Riello 7200/2-1500 HV PLUS User manual

cod. Doc-0071219 rev. 4 06/2019
Solar storage cylinders 7200/2 - 1500-2000 HV PLUS
EN INSTALLATION INSTRUCTIONS

MODEL CODE
RIELLO 7200/2 - 1500 HV PLUS 20136237
RIELLO 7200/2 - 2000 HV PLUS 20136239
1 Safety precautions 3
2 General safety information 3
3 Product description 4
4 Technical data 4
5 Water circuit 6
6 Dimensions and connections 7
7 Receiving the product 8
8 Handling 8
9 Installations on appliances that are old or need to be updated 9
10 Commissioning 9
11 Deactivation for long period 10
12 Maintenance 10
13 Cleaning the storage cylinder and dismantling the internal components 11
14 Recycling/disposal 11
Index
Dear Installer,
thank you for choosing a Riello 7200/2 HV PLUS solar stor-
age cylinder, a modern high quality product, providing
you with the utmost wellbeing and with a high level of
reliability and safety.
This instruction booklet contains important information
and suggestions that should be observed for easy instal-
lation and better use of the solar storage cylinder Riello
7200/2 HV PLUS.
Please accept our renewed thanks for your purchase.
Riello
The following symbols are used in this manual:
CAUTION! = Indicates actions that require caution and adequate preparation.
STOP! = Identies actions that you MUST NOT do.

3
Riello 7200/2 HV PLUS
1 Safety precautions 2 General safety information
Check that the product is complete, undamaged and
as ordered as soon as you receive it. Report any dis-
crepancies or damage to the
R dealer who sold it.
This product must be installed by a legally qualied
heating engineer. On completion of the installation,
the installer must issue the owner with a declaration
of conformity conrming that the installation has
been completed to the highest standards in com-
pliance with the instructions provided by
R in this
instruction manual, and that it conforms to all ap-
plicable laws and standards.
This product must only be used for the purpose for
which it is designed and made, as specied by
R .
R declines all responsibility, contractual or other,
for damage to property or injury to persons or ani-
mals caused by improper installation, adjustment,
maintenance or use.
The product must be serviced at least once a year.
Servicing must be arranged in advance with the
R
Technical Assistance Centre.
All servicing and repairs must be performed by a
qualied heating engineer.
If water leaks from the storage cylinder, turn off the
water supply and contact
R ’s Technical Assistance
Centre or a qualied heating engineer immediately.
If the product is not going to be used for an extend-
ed period of time, contact the manufacturer’s Tech-
nical Assistance Centre 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 cyl-
inder 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.
This instruction manual is an integral part of the
product. It must be kept safe and must ALWAYS ac-
company the product, even if it is sold to another
owner or transferred to another user or to anoth-
er installation. If you lose this manual, order a re-
placement immediately. Keep the product purchase
documents to be presented to the
R authorised
Technical Assistance Centre to request a service call
under warranty.
Size the solar expansion tank so as to ensure com-
plete absorption of the expansion of the uid con-
tained within the system, with reference to the
prevailing regulations on the matter. In particular,
consider uid characteristics, considerable uctua-
tion of service temperature and vapour that might
be generated during solar collector stagnation stage.
Proper size of expansion tank ensures setting off of
all volume changes of the heat transfer uid, avoid-
ing excessive pressure increase. Limited pressure
changes avoid reaching safety valve opening pres-
sure and the consequent uid drainage.
Please remember that the use of products using electric
power and water involves respect for a few basic safety
rules such as:
Never attempt to install the system without using
suitable personal protection equipment and without
following all applicable occupational safety stand-
ards.
Do not touch the product when barefoot or wet if it
has any electrical accessories installed in it.
Never clean or service the storage cylinder without
rst turning the mains power switch OFF to dis-
connect all electrical accessories (if tted) from the
mains electricity supply.
Never pull, disconnect, or twist any electrical cables
coming from the appliance even if it is disconnected
from the mains electricity supply.
Do not expose the storage cylinder to the elements.
It is not designed for use outdoors.
If solar plant pressure decreases, it is forbidden to
top up with only water as there is a danger of freez-
ing and overheating.
Do not use connections or safety devices or ttings
(expansion vessels, pipes, insulation) that are not
specically designed and tested for use in solar wa-
ter heating systems.
Do not allow children or inrm persons to operate
the system unsupervised.
Do not dispose of packaging material into the en-
vironment, or leave it within the reach of children,
since it can become a potential hazard. Dispose of
packaging material in compliance with applicable
legislation.

