Regulus R0BC Series User manual

www.regulus.eu
R0BC 200 - 3000
R0BC 200 - 3000
EN
Installation and Operation Instructions
HOT WATER STORAGE TANKS
R0BC 200, R0BC 300, R0BC 400, R0BC 500, R0BC 750,
R0BC 1000, R0BC 1500, R0BC 2000, R0BC 2500 and R0BC 3000

│2
REGULUS - R0BC Hot Water Storage Tanks - www.regulus.eu
CONTENTS
1 Description ....................................................................................................................................... 3
1.1 Models ................................................................................................................................. 3
1.2 Tank protection .................................................................................................................... 3
1.3 Thermal insulation ............................................................................................................... 3
1.4 Connection points on the tank ............................................................................................. 3
1.5 Packing ................................................................................................................................ 3
2 General Information ......................................................................................................................... 3
3 Technical Data and Dimensions ..................................................................................................... 4
4 Operation .......................................................................................................................................... 5
5 Examples of Assigning Connection Points ................................................................................... 6
6 Installation and Commissioning .................................................................................................... 8
6.1 Connection to heat sources ................................................................................................. 8
6.2 Connection to a solar system ............................................................................................... 8
6.3 Heating rod installation ......................................................................................................... 8
6.4 Connection to water mains ................................................................................................... 8
6.5 Electronic anode rod installation .......................................................................................... 8
6.6 Commissioning ..................................................................................................................... 9
7 Tank Insulation ................................................................................................................................. 9
8 Maintenance, Replacement of Magnesium Anode Bar ................................................................. 10
9 Disposal ............................................................................................................................................ 10
10 Warranty ............................................................................................................................................ 10

3 │
REGULUS - R0BC Hot Water Storage Tanks - www.regulus.eu
1 - Description
R0BC Storage water heater (further “tank“) without heating coils enables connection of further 2 circuits via
external heat exchangers. An electric heating element can be installed inside and also another el. heating
element or a nned tube heat exchanger can be installed into the ange of the lateral inspection hole.
In order to reach proper working of the tank, it is necessary to design optimum hydraulics of the whole system,
i.e. position of circulation pumps for sources and heating circuits, valves, non-return valves etc.
1.1 - Models
Ten models of 212, 297, 420, 513, 763, 885, 1494, 2013, 2508 and 2841 l capacity enabling installation of an
electric heating rod or another heat source.
1.2 - Tank protection
Enameled inner surface guarantees long service life. Enamel is done according to DIN 4753 standard. Further
qualitative improvement is reached thanks to a magnesium anode installed inside the tank.
1.3 - Thermal insulation
Tanks of 200 l volume are supplied with 50 mm thick insulation, volumes from 300 to 500 l are supplied with
a hard polyurethane insulation 55 mm thick with a white PVC surface. Tanks of 750 and 1000 l volume are
supplied with a hard polyurethane insulation 75 mm thick with a white leatherette surface, tanks of 1500 l and
more have a 100 mm thick insulation.
1.4 - Connection points on the tank
4× lateral with G 5/4“ inner thread, for 2 circuits with external heat exchangers
2× lateral with G 6/4“ inner thread, for cold water inlet and hot water outlet (the thread for R0BC 1000 and
above is G2”)
3× lateral with G 1/2“ inner thread, for a temperature sensor and thermometer
1× lateral with G 1“ inner thread, for circulation (200l, 300l and 400l volumes have a G 3/4“ thread)
1× top with G 5/4“ inner thread, for a magnesium anode rod
1× lateral with G 6/4“ inner thread, for an el. heating rod
1× ange for the lateral inspection hole
1.5 - Packing
Tanks are delivered standing, each screwed to its pallet, packed in bubble wrap. It is forbidden to transport
and/or store the storage tanks in a horizontal position.
2 - General Information
The appliance shall be installed by a qualied person according to valid rules and Manufacturer‘s Instructions.
This Owners Manual is an integral and important part of the product and must be handed over to the User.
Read carefully the instructions in this Manual as they contain important information concerning safety,
installation, operation and maintenance. Keep this Manual for later reference.
Using the tank for other purposes than stated above is forbidden and the manufacturer accepts no
responsibility for damage caused by improper or wrong use.

