Riello 7000 ACI 60 PLUS User manual

cod. Doc-0072586 rev. 6 09/2017
7000 ACI PLUS
EN INSTALLATION, OPERATION AND MAINTENANCE MANUAL

2
RANGE
MODEL (Hot-cold version) CODE
RIELLO 7000 ACI 800 PLUS 20137619
RIELLO 7000 ACI 1000 PLUS 20137620
RIELLO 7000 ACI 1500 PLUS 20137622
RIELLO 7000 ACI 2000 PLUS 20137624
MODEL (Cold version) CODE
RIELLO 7000 ACI 800 PLUS C 20136268
RIELLO 7000 ACI 1000 PLUS C 20136269
RIELLO 7000 ACI 1500 PLUS C 20136270
RIELLO 7000 ACI 2000 PLUS C 20136271
ACCESSORIES
For a complete list of accessories and details of their compatibil-
ity, refer to the Catalogue.
ENGLISH
Dear heating engineer,
We would like to congratulate you on having recommended a
Rbuffer tank unit: a modern product that's capable of en-
suring a high degree of reliability, efciency, quality and safety.
While your technical skills and knowledge will certainly be more
than sufcient, this booklet contains all the information that
we have deemed necessary for the device's correct and easy in-
stallation.
Thank you again, and keep up the good work,
Riello S.p.A.
CONFORMITY
Rbuffer tanks conform to EN standard 10025.

3
This manual, Code Doc-0072586 - Rev. 6 (09/2017)
comprises 12 pages.
CONTENTS
The following symbols are used in this manual:
9 CAUTION! = Identies actions that require caution and
adequate preparation.
0 STOP! = Identies actions that you MUST NOT do.
Thismanual,Code
-Rev.
comprises
pages.
GENERAL
1 General Safety Information ......................4
2 Precautions..................................4
3 Description of the appliance .....................5
4 Identication ................................5
5 System layout ................................5
6 Technical specications.........................6
7 Location of sensors ............................6
8 Overall dimensions and water ttings..............7
INSTALLER
9 Unpacking the product .........................8
10 Handling....................................8
11 Place of installation ...........................9
12 Installation in older systems and systems requiring
modernisation ...............................9
END USER
13 Start-up ................................... 10
14 Temporary shutdown ......................... 10
15 Preparing for extended periods of disuse .......... 10
16 External maintenance......................... 10
TECHNICAL ASSISTANCE SERVICE
17 Recycling and disposal .........................11
18 Troubleshooting ..............................11

4
GENERAL
GENERAL
1 GENERAL SAFETY INFORMATION
9 Check that the product is complete, undamaged and as or-
dered as soon as you receive it. Report any discrepancies or
damage to the Rdealer who sold it.
9 This product must be installed by a legally qualied heat-
ing engineer. On completion of the installation, the install-
er must issue the owner with a declaration of conformity
conrming that the installation has been completed to the
highest standards in compliance with the instructions pro-
vided by Rin this instruction manual, and that it con-
forms to all applicable laws and standards.
9 This product must only be used for the purpose for which it
is designed and made, as specied by R. Rdeclines
all responsibility, contractual or other, for damage to prop-
erty or injury to persons or animals caused by improper in-
stallation, adjustment, maintenance or use.
9 The product must be serviced at least once a year. Servicing
must be arranged in advance with the RTechnical Assis-
tance Service.
9 All servicing and repairs must be performed by a qualied
heating engineer.
9 If water leaks from the storage cylinder, turn off the water
supply and contact R’s Technical Assistance Service or a
qualied heating engineer immediately.
9 If the product is not going to be used for an extended peri-
od of time, contact the manufacturer’s Technical Assistance
Service to have at least the following operations performed:
−Close the shut-off cocks for the domestic hot water circuit
−Shut down the boiler connected to the storage cylinder
as instructed in its own manual
−Switch the storage cylinder OFF at the control panel (if
tted) and at the mains power switch
−Drain the central heating circuit and domestic hot water
circuit if there is any risk of freezing.
9 This instruction manual is an integral part of the product. It
must be kept safe and must ALWAYS accompany the product,
even if it is sold to another owner or transferred to another
user or to another installation. If you lose this manual, or-
der a replacement immediately. Keep the product purchase
documents to be presented to the Rauthorised Technical
Assistance Service to request a service call under warranty.
9 If the product is destined for use in a solar collector circuit,
anti-freeze (propylene glycol, available separately) must be
mixed with water in a percentage varying from 30% to 50%
as instructed in the installation and maintenance manual
for the Rsolar collectors.
2 PRECAUTIONS
The operation of any appliance that uses electrical power de-
mands that a number of fundamental safety precautions be re-
spected. In particular:
0 Never attempt to install the system without using suitable
personal protection equipment and without following all
applicable occupational safety standards.
0 Do not touch the product when barefoot or wet if it has any
electrical accessories installed in it.
0 Never clean or service the storage cylinder without rst
turning the mains power switch OFF to disconnect all elec-
trical accessories (if tted) from the mains electricity supply.
0 Never pull, disconnect, or twist any electrical cables coming
from the appliance even if it is disconnected from the mains
electricity supply.
0 Do not expose the storage cylinder to the elements. It is not
designed for use outdoors.
0 If solar plant pressure decreases, it is forbidden to top up
with only water as there is a danger of freezing and over-
heating.
0 Do not use connections or safety devices or ttings (expan-
sion vessels, pipes, insulation) that are not specically de-
signed and tested for use in solar water heating systems.
0 Do not allow children or inrm persons to operate the sys-
tem unsupervised.
0 Do not dispose of packaging material into the environment,
or leave it within the reach of children, since it can become
a potential hazard. Dispose of packaging material in com-
pliance with applicable legislation.
General

