Grant Aerona3 HPID13R32 User manual

UK | DOC 0183 | Rev 1.0 | November 2022
Grant
External Volumiser
Installation Instructions

This manual is accurate at the date of printing but will be superseded and should be disregarded if specications and/or appearances are changed in the interests of continued product improve-
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 o󰀩cial 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 External Volumiser.
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
HPIDVOL30EXT Grant 30 litre External Volumiser
SERVICING
The External Volumiser should be inspected at least every twelve
months, when the heat source and/or heating system is serviced.
GRANT ENGINEERING (UK) LIMITED
Frankland Road, Blagrove Industrial Estate, Swindon, SN5 8YG
Tel: [phone] Fax: [phone]
Email: [email protected] www.grantuk.com

1 INTRODUCTION 4
1.1 General 4
1.2 Product contents 4
1.3 Pipe ttings for HPID6R32 only 4
2 TECHNICAL DATA 5
2.1 Technical specication 5
2.2 Dimensions 5
3 INSTALLATION 6
3.1 General 6
3.2 Regulations and Standards 6
3.3 Location 6
3.4 Clearances 6
3.5 Unpacking 6
3.6 Installation procedure 6
3.7 System connections 7
4 ELECTRICAL 11
4.1 General 11
4.2 Electrical connections 11
4.3 Immersion heater 12
5 OPERATION 14
5.1 General 14
5.2 Aerona³ heat pump parameter
settings 14
6 DECLARATION OF CONFORMITY 15
7 GUARANTEE 16
NOTES 18
! NOTE !
These Installation Instructions must be read in conjunction
with the Aerona³ Installation and Servicing Instructions
supplied with the heat pump.
Contents Page 3
CONTENTS

Section 1: IntroductionPage 4
1.1 GENERAL
A ‘volumiser’ is simply a vessel used to increase the volume of the
heating system connected to the heat pump. It has one inlet and
one outlet for connection to the heat pump and heating system.
The Grant External volumiser can be used in the following
situations:
a) Where there is insu󰀩cient water volume in the heating
system connected to the heat pump.
b) Where there is no available space inside the property to
accommodate a volumiser/low loss header, such as the
Grant combined volumiser/low loss header.
c) When a plate heat exchanger is used to provide hydraulic
separation between the heat pump and the heat emitter
circuits.
The Grant External 30 litre volumiser is an insulated rectangular
tank tted with a single 3kW electric immersion heater and is
designed for use with the Grant Aerona³ air source heat pumps.
This is housed within a weatherproof external casing with a
removable cover at one end to access the electrical connections
and immersion heater.
It is designed to be located behind the Aerona³ heat pumps, on
the same anti-vibration mounts (Grant product code: HPIDFOOT/
KIT2) as the heat pump, using the mounting brackets provided
with the volumiser. See Figure 1-1.
1 INTRODUCTION
Figure 1-1: Grant External Volumiser behind Aerona³ heat pumps
HPID13R32 & HPID17R32 HPID10R32 HPID6R32
! NOTE !
This volumiser is designed to be installed in the ow from
the heat pump.
The volumiser has two pipe connections located on the upper
surface of the unit. Refer to Figure 2-1. These are 28mm
compression connections. Refer to Section 3.6 for further details
on the connections to the external volumiser.
The exible hoses supplied with the Grant Aerona³ will be used to
connect the External Volumiser to the heat pump.
The 3kW electric immersion element is supplied, factory tted
and located inside a removable panel at the right-hand side of the
volumiser (viewed from the front).
It is intended to provide a backup heat source controlled by the
Grant Aerona air source heat pump to which it is connected. Refer
to Section 4 – Electrical.
The shell of the volumiser is a mild steel welded construction,
insulated with mineral wool. This is enclosed within an outer
galvanised steel casing with a powder coated paint nish to match
the casing of the heat pump.
The volumiser is tted with a ½” drain cock, located to the left of
the immersion heater, to allow the volumiser to be drained down if
required.
! WARNING !
The immersion heater must NOT be used unless it is fully
immersed in water. Always ensure that the electrical supply
to the volumiser/immersion heater is isolated BEFORE
draining down the volumiser.
Always ensure that volumiser is fully relled with water
BEFORE switching the electrical supply back on
1.2 PRODUCT CONTENTS
The Grant External Volumiser is supplied as a pack, in a box,
containing the following items:
• 1 x External Volumiser c/w immersion heater
• 2 x Mounting Brackets
• 1 x Cable gland M20mm
• 1 x Cable gland M16mm
• 1 x Installation instructions
1.3 PIPE FITTINGS FOR HPID6R32 ONLY
As the INLET on the top of the external volumiser is higher than
the ow connection on the back of the HPID6R32 heat pump, an
elbow with an integral manual vent must be tted to the volumiser
inlet to allow the volumiser to be vented of any air. Refer to Figure
3-8.
The necessary 22mm compression elbow with integral manual
air vent is supplied with the heat pump for this connection
arrangement.
Two 28mm x 22mm compression reducing sets are also supplied
with the heat pump. These to allow 22mm pipe to be connected to
the 28mm inlet and outlet connections on the external volumiser.
Refer to Figure 3-9.