4
Riello 7200/2 HV PLUS
DESCRIPTION 7200/2
1500 HV PLUS
7200/2
2000 HV PLUS
Type of storage cylinder Vitried
Storage cylinder layout Vertical
Heat exchanger layout Vertical
Storage cylinder capacity 1390 1950 l
Useful non-solar volume (Vbu) 525 800 l
Diameter with insulation 1200 1300 mm
Diameter of storage cylinder without insulation 1000 1100 mm
Height without insulation 2120 2370 mm
Height with insulation 2185 2470 mm
Insulation thickness 100 100 mm
Total net weight 325 540 kg
First magnesium anode (Ø x length) 32x700 mm
Second magnesium anode (Ø x length) 32x400 mm
Flange diameter (external/internal) 290/220 mm
Diameter/length of sensor socket 8/200 mm
Sleeve for electric heating element (**) 1" 1/2 mm
Coil water capacity 19,4 28,1 L
Coil heat exchange surface area 3,4 4,6 m2
Power absorbed by coil (*) 88 120 kW
Domestic hot water production (*) 2200 2900 l/h
Flow required at coil (*) 3,8 5,2 m3/h
Top coil water capacity 10,4 16,9 l
Top coil heat exchange surface area 1,8 2,8 m2
Power absorbed by top coil (*) 47 73 kW
Hot water production – top coil (*) 1200 1800 l/h
Flow required at top coil (*) 23,1 m3/h
Maximum operating pressure 8 bar
Maximum operating temperature 99 °C
Discharges according to EN 12897:2006
(∆T=45 °C, ambient 20°C and storage at 65°C)
162 186 W
3,89 4,46 kWh/24h
Insulation type Soft PU
Maximum operating pressure of coil 10 bar
Maximum working temperature of coil 110 °C
NL performance factor 55 84
4 Technical data
3 Product description
The solar storage cylinders can be integrated into solar
systems for the production of domestic hot water.
The main technical elements of the design of the solar
storage cylinder are:
- the careful study of the geometries of the tank and the
coils that allow you to obtain the best performance in
terms of stratication, heat exchange and reactivation
times
- the regulation of the connections to various heights for
employing various types of heat generators, without
inuencing the stratication
- the polyurethane insulation without any CFC and the
elegant outer covering to limit dispersion and to im-
prove efciency
- the use of the ange to facilitate cleaning and mainte-
nance
- the use of the magnesium anode with an "anti-corro-
sion" function
The storage cylinders can be equipped with a specic so-
lar regulator and they can easily be inserted into solar
system where the boilers or thermal systems act as auxil-
iary producers of heat.
(*) In accordance with DIN 4708 with a ΔT of 20°C (80°/60°C) at the coil.
(**) Electrical heating element (not supplied)

5
Riello 7200/2 HV PLUS
PERDITA DI CARICO (mbar)
PORTATA (l/h)
500
550
600
450
400
350
300
250
200
150
100
50
0
0 500 1000 1500 20002500 3000 3500 4000 4500 5000 5500 6000
Mod. 1500
Mod. 2000
Pressure drop TOP COIL
Pressure drop BOTTOM COIL
PRESSURE DROP (mbar)
FLOW RATE (l/h)
PERDITA DI CARICO (mbar)
PORTATA (l/h)
600
650
700
550
500
450
400
350
300
250
200
150
100
50
0
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000
800
850
900
850
750
Mod. 1500
Mod. 2000
950
PRESSURE DROP (mbar)
FLOW RATE (l/h)

6
Riello 7200/2 HV PLUS
EAF
UAC
MC
RC
RL
M
R
SB
BOILER
SOLAR
5 Water circuit
UAC - DHW outlet
MC - Flow
RC - Return
M - Flow
R - Return
RL - DHW ricirculation
EAF - Domestic cold water inlet
SB - Cylinder drain
1500 HV PLUS - 2000 HV PLUS
The solar storage cylinder Riello 7200/2 HV PLUS is not equipped with load circulators which should
be appropriately sized and installed on the system. For the recommended ow rate of the solar
heating circuit, see the instructions for assembling the solar collector and the Riello operation and
maintenance manual of the solar system.