5
GENERAL
GENERAL
3 DESCRIPTION OF THE APPLIANCE
R7000 ACI PLUS buffer tanks can be used in conjunction
with chiller systems, solar panels, heat pumps and wood burn-
ing boilers but are not designed to produce domestic hot wa-
ter. These buffer tanks can be connected in a variety of ways to
maximise exibility in system layout.
The most important design features of the product are:
−special tank design and shape for optimum performance
in terms of stratication, heat exchange and replenish-
ment time
−the provision of ttings at different heights for high and
low temperature circuits
−CFC and HCFC free PEXL + Soft polyurethane insulation and
an elegant external casing to reduce heat loss and im-
prove efciency
R7000 ACI PLUS buffer tanks are easy to integrate in systems
in which Rboilers or other products act as auxiliary heat
sources.
4 IDENTIFICATION
R7000 ACI PLUS buffer tanks are identied by:
Data plate
It indicates the technical and performance data.
RIELLO S.p.A.
Via Ing.Pilade Riello 7
RIELLO S.p.A.
Via Ing.Pilade Riello 7
37045 Legnago (VR) - ITALY
37045 Legnago (VR) - ITALY
PUFFERSPEICHER
Modell
Seriennummer
KodeBaujahr
Stromversorgung
V-Hz
Speicherinhalt
l
067670DE
Erdschluss ist Vorschrift - Obligatory ground connection - Aarding verplicht
W
Stromaufnahme
Max. Betriebsdruck Speicher
bar
Max. Betriebstemperatur Speicher
°C
Wärmeverluste
STORAGE CYLINDER
Model
Serial number
CodeYear
Storage cylinder capacity
Max. working pressure of cylinder
Max. working temperature of cylinder
Heat loss
Electrical consumption
Power supply
VOORRAADVAT
Serienummer
Bouwjaar
Accumulatiecapaciteit
Max. bedrijfsdruk accumulatie
Warmteverliezen
Max. bedrijfstemperatur accumulatie
Elektrische voeding
Opgenomen elektr. vermogen
Seriennummer
Modell Speicherinhalt l
Serial number
Storage capacity
Model
bar
Max. working pressure of cylinder
Max. Betriebsdruck Speicher
Max. bedrijfsdruk accumulatie
Accumulatiecapaciteit
kWh/24h
Serial number plate
This species the serial number and model.
9 If these plates or any other means of clearly identifying
the product are defaced, removed or lost, proper instal-
lation and servicing may be rendered difcult.
5 SYSTEM LAYOUT
1
4
2
3
3
MC
MI
MC
MI
RCRI
SC
1 Vent
2 Fitting for electrical heating element
3 Temperature sensor sockets
4 Temperature gauge socket
MI Central heating ow
MC Outlet from boiler
RI Central heating return
RC Return to boiler
SC Drain

