Riello 7200/2 HV PLUS User manual

cod. 20055743_EN rev. 2 05/2016
Solar storage cylinders 7200/2 - 1500-2000 HV PLUS
EN INSTALLATION INSTRUCTIONS

MODEL CODE
RIELLO 7200/2 - 1500 HV PLUS 20052784
RIELLO 7200/2 - 2000 HV PLUS 20052785
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
After removing the packaging make sure that
everything is there and undamaged, if not contact
the Agency that sold you the appliance.
The installation of the Riello 7200/2 HV PLUS solar
storage cylinder should be carried out by a company
certied which when the work is nished will issue
the owner with a declaration of conformity that the
installation is up to standard, i.e. in compliance with
regulations in force and with the recommendations
provided by the instruction booklet.
The solar storage cylinders Riello 7200/2 HV PLUS can
be installed in any room where an electrical protec-
tion level for the appliance greater than IP X0D is not
required. The room where it is installed should be
dry, to prevent rust forming. Respect the minimum
distances for maintenance and assembly.
The solar storage cylinder Riello 7200/2 HV PLUS should
only be used for the purposes for which it was made.
No contractual or extracontractual liability is accept-
ed for damage caused to people, animals, or objects
due to errors in installation, adjustment, or mainte-
nance or by improper use.
If necessary, use a pressure reducer for the water in-
put.
Use a safety valve calibrated in the manner shown
on the technical data label on the storage cylinder.
Use an expansion tank of a suitable size for the di-
mensions of the storage cylinder (it recommended
that this calculation be done by a heating engineer).
Before start-up it would be good to check the tight-
ness of the ange screws.
Maintenance of the storage cylinder should be car-
ried out at least once a year.
In the event of a water leak, disconnect the storage
cylinder from the main power supply, shut off the
water supply and promptly notify the Technical As-
sistance Centre or else professionally qualied per-
sonnel.
Check the state of wear of the magnesium anode and
replace it if necessary.
Not using the storage cylinder for a long period of
time requires that at least the following operations
be carried out:
- Drain the solar heating circuit
- Close the shut-off devices of the water system
- Switch off the boiler as described in the appli-
ance's instruction booklet.
- Turn off the system's main switch
If the storage cylinder is part of a solar system, mix
the anti-freeze (propylene glycol), available sep-
arately, with water in a variable percentage (30 to
50%) following the instructions in the operating and
maintenance manual.
Always ll the solar system with the water/glycol
mixture in the percentage reported in the operating
and maintenance manual.
This booklet is an integral part of the appliance and
so should be carefully preserved and should ALWAYS
accompany the storage cylinder even when it is sold
to another owner or user or when transferred to an-
other system. In case of loss or damage, please con-
tact the local Technical Assistance Centre in your Area
for a new copy.
Please remember that the use of products using electric
power and water involves respect for a few basic safety
rules such as:
Children and non-assisted disabled people are not
allowed to use the storage cylinder.
It is forbidden to touch the storage cylinder while
barefoot or if parts of your body are wet or damp.
Any cleaning operation is forbidden before discon-
necting the storage cylinder from the main power
supply by turning off the system's main switch as
well as the main switch of the boiler's control panel.
Do not modify adjustment devices without the man-
ufacturer's permission and relative instructions.
It is forbidden to pull, disconnect or twist the electric
cables coming out of the storage cylinder even if it is
disconnected from the main power supply.
It is forbidden to expose the storage cylinder to the
elements because it is not designed to function out-
doors.
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.
It is forbidden, in the event of a drop in pressure of
the solar system , to top up only with water as there
is a risk of freezing.
It is forbidden to use connection and safety devices
that have not been tested or that are not suitable for
use in solar system (expansion tanks, piping, insula-
tion).