7
Riello 7200/2 HV PLUS
EAF
R
UAC
RC
RL
M
MC
SB
RE
G
H
I
M
N
D
E
C
B
A
AD1
AD2
TR
Psc1
Psr
F
L
O
Psc2
P
DESCRIPTION MODELLO 7200/2
1500 HV PLUS 2000 HV PLUS
UAC - Domestic hot water outlet 1”1/2 F Ø
MC - Outlet from boiler 1”1/4 F Ø
RC - Return to boiler 1”1/4 F Ø
M - Outlet from solar collector 1”1/4 F Ø
R - Return to solar collector 1”1/4 F Ø
RL - DHW recirculation 1” F Ø
EAF (SB) - Domestic cold water inlet (storage cylinder drain) 1”1/2 F Ø
Psc1 - Diameter/length of boiler sensor socket 8/200 - mm
Psc2 - Diameter/length of boiler sensor socket - 8/200 mm
Psr - Diameter/length of solar controller sensor socket 8/200 mm
RE - Sleeve for electric heating element (not supplied) 1”1/2 F Ø
AD1 - Diameter/length of rst magnesium anode 32/700 Ø/mm
AD2 - Diameter/length of second magnesium anode 32/400 Ø/mm
TR - Temperature gauge 1/2" F Ø
A1230 1340 mm
B - 1487 mm
C1775 2000 mm
D280 250 mm
E415 400 mm
F525 662 mm
G1125 1205 mm
H1225 1315 mm
I1325 1425 mm
L 1420 - mm
M1730 1870 mm
N 1890 1990 mm
O 2120 2045 mm
P 1200 1300 mm
6 Dimensions and connections

8
Riello 7200/2 HV PLUS
1
7000/2 1500 HV PLUS
7000/2 2000 HV PLUS
1
1
1
2
3
7 Receiving the product
The solar storage cylinders Riello 7200/2 1500 HV PLUS are
supplied in a single package, protected by a nylon bag
and put on wood pallets.
7000/2 1500 HV PLUS 7000/2 2000 HV PLUS
Model Riello 7200/2 2000 HV PLUS are supplied in two sep-
arate packages:
- the rst package is composed of the painted tank, pro-
tected by a nylon bag and put on wooden pallets.
- the second package, also protected by a nylon bag, is
composed of the polyurethane insulation with an el-
egant outer covering, the outer trim rings of the pipe
coupling, the top cover, the ange covers, the identi-
cation labels and the documentation.
The following material is supplied in a plastic envelope
inside the package:
- Instruction booklet
- Hydraulic test certicate
Two magnesium anodes are also available, supplied ei-
ther already tted or in a cardboard box on the pallet
The instruction booklet is an integral part of the
storage cylinder and it is recommended that it be
read and kept safe.
INSTALLING THE MAGNESIUM ANODES
Proceed as follows to install the magnesium anodes:
- Remove the protective plugs
- Fit the two magnesium anodes in the ttings (1) and (2)
- Screw in the magnesium anodes using a suitable span-
ner.
The two magnesium anodes are supplied in a cardboard
box on the pallet
NOTE:
Tighten to a torque of 25 Nm.
8 Handling
The handling of the storage cylinder is carried out with
equipment that is suitable for the weight of the appli-
ance.
To remove the storage cylinder from the pallet, cut the
straps (1).
For models 7000/2 1500 HV PLUS these can be found under
the insulation near the hinges.
To lift the 7000/2 1500 HV PLUS storage cylinders, there is a
plug (2) with a hole where a lifting hoop (Ø 10 mm) suita-
ble for the weight of the tank can be inserted.
To lift the 7000/2 2000 HV PLUS storage cylinders, after re-
moving the insulation, bind the high part of the boiler
with a cord that can bear the weight and carefully lift it.
It is possible to dismantle the insulation covering to
make it easier to get through the door of the boiler
room.
Use suitable accident-prevention protections.
It is forbidden to dispose of the packaging material
and keep within children's reach, as it may be a po-
tential source of danger.
1
2
2