6
GENERAL
GENERAL
6 TECHNICAL SPECIFICATIONS
DESCRIPTION 7000 ACI PLUS (Hot-cold version)
800 1000 1500 2000
Type of buffer tank Non vitried
Tank layout Vertical
Buffer tank capacity 732 855 1420 2013 l
Diameter with insulation 990 990 1200 1300 mm
Diameter of storage cylinder without insulation 790 790 1000 1100 mm
Height with insulation 1800 2050 2165 2480 mm
Height without insulation 1725 1975 2090 2405 mm
Insulation thickness 100 mm
Maximum operating pressure 6bar
Maximum operating temperature 99 °C
Net weight with insulation 115 170 185 305 kg
Diameter of sensor socket 8mm
Discharges according to EN 12897:2006
(∆T=45 °C, ambient 20°C and storage at 65°C)
131 139 168 190 W
3,14 3,34 4,03 4,03 kWh/24h
Insulation type 20 mm PEXL + 80 mm Soft PU
DESCRIPTION 7000 ACI PLUS C (Cold version)
800 1000 1500 2000
Type of buffer tank Non vitried
Tank layout Vertical
Buffer tank capacity 732 855 1420 2013 l
Diameter with insulation 850 850 1060 1160 mm
Diameter of storage cylinder without insulation 790 790 1000 1100 mm
Height with insulation 1725 1975 2090 2405 mm
Height without insulation 1725 1975 2090 2405 mm
Insulation thickness 30 mm
Maximum operating pressure 6bar
Maximum operating temperature 99 °C
Net weight with insulation 101 150 164 279 kg
Diameter of sensor socket 8mm
Discharges according to EN 12897:2006
(∆T=45 °C, ambient 20°C and storage at 65°C)
471 528 726 913 W
11,3 12,67 17,42 21,91 kWh/24h
Insulation type Soft PU shells
(*) In accordance with DIN 4708 with a ΔT of 20°C (80°/60°C) at the coil.
7 LOCATION OF SENSORS
R7000 ACI PLUS buffer tanks incorporate sockets for temperature control sensors.
9 The actual positioning of sensors depends on what components, water connections and control device are installed.
9 The installer is responsible for making all necessary connections to the boiler and solar collectors. Installers must use their
expertise to ensure proper installation and functioning in compliance with all applicable legislation.
9 In case of a probe, any electric junction between probe cable and extensions for the connection to the electric panel must be
soldered and protected with a sheath or a suitable electric insulation.

7
GENERAL
GENERAL
8 OVERALL DIMENSIONS AND WATER FITTINGS
2
1
4
3
3
MC
MI
MC
MI
RC
RI
SC
A
B
C
D
E
DESCRIPTION 7000 ACI PLUS - PLUS C
800 1000 1500 2000
1 Temperature gauge socket 1/2" F Ø
2 Vent valve tting 1"1/4 F Ø
3 Sensor sockets 1/2" F Ø
4 Fitting for electrical heating element (not supplied) 1 1/2” F 2" F (*) Ø
MI CH ow 3" F 4" F Ø
RI CH return 3" F 4" F Ø
SC Drain 1" F Ø
RC Return to boiler 3" F 4" F Ø
MC Outlet from boiler 3" F 4" F Ø
A220 220 250 250 mm
B355 355 415 415 mm
C905 1030 1080 1230 mm
D1455 1705 1745 2045 mm
E990 1130 1180 1330 mm
(*) A 2" M – 1 ½" F adapter with galvanised plug is tted as standard
9 We recommend that you install isolating valves in the outlet and return lines.
9 Check the efciency of the seals when lling/relling the buffer tank.

8
INSTALLER
INSTALLER
9 UNPACKING THE PRODUCT
R7000 ACI PLUS buffer tanks are delivered in a single pack-
age, protected by a plastic bag and secured to a wooden pallet.
The following items are delivered in a plastic bag inside the
packaging:
−Instruction manual
−Bar code labels
−Hydraulic test certicate
A
B
H
7000 ACI PLUS A B H Gross weight
(kg)
800 1000 1000 1950 134
1000 1000 1000 2200 189
1500 1200 1200 2315 213
2000 1300 1300 2630 335
7000 ACI PLUS C A B H Gross weight
(kg)
800 900 900 1875 112
1000 900 900 2125 168
1500 1200 1200 2240 190
2000 1200 1200 2555 305
10 HANDLING
Once you have removed the outer packaging, proceed as follows
to unpack and handle the buffer tank.
9 Wear suitable personal protective equipment and use suit-
able safety devices.
0 Do not dispose of packaging material into the environment,
or leave it within the reach of children, since it can become
a potential hazard. Dispose of packaging material in com-
pliance with applicable legislation.
Installer

