Baxi Ambiflo Operation instructions

© Baxi Heating UK Ltd 2009
AmbifloTM Heat Pump System
7kW to 10.5kW Inclusive
Air to Water Heat Pump
for
Outdoor Installation
User’s Operating Instructions

2© Baxi Heating UK Ltd 2009
CE Marking
This product is CE marked and conforms to the essential requirements of the following
Directives:
- Low voltage no. 73/23 EEC, modified 93/68 EEC.
- Electromagnetic Compatibility no. 891336 EEC, modified 92/31 and 93/68 EEC.
Electrical equipment is in accordance with standard EN 60 335-2-40
The following standards and directives should also be considered when installing this unit.
Current Wiring Redulations BS 7671
HVAC TR/30 Guide to good practice - Heat pumps
BS EN 15450: 2007 Heating systems in buildings - Design of heat pump heating systems
EC Regulation No 842/2006 on certain fluorinated greenhouse gases: Supplementary guidance
for stationary refrigeration air conditioning and heat pumps
© 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.
Applications for the copyright owner’s permission to reproduce or make other use of any part of this publication should be made,
giving details of the proposed use, to the following address:
The Company Secretary, Baxi Heating UK Ltd, The Wyvern Business Park, Stanier Way, Derby, DE21 6BF.
Full acknowledgement of author and source must be given.
WARNING: Any person who does any unauthorised act in relation to a copyright work may be liable to criminal prosecution and
civil claims for damages. ISO 9001
FM 00866

3
© Baxi Heating UK Ltd 2009
CONTENTS
1.0 General Information 4
2.0 Introduction 5
3.0 Operating the Appliance 6
4.0 Other Information 9
5.0 Notes 11
Section Page

4© Baxi Heating UK Ltd 2009
1.1 Introduction
1. Thank-you for purchasing the Baxi AmbifloTM Heat Pump. This
booklet explains how the unit functions and gives details of how
to operate it to give the optimum comfort levels. It also contains
some important information regarding safety of operation, and so
please take time to read it carefully.
1.2 Warranty Details
1. The Baxi AmbifloTM system includes a one year parts and
labour guarantee. The buffer vessel, where fitted, comes with a
2 year parts warranty. The cylinder’s stainless shell has a 25 year
warranty.
1.3 Installation and Handover
1. When your Baxi AmbifloTM heat pump was commissioned, the
engineer should have explained the system, its function and
controls including:
• Heating by Heat Pump - How the heat pump heats the
property, either on its own or in conjunction with an Electrical
Heater.
• Heating by Auxiliary Source - The operation of any auxiliary
heating source used in conjunction with the heat pump, whether
automatic or manual.
• Operation of the Heat Pump Controller - A demonstration of
the basic operation of the unit and an explanation of the
controller’s icons and functions.
• Defrosting of the Unit - Occasionally, frost will form on the
rear of the unit across the finned heat exchanger. This is a
normal function of the Heat Pump’s operation and should not
cause concern to the user. This function is performed
automatically by the unit as and when necessary. During the
defrosting phase, water vapour may be seen around the unit as
the frost melts. The unit will return to the heating mode
automatically when the defrost phase is completed.
• System Malfunction - What to do in the event of a system
fault including how to isolate the electrical supply or water
supply.
• System Maintenance - The Baxi AmbifloTM Heat Pump requires
regular maintenance to ensure its continued safe and efficient
operation. The service intervals and any maintenance required to
keep the unit in good working order.
• Literature - This should have been left with the user by the
commissioning engineer. These instructions explain a number of
the above points and should be retained as a reminder of how
to operate the Baxi AmbifloTM heating system. If you are in any
doubt, please ask your installer for clarification, or contact the
Baxi Technical Enquiry Line, Telephone [phone].
1.0 General Information

5
2.0 Introduction
© Baxi Heating UK Ltd 2009
2.1 Description
1. Your Baxi AmbifloTM heat pump system consists of several
component parts that work together to heat your central
heating system water.
2. A heat pump is a device which uses a little electrical energy to
take heat energy from the low temperature outside air and
convert it to useful high temperature heating in your home. For
every unit of electrical energy used, several units of heat are
delivered. So, relating the energy purchased to the energy
delivered, heat pumps are extremely efficient.
2.2 Domestic Hot Water
1. Please note that an auxiliary source of heat is required for
your domestic hot water, such as an electric immersion heater
for example.
2.3 Electrical Heater
1. When the outside temperature is extremely low, an auxiliary
electrical heater in the Baxi AmbifloTM Heat Pump system will
operate to maintain a satisfactory comfort level in your home.