9
Riello 7200/2 HV PLUS
Before the start-up and before testing the storage cylinder, it is absolutely necessary to
check that:
- The domestic hot water circuit supply taps are open
- Any water connections which connect to the boiler and to the water unit of the solar system have been carried out
correctly
- The procedure for washing and lling up the solar heating circuit with the water-glycol has been carried out correctly,
and the equipment has been de-aerated at the same time.
The transfer of heat into the solar heating circuit takes
place when the temperature of the solar collector is high-
er than that of the storage cylinder. Therefore in managing
the solar equipment the exact temperature is not impor-
tant, but rather the temperature difference.
- Set the temperature difference between the collector
and the storage cylinder (see the instruction manual of
the regulator).
- Commission the boiler for the auxiliary heating of the
storage cylinder.
At the start-up make sure that:
- The ow rate of the solar heating circuit is 30 l/h per m2
of collector surface
- The solar heating circuit is completely vented
- The cold pressure of the equipment is about 3 bar
- The safety valves intervenes at 6 bar
- The piping of the hydraulic supply are insulated in full
respect of current regulations.
If all conditions have been met, restart the boiler and
storage cylinder and check the regulated temperature and
the amount of DHW that can be taken.
prog
A1
prog
1
2
3
4
5
06
10 First commissioning
When the solar storage cylinders Riello 7200/2 HV PLUS are
installed on appliances that are old or that need to be
updated, check that:
- The installation comes with the safety and control com-
ponents in compliance with the specic regulations
- The appliance has been washed, cleaned of mud and
grime, de-aerated and the water seals have been
checked
- There is a treatment system for when the supply/make-
up water is particular (the values in the table can be
used as reference values).
REFERENCE VALUES
pH 6-8
Electric 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
M alkalinity less than 50 ppm
Total hardness less than 35°F
Sulphur ions none
Ammonia ions none
Silicon ions less than 30 ppm
9 Installation on appliances that are old or that need to be updated

10
Riello 7200/2 HV PLUS
11 Deactivation for long periods
12 Maintenance
Not using the solar storage cylinder for a long period of
time requires that the following operations be carried
out:
- Empty the solar heating circuit
- Close the intercept devices of the sanitary system
- Switch off the boiler in the manner described in the
appliance's instruction booklet
- Position the system's master switch to off.
Drain the heating and domestic hot water systems if
there is any risk of freezing.
The Technical Assistance Centre is available if the proce-
dure reported above is difcult to do.
Periodic maintenance, which is essential for safety purposes, the efciency and the life of the solar storage cylinder,
provides reduced consumption and keeps the product reliable over time. Remember that the maintenance of the
storage cylinder, can be carried out by the Technical Assistance Centre or else by qualied professional personnel and
should take place at least once a year.
Before doing any maintenance work:
- Disconnect the storage cylinder's hydraulic unit and
the respective generator from the electrical supply,
positioning the main switch and that of the control
panel to "off"
- Close the intercept devices of the sanitary system
- Empty the storage cylinder's secondary circuit.

11
Riello 7200/2 HV PLUS
1
3
2
9
6
4
7
8
5
14 Recycling/disposal
13 Cleaning the storage cylinder and dismantling the internal components
OUTSIDE
Cleaning the cover of the storage cylinder should be car-
ried out with damp cloths and water and soap. In the
case of stubborn stains dampen the cloth with a mix-
ture of 50% water and methylated spirit or with specic
products for the marks. Once the cleaning is nished, dry
the storage cylinder.
Do not use abrasive products, gasoline or trichloro-
ethylene.
INSIDE
Removing and checking the magnesium anodes
First magnesium anode:
- Remove the plug (1), the cover (2) and, with a wrench,
unscrew the anode-carrying plug (3)
Second magnesium anode:
- Partially remove the cover (4) and, with a wrench, un-
screw the anode-carrying plug (5)
Check the state of wear of the magnesium anode and
replace it if necessary.
Once the cleaning operations are nished, reassemble all
the components, following the above instructions in the
reverse order.
NOTE: the tightening torque of the anode-carrying plug
should be 25-30 Nxm.
Cleaning the parts inside the storage cylinder
- Remove the ange cover (6)
- Unscrew the bolts (7), remove the cover (8) and the
gasket (9).
- Clean the inside surfaces and remove the residues
through the opening.
Once the cleaning operations are nished, reassemble all
the components, following the above instructions in the
reverse order.
Tighten the bolts (7) with a “cross-head” system to
uniformly distribute pressure on the gasket.
- Load the storage cylinder's secondary circuit and check
the seal of the gaskets.
- Carry out a performance test.
When they are no longer needed, the components of the solar storage cylinder (boiler body, insulation and outer cover)
can be separated from one another and disposed of using the most environmentally compatible recycling procedure.

RIELLO S.p.A.
Via Ing. Pilade Riello, 7
37045 - Legnago (VR)
www.riello.com
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.