9
INSTALLER
INSTALLER
11 PLACE OF INSTALLATION
R7000 ACI PLUS buffer tanks can be installed in any room
where there is no specic requirement for an electrical protec-
tion rating higher than IP X0D.
≥ 0,4 m
≥ 0,4 m
≥ 0,6 m
≥ 0,3 m
≥ 0,4 m
9 Respect the minimum specied installation distances to
ensure correct installation and access for maintenance.
12 INSTALLATION IN OLDER SYSTEMS AND SYSTEMS
REQUIRING MODERNISATION
When installing R7000 ACI PLUS buffer tanks in old systems or
systems requiring modernisation, always perform the following
checks.
−Make sure that the system is tted with safety and con-
trol devices in accordance with applicable legislation and
standards
−Make sure that the central heating circuit has been
ushed out to remove all sludge and lime scale, and has
been vented and seal tested
−Make sure that a suitable water treatment system is in-
stalled if the quality of the supply/recirculation water so
demands (refer to the reference values listed in the table
alongside).
REFERENCE VALUES
pH 6-8
Electrical conductivity less than 200 μS/cm (25°C)
Chlorine ions less than 50 ppm
Sulphuric acid ions less than 50 ppm
Total iron less than 0.3 ppm
Alkalinity M less than 50 ppm
Total hardness less than 35°F
Sulphur ions none
Ammonia ions none
Silicon ions less than 30 ppm

10
END USER
END USER
END USER INSTRUCTIONS
Refer to the GENERAL SAFETY INFORMATION and PRECAUTIONS section for safety-related information.
13 START-UP
The buffer tank must be put into service for the rst time by
personnel from the manufacturer’s Technical Assistance Service.
Under certain circumstances, such as after long periods of dis-
use, the user may need to re-start it without involving the Tech-
nical Assistance Service. Before doing so, perform the following
checks and operations.
−Check that the supply cocks in the domestic water circuit
are all open
−Switch the electricity supply ON at the mains power
switch and at control panel switch (if tted).
14 TEMPORARY SHUTDOWN
To reduce impact on the environment and save energy, before
leaving for the weekend or a short break, etc., provided outdoor
temperatures will remain above ZERO, simply adjust the buffer
tank’s temperature control device to its minimum setting.
9 If outdoor temperature may drop below ZERO (risk of freez-
ing) perform the operations described in the “Preparing for
extended periods of disuse” section.
15 PREPARING FOR EXTENDED PERIODS OF DISUSE
If the buffer tank is not going to be used for an extended period
of time, ask the manufacturer’s Technical Assistance Service to
make the system safe.
16 EXTERNAL MAINTENANCE
Clean the cover, painted and plastic parts with a cloth damped
in soap and water. To remove stubborn marks, use a cloth
damped in a 50% mix of water and denatured alcohol or a suit-
able cleaning product.
9 Do not use fuels, sponges impregnated with abrasive solu-
tions or powder detergents.
Enduser

11
TECHNICAL ASSISTANCE SERVICE
TECHNICAL ASSISTANCE SERVICE
17 RECYCLING AND DISPOSAL
At the end of its useful working life, do not abandon the buffer tank in the environment, but dispose of it through the proper chan-
nels in accordance with applicable legislation.
18 TROUBLESHOOTING
FAULT CAUSE SOLUTION
The buffer tank functions incorrectly or
irregularly
Flow rate too high
−Fit a pressure limiter
−Fit a ow reducer
There are blockages or deposits in the
buffer tank −Check and clean as necessary
Filling pump not functioning −Check the pump
The water temperature from the boiler is
too low −Check the temperature setting
There is air in the primary circuit −Bleed the circuit
The safety valve is not functioning
correctly The safety valve is blocked or faulty −Clean or change the valve
Water ows out of the safety valve
Valve faulty −Replace the valve
Circuit pressure too high −Install a suitable pressure reducing
device
TechnicalAssistanceService

The manufacturer strives to continuously improve all products. Appearance, dimensions, technical specications, standard equipment
and accessories are therefore liable to modication without notice.