Section 2: Technical data Page 5
Table 2-1: External Volumiser technical data
Grant External Volumiser
Nominal capacity (litres) 30
Actual capacity (litres) 28
Weight - empty (kg) 31
Weight - full (kg) 59
Inlet/outlet connections 28mm compression
Drain cock connection ½” BSP
Materials
Shell Mild steel
Outer casing Galvanised mild steel, polyester powder coated
Insulation Mineral wool
Immersion Heater
Make Cotherm TSR
Output (kW) 3
Electrical supply 230V 50Hz 1ph
2.1 TECHNICAL SPECIFICATION
2 TECHNICAL DATA
2.2 DIMENSIONS
Figure 2-1: Grant External Volumiser dimensions
DWG NO: REV:
912 30LTR EXTERNAL VOLUMISER C_W IMMERSION.asm
26/11/21 22645 0
DATE:
JOB TITLE:
30LTR EXTERNAL VOLUMISER
C_W IMMERSION
DRAWING TITLE:REV DESCRIPTION: REV DATE:
134 454
816
CABLE GLAND
KNOCK-OUT
(EACH SIDE)
67
152
240
INLET FROM HEAT-PUMP
28MM COMPRESSION
OUTLET TO SYSTEM
28MM COMPRESSION
CABLE GLAND
KNOCK-OUT
368
400

Section 3: InstallationPage 6
3 INSTALLATION
3.1 GENERAL
This section gives details of the installation process for the Grant
External Volumiser with backup immersion heater.
These installation instructions must be read in conjunction with
the Grant Aerona³ air source heat pump installation instructions
(provided with the heat pump).
Before starting any installation work on the Grant Aerona³ air
source heat pump and external volumiser, please read the
Health and Safety information given in Section 14 of the Aerona³
Installation Instructions.
3.2 REGULATIONS AND STANDARDS
The installation of the Grant Aerona³ air source heat pump and
the External Volumiser must be in accordance with the following
recommendations, as applicable:
• Building Regulations for England and Wales, and Building
Standards for Scotland
• Local Bylaws (check with the Local Authority for the area)
• Water Supply (Water Fittings) Regulations 1999
• MCS Installer Standards (if applying for the Renewable Heat
Incentive)
• MIS3005 Requirements for contractors undertaking the
supply, design, installation, set to work, commissioning
and handover of microgeneration heat pump systems.
• MCS020 MCS Planning Standard
The installation should also be in accordance with the latest
edition of the following standards and Codes of Practice:
• BS7671 and amendments
• BS EN 12831
3.3 LOCATION
Refer to the Grant Aerona³ air source heat pump installation
instructions (provided with the heat pump) for the details and
requirements on the location of the heat pump and the clearances
required.
3.4 CLEARANCES
With the external volumiser mounting brackets tted into heat
pump AV mounts (as described in Section 3.6) there will be a gap
of approximately 100mm between the back of the heat pump and
the front face of the external volumiser.
If the rear face of the volumiser is 50mm from the wall, this will
leave a distance of approximately 400mm between the wall and
the back of the heat pump.
3.5 UNPACKING
The Grant External Volumiser is supplied in a cardboard carton.
Please note that this is a two-man lift.
To remove it from this carton for installation, use the following
procedure:
• Lay a clean dust sheet, or similar on the ground to prevent
scratching the casing.
• Place the carton on the dust sheet taped joint uppermost.
• Cut the along taped joint and open the two aps of the
cardboard carton.
• Carefully tilt the carton over so the volumiser is resting on the
dust sheet.
• Lift the carton up and o󰀨 the volumiser
! NOTE !
Take care if cutting the tape with a knife not to damage the
volumiser casing immediately beneath.
3.6 INSTALLATION PROCEDURE
! NOTE !
These instructions apply when using the 600mm long
Grant anti-vibration mounts (AV mounts) only - Grant
product code: HPIDFOOT/KIT2.
1. Fit the volumiser mounting brackets to the AV mounts, as
follows:
• Identify the correct end of the mounting bracket to t into
the AV mount – see Figure 3-1.
• Insert this end of the mounting bracket into the metal
channel of the AV mount as far as it will go – i.e., until it
reaches the stop on the bracket. See Figure 3-2.
• Repeat with the second bracket and AV mount.
Figure 3-1: Mounting bracket
Step in bracket top edge
Figure 3-2: Fitting mounting bracket
2. Position the AV mounts in the required location, allowing for
the fact that the heat pump will be positioned at the front end
of the mounts.
If the backup immersion heater tted to the Grant External
Volumiser is to be used; remove the two semi-pierced
knockouts on the front face of the volumiser casing and t the
two cable glands supplied with the unit. Refer to Figure 3-3.
Semi-pierced knockouts
Figure 3-3: Semi-pierced knockouts in front face of volumiser

