 16A in normal running mode dependant on model.
  • Page 35 Example of Common Installation of Ambiflo™ System Supply Method Please refer to Fig. 19 above for details of fuse ratings and class of breaker required. Fig. 20 Installation with Current Limiter Option Fig. 21 5. After the electrical wiring is complete, check the earth impedance for compliance with the wiring regulations.

  • Page 36: Technical Data

    The commissioning details for the Baxi Ambiflo™ Heat Pump are given in the separate booklet supplied with this unit. Please see page 4 of these installation instructions for details of the commissioning service offered by Baxi. The system should be fully power flushed prior to filling and commissioning to maintain the product warranty.
  • Page 37 Flow/Return 40/45° C (Net) (Gross) 75 model 2.72 2.83 90 model 2.85 2.96 105 model 2.90 3.10 Flow/Return 30/35° C 70 model 3.33 3.53 90 model 3.53 105 model 3.66 3.89 Power Consumption (Max) 75 model 3.27 90 model 4.00 105 model 4.70 Current Consumption (Max)
  • Page 38 75 model 1.24 90 model 1.58 105 model 1.87 75 model 3.30 90 model 4.40 105 model 5.20 Available Pressure 75 model 58.00 90 model 47.00 105 model 66.00 NOMINAL OPERATING CONDITIONS Heating Outside air temperature (dry) + 7° C Outside air temperature (humid) + 6°...
  • Page 39 Depth 340mm Width 1190mm 105 model Height 1235mm Depth 340mm Width 1190mm Weights 75 / 90 model Installation Lift Weight 98kg Packaged Carton 110kg 105 model Installation Lift Weight 128kg Packaged Carton 141kg Please refer to page 2 for advice on lifting these units. Expansion Tank (Fitted) Charge pressure 1.5 bar...
  • Page 40 Pressure 3 bar Pressure Gauge 0 to 6 bar Water System Pressure 1.5 bar Recommended mains Incoming Fuse Rating 100 Amps Mains Power Supply Power supply 230V/1/50Hz Equipment Protection Index IP 24 Hermetic Compressor with thermal protection Scroll Sound insulation cover Power Supply 230V/1/50Hz Start up current...
  • Page 41 Sound Levels (10 metres Open Field) Sound power level (75) (90) (105) dB-A Sound pressure level dB-A Direct Drive Propeller Fan Motor with thermal protection, horizontal blowing (75) (90) (105) Total Air Flow 2.800 2.800 5.000 0.833 0.833 1.667 Power Input 0.140 0.140 0.280...
  • Page 42 Propeller Diameter 460 mm Power Supply 230V/1/50Hz Rotation Speed 770 rpm Water Exchanger Plate type stainless steel water treatment section Expansion System Expansion Vessel Water Capacity (75) (90) (105) litres 0.84 0.84 1.05 R410A Refrigerant Total Charge (75) (90) (105) 2.05 Circulating Pump Current...
  • Page 43 Hydraulic System Male Connection (75) (90) (105) Inlet 3/4" 3/4" 1" Outlet 3/4" 3/4" 1" Water Capacity (75) (90) (105) litres Water flow rate detection pressure differential cut-out Water filter supplied, uninstalled Page 22 Baxi Ambiflo 75, 90 Fig. 22...
  • Page 44 Baxi Ambiflo 105 Fig. 23 Water Volume in System Minimum water volume (**) before Buffer required models (75) (90) (105) litres (**) If the water volume of the system is below the minimum, a buffer tank must be installed Part No 5131503 (35 litres) Part No 5131537 (100 litres) If the water volume of the system is above 90 litres an additional expansion vessel is required.
  • Page 45 Fig. 24 System Expansion Vessel The Baxi Ambiflo™ Heat Pump has a 2 litre expansion vessel contained within the unit. This 2 litre expansion is adequate on systems that contain up to 90 litres of fluid within the complete system. Larger systems will require an additional expansion vessel.
  • Page 46 Fig. 25 Page 24...

  • Page 47: Service And Maintenance

    This can modify its lubricant properties and will lead to serious damage to the compressor. Refrigerant material can be hazardous. Contact Baxi Technical Enquiries 0844 871 1568 for further information. Maintenance Instructions 1.
  • Page 48 - replace or install a drier, - perform the "vacuum operation" at a minimum level of 0.3 mbar (static). Carry out the following operations at least once a year (the frequency depends on the installation and operating conditions): - check for any visible signs of damage. - check for leaks on the refrigerating circuit.
  • Page 49 IMPORTANT NOTE: Before carrying out any work on this unit, ensure that unauthorised access is prevented. The unit must be switched off and isolated, and also locked off if possible. Also check the discharge of the compressor capacitor. NOTE: Any maintenance of the refrigerant circuit must only be carried out by a refrigerant competent engineer.
  • Page 50 Fig. 26 7.3 Generator Shut-Down During Winter Drain the unit and disconnect the power supply. Unit full of water and power on: as the unit is equipped with an antifreeze device which actuates the water circulating pump when the temperature drops below zero, it is imperative that water can circulate between the Air Source Heat Pump and the Buffer Vessel.
  • Page 51 8. The following conditions will result in the cancellation of CE marking compliance, which shall fall under the liability of the individual who carried out these modifications - a) Parts replacement with anything other than genuine Baxi spares. b) Modifications of any sort to the refrigerating circuit.
  • Page 52 Page 28...

This manual is also suitable for:

Ambiflo 90Ambiflo 105

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