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3.0 Operating the Appliance
© Baxi Heating UK Ltd 2009
3.1 Operating Settings
1. Your commissioning engineer should have set up the
operating settings of your Baxi AmbifloTM Heat pump.
2. For the system to operate correctly and efficiently these
settings should not be altered. This section details the user
controls, which your installer should familiarise you with during
commissioning the system. These controls are used to set room
temperatures and operating times.
3. If you are in any doubt please contact your installer or a
qualified heat pump installation engineer. Alteration of some
settings could adversely affect the operation of the Baxi
AmbifloTM system and may also affect the warranty of the unit.
4. As with any heating system there are certain aspects that will
require regular checking and/or maintenance. Any maintenance
or servicing should only be carried out by qualified personnel.
5. If the AmbifloTM has been shut down for a period and turned
off at the isolator, it is important to check the system water
pressure prior to switching the isolator back on. The water
pressure gauge on the right hand side of the unit should show a
minimum of 1bar pressure. If the pressure is below this, top up
the system using the filling point provided. If you are unsure of its
position, or cannot identify it, contact your installer who fitted
the Heat Pump.
3.2 Operating the Time and Temperature Controller
1. The Baxi AmbifloTM Heat Pump has been configured to work
at its optimum efficiency by your commissioning engineer and
the external settings should not be altered.
2. The heating settings are controlled via the Aquaset Controller
which is fitted in your property. Your installer should have shown
you its location and functions.
3. The controller’s icons are shown in Figs 1 and 2 and a
description of the unit’s functions is given below. Fig 1 shows the
display and the user buttons; Fig 2 shows a key of the control
icons and their meaning.
3.3 Time and Date Setting
1. Set the dial to ‘Time and Date’ (Fig. 2 Item 7) to display the
time.
2. Press the ‘+’ button once and the small numbers on the left
hand side of the display will flash. These are the days of the week
shown as 1 to 7. Set the day by using the ‘+’ and ‘-’ buttons then
press ‘OK’.
3. The time will now flash. Set the time using the ‘+’ and ‘-’
buttons then press ‘OK’.
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1
3
2
9
8
7
5
4
6
1Not applicable for U.K.
2Holiday mode
3Set back mode
4Clock
5Heat mode
6Off
7Time and date settings
8Zone 1 programme
9Zone 2 programme
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‘+’ button
‘OK’
‘-’ button
Fig. 1 Aquaset Controller
Fig. 2

7
3.0 Operating the Appliance
© Baxi Heating UK Ltd 2009
3.4 Setting the Ambient Room Temperature
1. To set the required ambient room temperature set the Aquaset
dial to ‘Heat’ mode (Fig. 2 item 5) and adjust the temperature
using the ‘+’ and ‘-’ buttons.
2. Rotate the Aquaset dial to ‘Clock’ (Fig. 2, item 4) to display the
temperature. The day of the week is shown at the left hand side
and the programme timing is shown along the bottom of the
display with the current time segment flashing.
3.5 Setting the Programme in the Heating Zones
To set Zone 1.
1. Turn the Aquaset dial to ‘Z1’ (Fig. 2, item 8) and ‘PrG 1’ will be
displayed.
2. Repeated pressing of ‘OK’ will toggle between 1 to 7 for the day
of the week.
3. Along the bottom of the display is a 24 hour clock shown in half
hour segments.
4. There is one 24 hour timescale and two rows programmable.
5. The ‘+’ button sets the ‘ON’ periods shown by the top row (Fig.
3). The ‘-’ button sets the ‘OFF’ periods shown by the bottom row.
IMPORTANT: A reduced room temperature setting (set-back
- see Section 3.7) will be maintained during off periods,
maximising efficiency and comfort.
6. Press ‘OK’ to confirm the settings then select the next day.
Repeat as required for the 7 day period and then press ‘OK’. The
days need to be individually set as the timings cannot be copied
across.
7. If a second heating zone is part of the system, turn the Aquaset
dial to ‘Z2’ (Fig. 2, item 9) and repeat the above procedure for
heating Zone 2.
3.6 Adjustment of the Return Water Temperature
to compensate for excessive heating or cooling
1. Turn the dial on the Aquaset controller to the ‘OFF’ position
(Fig 2, item 6)
2. Press and hold the ‘+’ and ‘-’ buttons (Fig 1) simultaneously for
approximately 5 seconds until ‘Para’ is shown.
3. Press the ‘-’ button to move the small arrow on the left hand
side of the display down to ‘2’ (Fig 3) and press ‘OK’. ‘0000’ will
now be displayed, with the left hand zero flashing.
4. Use the ‘+’ and ‘–’ buttons to enter the password 1958. The ‘+’
button increases the value shown and the ‘–’ button decreases the
value. To move between the four zeros press the ‘OK’ button.
5. When the number is complete, press ‘OK’
6. ‘P20’ will now be displayed. Scroll up using the ‘+’ button to go
to parameter P30. This is used to alter the system return water
temperature setting.
7. Press ‘OK’
8. Use the ‘-’ button to reduce the temperature, or the ‘+’ button
to increase the temperature on the display depending on the
system requirements.
9. Press ‘OK’ to confirm the temperature and P30 will be displayed
again.
10. Return the Aquaset dial to the ‘Heat’ position (Fig 2, item 5).
NOTE: Following any adjustments, several hours of running
may be required before any effect is noticed.
Fig. 3 Timer segments
Aquaset Display