Section 3: Installation Page 7
! NOTE !
If the backup immersion heater is to be used ensure that
the two semi-pierced knockouts are removed BEFORE the
external volumiser is tted and piped up to the heat pump.
3. Fit the external volumiser onto the AV mounts, ensuring that
the ow and return connections are facing upwards and the
removable cover is at the right-hand end of the volumiser
when facing the heat pump from the front.
Refer to Figure 3-4.
Figure 3-4: Locating volumiser on mounting brackets
Figure 3-5: Volumiser mounting brackets
4. Ensure that the base of the External Volumiser is correctly
located between the two upward facing anges on both of the
mounting brackets. Refer to Figure 3-5.
5. Position the Aerona³ heat pump on the AV mounts, with the
front feet at the end of the metal channel of the mounts.
Tighten the four xing screws to secure the heat pump feet to
the AV mounts.
The gap between the rear of the heat pump and the front
of the External Volumiser should be approximately 100mm.
Refer to Figure 3-6.
If not, then slacken the four screws securing the heat pump
to the AV mounts and adjust its position to achieve approx.
100mm. Then ensure that the four screws are re-tightened to
secure the heat pump to the AV mounts.
Figure 3-6: Distance between heat pump and volumiser
(HPID13R32 shown)
3.7 SYSTEM CONNECTIONS
The Grant External Volumiser is designed to be installed in the
ow from the heat pump. It must not be installed in the return from
the system. Refer to Figure 3-7.
Figure 3-7: Typical diagram showing position and connection of
external volumiser
Table 3-1: Key to Figure 3-7
Item Description
1 Aerona³ ASHP (HPID10R32 shown)
2 Flexible hose
3 Isolation valve
4Grant external volumiser
5 Anti-vibration mounts
Upward facing
flanges
3
23
1
4
Item Description
1 Aerona³ ASHP (HPID10R32 shown)
2 Flexible hose
3 Isolation valve
4 Grant External Volumiser
5 Anti-Vibration Mounts
2
5