4
Riello 7200/2 HV PLUS
DESCRIPTION 7200/2
1500 HV PLUS
7200/2
2000 HV PLUS
Cylinder type Vitried
Cylinder layout Vertical
Heat exchangers layout Vertical
Cylinder diameter with insulation 1200 1300 mm
Cylinder diameter without insulation 1000 1100 mm
Height with insulation 2185 2470 mm
Insulation thickness 100 mm
First magnesium anode (Ø x length) 32 x 700 mm
Second magnesium anode (Ø x length) 32 x 400 mm
Flange diameter 290/220 mm
Probe socket diameter 8 8 mm
Electric resistor socket (not supplied) 1"1/2 1"1/2 Ø
Lower coil water content 19,4 28,1 l
Upper coil water content 10,4 16,9 l
Lower coil heat exchange surface 3,4 4,6 m2
Upper coil heat exchange surface 1,8 2,8 m2
Lower coil absorbed power (*) 88 120 kW
Upper coil absorbed power (*) 47 73 kW
DHW (*) - bottom coil 2200 2900 l/h
DHW (*) - top coil 1200 1800 l/h
Necessary capacity heat exchanger – lower coil (*) 3,8 5,2 m3/h
Necessary capacity heat exchanger – upper coil (*) 2,0 3,1 m3/h
Storage cylinder maximum operating pressure 8 8 bar
Coils maximum operating pressure 6 6 bar
Maximum operating temperature 99 99 °C
Net weight with insulation 330 544 kg
Useful volume 1390 1950 I
Dispersion 250 305 W
67,32 kWh/24h
Insulation type Soft PU shells
Useful non-solar volume (Vbu) 525 800 l
(*) According to DIN 4708, to get domestic hot water with ΔT 20°C (80°/60°C) on the heat-exchanger, please observe the values showed in the datasheet
concerning absorbed power and necessary capacity heat-exchanger.
4 Technical data
3 Product description
The solar storage cylinders Riello 7200/2 HV PLUS can be
integrated into solar systems for the production of do-
mestic 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, and the magnesium anode with an "anti-corro-
sion" function
The Riello 7200/2 HV PLUS storage cylinders can be equipped
with a specic solar regulator and they can easily be in-
serted into solar system where the boilers or thermal sys-
tems act as auxiliary producers of heat.

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
AD
UAC
MC
RC
RL
R
M
EAF
(SB)
RE
BOILER
SOLAR
1
AD 2
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
RE - Electric resistor socket (not supplied)
AD1 - AD2 - Magnesium anode
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
O
AD1
D
E
F
G
H
I
L
C
M
N
A
B
EAF
(SB)
R
Psr
M
RL
RC
Psc
RE
AD2
TR
MC
UAC
DESCRIPTION MODELLO 7200/2
1500 HV PLUS 2000 HV PLUS
UAC - DHW outlet 1”1/2 F 1”1/2 F Ø
MC - Boiler ow 1”1/4 F 1”1/4 F Ø
RC - Boiler return 1”1/4 F 1”1/4 F Ø
M - Solar ow 1”1/4 F 1”1/4 F Ø
R - Solar return 1”1/4 F 1”1/4 F Ø
RL - DHW recirculation 1” F 1” F Ø
EAF (SB)- Domestic cold water inlet (cylinder drain) 1”1/2 F 1”1/2 F Ø
Psc - Diameter/length boiler probe socket 1/2" F 1/2" F Ø/mm
Psr - Diameter/length solar regulator probe socket 1/2" F 1/2" F Ø/mm
RE - Electric resistor socket (not supplied) 1”1/2 F 1”1/2 F Ø
AD1 - Diameter/length magnesium anode 32 x 700 Ø/mm
AD2 - Diameter/length magnesium anode 32 x 400 Ø/mm
TR - Thermometer 1/2" F 1/2" F Ø
A1230 1340 mm
B 1820 2000 mm
C280 260 mm
D415 400 mm
E525 660 mm
F1125 1205 mm
G 1220 1315 mm
H1315 1425 mm
I 1410 1485 mm
L1720 1870 mm
M1870 1990 mm
N 2185 2470 mm
O 1200 1300 mm
Net weight with insulation 330 544 kg
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.
The two magnesium anodes are supplied in a cardboard
box on the pallet
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
- Garanty certicate and label with bar code
- Catalogo ricambi
- Hydraulic test certicate
- n° 3 adjustable feet
- n° 2 threaded inserts for xing solar controller (accessory).
The two magnesium anodes are supplied 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.
37045 Legnago (VR)
Tel. [phone] - Fax [phone] - www.riello.it
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.