8
3.0 Operating the Appliance
© Baxi Heating UK Ltd 2009
3.7 Off Setting
1. Do not use this setting. For overnight periods use the Set
Back function and for holiday periods use the Holiday function
as described below. For a complete shut down the isolator
adjacent to the unit should be used.
3.8 Set Back Function
1. Set back is used to maintain an overnight temperature and
will have been set by your commissioning engineer.
3.9 Holiday Function
1. This is set to avoid freezing and will maintain a temperature
of 12°C when set in this mode.
3.10 Cool Function
1. This function is not available.
3.11 System Parameters
1. Certain system parameters may be viewed by the user if
necessary. From any of the available Aquaset Controller dial
positions (Fig 1), press the ‘+’ and ‘-’ simultaneously for
approximately 5 seconds until ‘PArA’ is shown in the display.
2. To the left of the word ‘PArA’ there is a small arrow head
and a list of numbers from 1 to 7 (Fig 4). Select the number ‘1’
to access the user values using the ‘+’ and ‘-’ buttons.
3. Press ‘OK’ to access the first user parameter and ‘P01’ will be
displayed. Pressing ‘OK’ again will display the current value of
the selected parameter (e.g. 14°C). Press ‘OK’ again to return
to the parameter number ‘P01’.
4. Use the ‘+’ or ‘-’ buttons to access the other parameters and
view the settings using the ‘OK’ button as described above.
5. See Table 1 for the user values. Please note that the values
shown in this table are dependent on the type of system
installed, so not all the values given will be accessible.
6. To exit the parameter menu, press and hold the ‘OK’ button
for 5 seconds.
3.12 Alarms
1. Table 2 shows a list of alarm codes which may be displayed
by your Heat Pump if a fault condition occurs. If an alarm code
is shown please contact your Service & Maintenance engineer.
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‘‘GGrr’’oorr‘‘PPPPEE’’ffllaasshhiinngg..TThheesseeaarreetteemmp
poorraarryyooppeerraattiinnggccoonnddiittiioonnss
aannddddoonnoottiinnddiiccaatteeaaffaauulltt..
AAffllaasshhiinnggddiissppllaayywwiitthhoouuttaannaallaarrmmccooddeeiinnddi
iccaatteesstthhaatttthhee
wwaatteerrrreettuurrnntteemmppeerraattuurreeiissbbeelloowwtthheemmiinniimmuummssaaffeevvaalluuee..
CCoonnttaaccttHHeeaatteeaammiifftthheepprroob
blleemmppeerrssiissttss..
1
2
3
4
5
6
7
P01 Outside temperature
P02 Installation water return temperature
P03 Installation water outlet temperature
P04 Result water temperature setpoint, zone 1
P05 Result water temperature setpoint, zone 2
P06 Water temperature, zone 1
P07 Water temperature, zone 2
P08 Ambient temperature, zone 1
P09 Ambient temperature, zone 2 (floor)
P10 Generator output status
P11 Generator mode output status (h/c)(1=h)
P12 Outlet status, support heater elec - 1
P13 Outlet status, support heater elec - 2
P14 Outlet status, support heater elec - 3
P15 Outlet status - water pump zone 1
P16 Outlet status - water pump zone 2
P17 Outlet status - water control zone 1
P18 Outlet status - valve control zone 2 (floor)
In heating mode, the generator fault causes the
installation to switch to Frost Protection mode. It is
possible to restart in heating mode by pressing and
holding OK. The symbol is displayed.
Attention, in this case, heating is provided only by
the supplementary electric heating.
Ext. air probe fault
The units
displays
Generator fault The units
displays
Heater fault
Installation water return probe
fault
Ambient probe fault Z1
Output water probe fault
installation
Ambient probe fault Z2 (in
the case of 2 zones only)
Water probe fault, zone 1 (in
the case of 2 zones only)
Communication or system
fault
Water probe fault, zone 2 (in
the case of 2 zones only)
Communication fault with
zone 1 board
High water temperature fault *
Communication fault with
zone 2 board
Water output fault
‘1’ = User Access
‘2’ = Installer Access Only
Fig. 4 User Access to System Parameters
Table 1 - Parameter Settings Accessible to User
Table 2 - Alarm Codes
Temporary generator condition.
Circulating pumps stopped
due to no demand.
(Temporary condition).
* Manual reset by stopping the device (OFF). Contact your Service & Maintenance engineer.