Page 8 Section 3: Installation
The Grant External Volumiser is supplied with two connections –
one inlet and one outlet. Refer to Figure 2-1.
Each connection is identied on the volumiser casing with an
arrow to indicate which is the inlet and outlet. These connections
are 28mm compression.
GENERAL
In all cases the FLOW connection on the back of the heat pump
is connected to the INLET connection on the top of the external
volumiser, via one of the two exible hoses supplied with the heat
pump.
The OUTLET connection on the top of the external volumiser is
connected to the ow pipe of the heating system.
One of the two isolating valves, supplied with the heat pump,
should be tted externally, in the system ow pipe. Refer to Figure
3-7.
The heating system return pipe is connected to the RETURN
connection on the back of the heat pump via the second of the
two exible hoses supplied with the heat pump.
The second of the two isolating valves, supplied with the heat
pump, should be tted externally in the system return pipe. Refer
to Figure 3-7.
The actual means of connection between the heat pump, the
external volumiser and the system is slightly di󰀨erent, depending
on which size of heat pump the volumiser is connected to.
Refer to the following details for the model of heat pump being
tted:
3.7.1 AERONA³ HPID6R32 HEAT PUMP
As the INLET on the top of the external volumiser is higher than
the ow connection on the back of the HPID6R32 heat pump, an
elbow with an integral manual vent must be tted to the volumiser
inlet to allow the volumiser to be vented of any air. Refer to
Figure 3-8 for the connection arrangement.
For details of the pipe and ttings required to make the connection
between the heat pump and external volumiser refer to Figure
3-9.
Return from system
Flow to system
Figure 3-8: External volumiser connection to HPID6R32 heat
pump
1
2
3
4
5
6
7
8
9
10
73
Figure 3-9: External volumiser connection to HPID6R32 heat
pump (exploded image)
Table 3-2: Key to Figure 3-9
Item Description Source
1 External volumiser N/A
2Volumiser inlet connection -
28mm compression
Supplied on
Volumiser
3Compression reducing set -
28mm x 22mm
Supplied with heat
pump
4Copper pipe 22mm - length to suit Supplied by installer
5Elbow c/w manual air vent -
22mm compression
Supplied with heat
pump
6 Copper pipe 22mm - length to suit Supplied by installer
7Flexible hose -
¾” BSP x 22mm c/w washer
Supplied with heat
pump
8 Heat pump ow connection - ¾” BSP N/A
9Volumiser outlet connection -
28mm compression
Supplied on
Volumiser
10 Heat pump return connection -
¾” BSP N/A

Section 3: Installation Page 9
3.7.2 AERONA³ HPID10R32 HEAT PUMP
Refer to Figure 3-10 for the connection arrangement between the
external volumiser and an HPID10R32 heat pump.
For details of the pipe and ttings required to make the connection
between the heat pump and external volumiser refer to Figure
3-11.
Return from system
Flow to system
Figure 3-10: External volumiser connection to HPID10R32 heat
pump
1
2
3
4
5
6
7
8
6
9
Figure 3-11: External volumiser connection to HPID10R32 heat
pump (exploded image)
Table 3-3: Key to Figure 3-11
Item Description Source
1 External volumiser N/A
2Volumiser inlet connection -
28mm compression
Supplied on
Volumiser
3 Copper pipe 28mm - length to suit Supplied by installer
4Elbow - 28mm compression Supplied by installer
5 Copper pipe 28mm - length to suit Supplied by installer
6Flexible hose -
1” BSP x 28mm c/w washer
Supplied with heat
pump
7 Heat pump ow connection - 1” BSP N/A
8Volumiser outlet connection -
28mm compression
Supplied on
Volumiser
9Heat pump return connection -
1” BSP N/A

Page 10 Section 3: Installation
1
2
3
4
5
6
7
8
9
10
7
6
Table 3-4: Key to Figure 3-13
Item Description Source
1 External volumiser N/A
2Volumiser inlet connection -
28mm compression
Supplied on
Volumiser
3 Copper pipe 28mm - length to suit Supplied by installer
4Elbow - 28mm compression Supplied by installer
5 Copper pipe 28mm - length to suit Supplied by installer
6Flexible hose -
1” BSP x 28mm c/w washer
Supplied with heat
pump
71” nipple and 1¼” BSP x 1” BSP
reducing socket
Supplied with heat
pump
8 Heat pump ow connection - 1¼” BSP N/A
9Volumiser outlet connection -
28mm compression
Supplied on
Volumiser
10 Heat pump return connection - 1¼” BSP N/A
Figure 3-13: External volumiser connection to HPID13R32 and
HPID17R32 heat pumps (exploded image)
3.7.3 AERONA³ HPID13R32 AND HPID17R32
HEAT PUMPS
Refer to Figure 3-12 for the connection arrangement between the
external volumiser and an HPID13R32 or HPID17R32 heat pump.
For details of the pipe and ttings required to make the connection
between the heat pump and external volumiser refer to Figure
3-13.
Return from system
Flow to system
Figure 3-12: External volumiser connection to HPID13R32 and
HPID17R32 heat pumps