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GRANT ENGINEERING (UK) LIMITED

Hopton House, Hopton Industrial Estate, Devizes, Wiltshire, SN10 2EU
Tel: +44 (0)1380 736920   Fax: +44 (0)1380 736991
Email: [email protected]   www.grantuk.com

This manual is accurate at the date of printing but will be superseded and should be disregarded if specifications and/or appearances are changed in the interests of continued product improve

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ment. However, no responsibility of any kind for any injury, death, loss, damage or delay however caused resulting from the use of this manual can be accepted by Grant Engineering (UK) 

Limited, the author or others involved in its publication.

All good sold are subject to our official Conditions of Sale, a copy of which may be obtained on application.

© Grant Engineering (UK) Limited. No part of this manual may be reproduced by any means without prior written consent.

IMPORTANT NOTE FOR USERS

These installation instructions are intended to guide the installer 

in the installation of the Grant Combined Volumiser/Low Loss 

Header.

SPECIAL TEXT FORMATS

The following special text formats are used in these instructions 

for the purposes listed below:

! WARNING !

Warning of possible human injury as a consequence of not 

following the instructions in the warning.

! CAUTION !

Caution concerning likely damage to equipment or tools 

as a consequence of not following the instructions in the 

caution.

! NOTE !

Used for emphasis or information not directly concerned 

with the surrounding text but of importance to the reader.

Page 2

PRODUCT CODES COVERED

These instructions cover the following product codes:

Product code

Product Description

HPIDSYSLLHKIT

Grant Combined Volumiser / Low Loss Header

SERVICING

The Low Loss Header/Volumiser should be inspected at least 

every twelve months, when the heat source and/or heating 

system is serviced.

Summary of Contents for HPIDSYSLLHKIT

Page 1: ...UK DOC 0184 Rev 0 3 PROVISIONAL February 2022 Grant Combined Volumiser Low Loss Header Installation Instructions...

Page 2: ...y means without prior written consent IMPORTANT NOTE FOR USERS These installation instructions are intended to guide the installer in the installation of the Grant Combined Volumiser Low Loss Header S...

Page 3: ...RICAL 10 4 1 General 10 4 2 Electrical connections 10 4 3 Immersion heater 11 4 4 Electrical connections between lead and supplementary heat pumps 12 5 OPERATION 13 5 1 General 13 5 2 Aerona heat pump...

Page 4: ...nt Combined volumiser low loss header is an insulated rectangular tank fitted with an integral 3kW electric immersion heater This is housed within a weatherproof external casing with a removable cover...

Page 5: ...0 Inlet outlet connections 1 BSP Drain cock connection BSP Manual air vent connection BSP Materials Shell Mild steel Outer casing Galvanised mild steel polyester powder coated Insulation Mineral wool...

Page 6: ...G The Grant Combined volumiser low loss header is supplied wrapped in bubble wrap with a separate kit of components in a plastic bag located inside the top cover Refer to list of components given in S...

Page 7: ...System Return System Flow System Flow System Return Second Zone Figure 3 1 Heat pump connections on left hand side Heat pump 1 Flow Heat pump 2 Flow Heat pump 2 Return Heat pump 1 Return System Return...

Page 8: ...the flow regulator window Refer to Figure 3 3 If two heat pumps of the SAME output are connected to the low loss header volumiser both flow regulators should be set to the SAME flowrate as calculated...

Page 9: ...3 Installation Page 9 Flow from heat pump Flow from heat pump Alternative position Flow to system Flow to system Alternative positions Flow to system Alternative position Figure 3 4 Volumiser only con...

Page 10: ...ected to the heat pump terminal PCB Refer to Section 4 2 Electrical Connections 4 2 ELECTRICAL CONNECTIONS WARNING Ensure that all electrical supplies to the heat pump and volumiser header are isolate...

Page 11: ...on heat pump Terminal PCB to Terminal N A1 on the backup heater relay Refer to Figure 4 3 for header volumiser connection diagram 3 Tighten the cable gland to securely grip the cable 4 3 IMMERSION HEA...

Page 12: ...the immersion heater needs to be replaced it must be fitted to the volumiser header using the gasket provided on the unit Only use a correctly shaped spanner Stilsons or pipe grips should NOT be used...

Page 13: ...n 5 3 for the correct parameter settings If a second Grant Aerona heat pump is to be used refer to Section 5 5 for the correct parameter settings for the operation of a supplementary heat pump 5 3 PAR...

Page 14: ...me for a defrost should never be more than 5 minutes including the compressor protection off time of 3 minutes so the total power used during a defrost period by the immersion element would not be mor...

Page 15: ...Group Code Default Min Max Setting I 21 00 Enable outgoing water set point 0 Fixed set point 1 Climatic curve 1 0 1 0 I 21 01 Fixed outgoing water set point 45 C 23 0 60 0 55 NOTE Refer to the Aerona...

Page 16: ...GRANT ENGINEERING UK LIMITED Hopton House Hopton Industrial Estate Devizes Wiltshire SN10 2EU Tel 44 0 1380 736920 Fax 44 0 1380 736991 Email info grantuk com www grantuk com...

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