9
4.0 Other Information
© Baxi Heating UK Ltd 2009
4.1 Tarriffs
There are a variety of electricity tariffs on offer to suit this type
of appliance. Baxi suggest contacting your local energy supplier
for the details of these tariffs. It may also be advisable to
investigate alternative energy suppliers to compare the costs.
4.2 Important safety notes
1. If fluid or vapour is discharged from the Pressure Relief Valve
or from the Heat Pump itself, isolate the power supply to the
Baxi AmbifloTM Heat Pump and contact Heateam or a qualified
heat pump engineer.
2. Familiarise yourself with the controls and instructions supplied
with the Heat Pump and follow manufacturer's instructions in
the event of a fault.
3. The pipework between the heat pump and the property can
be hot. The installer should have insulated these pipes. This
insulation is important for the safe operation of the unit so in
the event of any damage contact your installer to arrange a
repair. Do not stand on the pipes around the Heat Pump unit
as injury or damage may occur.
4. If the electrical supply for the heat pump system is
interrupted it will not operate. When the power supply is re-
established it may be necessary to reset the clock, for details of
this, please refer to Section 3.3 ‘Time and Date Setting’..
Programme settings are stored by the controller and should not
need resetting when power is restored.
4.3 Guarding
IMPORTANT - This unit contains electrical components, high
temperatures, pressure, and moving parts. Where young
children or animals are concerned, Baxi recommend a barrier
or guard to avoid tampering.

10
4.0 Other Information
© Baxi Heating UK Ltd 2009
4.4 Servicing and Maintenance
1. To ensure the continued safe and efficient operation of your
Baxi AmbifloTM heat pump it is essential that it is checked and
serviced regularly by an approved qualified Heat Pump engineer.
2. The servicing interval may vary depending on the location of
the unit. Servicing may need to be carried out more frequently.
Your installer should be able to advise about the service interval.
3. In the event of a warranty claim it will be necessary to show
that the routine maintenance has been carried out in accordance
with the requirements specified in the Installation Instructions.
Failure to maintain the system may invalidate your warranty.
4.5 Disposal
1. This unit must not be crushed or incinerated.
2. The Baxi AmbifloTM Heat Pump contains a number of
components that must be disposed of under controlled
conditions. Under no circumstances should this unit be disposed
of at any Local Authority refuse site without first identifying the
special components to the site operatives or manager. If you are
in any doubt about disposing of this unit at the end of its
lifecycle, contact the Local Authority, Baxi, or your installer.

11
5.0 Notes
© Baxi Heating UK Ltd 2009

© Baxi Heating UK Ltd 2009 Comp No5132630 - Iss 2 - 7/09
All descriptions and illustrations provided in this leaflet have been carefully
prepared but we reserve the right to make changes and improvements in our
products which may affect the accuracy of the information contained in this
leaflet. All goods are sold subject to our standard Conditions of Sale which are
available on request.
BAXI
A Trading Division of Baxi Heating UK Ltd (3879156)
A Division of Baxi Group
Brooks House, Coventry Road, Warwick. CV34 4LL
Service support and Technical support 0844 871 1568
Website www.baxi.co.uk
e&oe