Baxi Solarflo Owner's Manual

USER GUIDE

Solar Collectors

Please read these instructions before installing or commissioning.

This Solar Thermal Domestic Hot Water System should only be installed

by a competent person.

Please leave these instructions

with the User

1.0 Installation and Handover

1.1 Information

When your Solar domestic water heating system was installed the installer should have fully commissioned the system and left it in working order. Following this they should have explained the system, its function and control including:

Heating by solar

Explained how the cylinder is heated when there is sufficient solar energy.

Heating by auxiliary heating source

Explained how the cylinder is heated if additional heat input is required due to insufficient solar energy being available (little or no sun) or additional quantities of hot water are required.

Operation of the Solar Controller

Explained the icons and their meanings displayed at the controller.

System Malfunction

Explained what to do in the event of a system fault including how to isolate the electrical supply or water supply.

System Maintenance

Explained the necessity for the system to receive regular maintenance to ensure its continued safe and efficient operation.

Literature

The Commissioning Record (see 2nd Fix Manual) should be completed and left with the user.

These instructions explain a number of the above points and should be retained as a reminder of how to operate the Solar Water Heating System. If you are in any doubt, please ask your installer for clarification or contact the Baxi Technical Enquiry Line, Telephone 0844 871 1555.

Serial Number

The appliance serial number is situated at the rear of the right hand side of the solar pump station and the model name is on the front face of the solar temperature differential controller. These should be quoted when contacting the Baxi Technical Enquiry Line.

© Baxi Heating UK Ltd 2011. 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 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 any details of the proposed use to the following address:

The Company Secretary, Baxi Heating UK Ltd, Brooks House, Coventry Road, Warwick. CV34 4LL

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.

2.0 Baxi Solarflo Description

2.1 Description

Your Solar system consists of several component par ts that work together to heat your domestic hot water supply either from the power of the sun, by conventional means (by a boiler or electric immersion heaters) or combination of both. This combination is required because the sun’s energy is not uniformly received throughout the year (some 70% of the UK’s annual radiation is received over the period April to September). The amount of sunshine hours will vary and the proportion of direct radiation (from a clear sunny day) and diffuse radiation (from partly cloudy or overcast skies) will also vary. However, on average up to 60% of a dwellings annual hot water requirement can be provided by a solar water heating system. The balance is provided by the auxiliary heating source.

Fig 1 shows the main component parts of the Baxi Solar System (unvented system).

1 Solar Collector

(Note: larger cylinders may have 2 or 3 collectors connected)

2 Solar Pump Station

3 Solar Controller

(Note: May be mounted remotely from Pump Station)

4 Solar Expansion Vessel

5 Solar Cylinder

6 Baxi Boiler Auxiliary Heating Source

(Note: Auxiliary heating may be by immersion heaters)

7 Solar Cylinder cold water controls

(Note: May not be fitted if using a cistern fed vented cylinder eg. Heatrae Sadia Megaflo)

8 Thermostatic blending valve

9 Balanced cold water supply (Accessory)

10 Energy Productivity Meter (Accessory)

11 Combi Valve with balanced supply outlet

Fig. 1 Unvented System Example

Combi Valve

* Some sensors removed for clarity

3.0 System Operation

3.1 Operating Settings

Generally the operating settings of your domestic solar hot water heating system will have been set up by your installer. For the system to operate correctly and efficiently these settings should not be altered. Section 4 details the user controls which your installer should familiarise you with during commissioning the system.

If in doubt contact a qualified solar installation engineer, alteration of some settings could adversely affect the operation of the system.

As with any heating system there are certain aspects that will require regular checking and/or maintenance. Section 6 details what these should be. Any maintenance or servicing should only be carried out by qualified personnel and be recorded in the Commissioning Maintenance and Servicing Guide supplied with the system.

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