│4
REGULUS - R0BC Hot Water Storage Tanks - www.regulus.eu
Ø P
Ø O
V
3 - Technical Data and Dimensions
Total tank volume: ...................................................................... a [l]
Max. working temperature - tank: .............................................. 95 °C
Max. working pressure - tank: .................................................... 10 bar
Empty weight: ............................................................................. b [kg]
The lower flange contains an anode rod in tanks: R0BC 1500 - R0BC 3000

5 │
REGULUS - R0BC Hot Water Storage Tanks - www.regulus.eu
4 - Operation
This tank is designed for operation in closed pressure circuits. Hot water is heated via external heat
exchangers in the tank by several possible heat sources like various kinds of heating boilers, renewable
energy sources (heat pumps, solar collectors). An electric heating rod can be installed into the tank for DHW
backup heating.
Hot water temperature should be set to 60-65 °C. This temperature guarantees the best operation and at the
same time, it prevents formation of Legionella bacteria.
TAPPINGS
R0BC200 R0BC300 R0BC400 R0BC500 R0BC750 R0BC1000 R0BC1500 R0BC2000 R0BC2500 R0BC3000
pos. conn. height
[mm] conn. height [mm] conn. height [mm] conn. height [mm] conn. height [mm] conn. height [mm] conn. height [mm] conn. height [mm] conn. height [mm] conn. height [mm]
DHW heating
W1 G 6/4“ F 110 G 6/4“ F 110 G 6/4“ F 120 G 6/4“ F 175 G 6/4“ F 220 G 2“ F 220 G 2“ F 315 G 2“ F 340 G 2“ F 430 G 2“ F 430
W2 G 6/4“ F 1120 G 6/4“ F 1565 G 6/4“ F 1540 G 6/4“ F 1595 G 6/4“ F 1590 G 2“ F 1840 G 2“ F 1935 G 2“ F 2210 G 2“ F 2250 G 2“ F 2550
W3 G 3/4“ F 884 G 3/4“ F 141 G 3/4“ F 1163 G 1“ F 1235 G 1“ F 1235 G 1“ F 1235 G 1“ F 1460 G 1“ F 1650 G 1“ F 1740 G 1“ F 2040
El. heating elements
E1 G 6/4“ F 629 G 6/4“ F 914 G 6/4“ F 891 G 6/4“ F 949 G 6/4“ F 890 G 6/4“ F 890 G 6/4“ F 1255 G 6/4“ F 1310 G 6/4“ F 1400 G 6/4“ F 1400
Control and safety
C1 G 1/2“ F 914 G 1/2“ F 1214 G 1/2“ F 1247 G 1/2“ F 1285 G 1/2“ F 1340 G 1/2“ F 1340 G 1/2“ F 1600 G 1/2“ F 1825 G 1/2“ F 1905 G 1/2“ F 2205
C2 G 1/2“ F 474 G 1/2“ F 654 G 1/2“ F 660 G 1/2“ F 685 G 1/2“ F 685 G 1/2“ F 685 G 1/2“ F 945 G 1/2“ F 985 G 1/2“ F 1075 G 1/2“ F 1075
TG 1/2“ F 929 G 1/2“ F 1384 G 1/2“ F 1411 G 1/2“ F 1480 G 1/2“ F 1460 G 1/2“ F 1680 G 1/2“ F 1825 G 1/2“ F 2090 G 1/2“ F 2130 G 1/2“ F 2430
Solar thermal system
U1 G 5/4“ F 264 G 5/4“ F 264 G 5/4“ F 286 G 5/4“ F 305 G 5/4“ F 385 G 5/4“ F 385 G 5/4“ F 470 G 5/4“ F 460 G 5/4“ F 550 G 5/4“ F 550
U2 G 5/4“ F 579 G 5/4“ F 849 G 5/4“ F 846 G 5/4“ F 865 G 5/4“ F 835 G 5/4“ F 835 G 5/4“ F 1180 G 5/4“ F 1160 G 5/4“ F 1250 G 5/4“ F 1300
U3 G 5/4“ F 679 G 5/4“ F 979 G 5/4“ F 1011 G 5/4“ F 985 G 5/4“ F 990 G 5/4“ F 990 G 5/4“ F 1330 G 5/4“ F 1450 G 5/4“ F 1540 G 5/4“ F 1790
U4 G 5/4“ F 994 G 5/4“ F 1294 G 5/4“ F 1361 G 5/4“ F 1335 G 5/4“ F 1440 G 5/4“ F 1440 G 5/4“ F 1735 G 5/4“ F 2000 G 5/4“ F 2040 G 5/4“ F 2430
Flange
L1 8 x M10 257 8 x M10 257 8 x M10 268 8 x M10 335 8 x M10 400 8 x M10 400 8 x M10 520 8 x M10 550 8 x M10 640 8 x M10 640
Magnesium anode rod
A1 G 5/4“ F 1240 G 5/4“ F 1685 G 5/4“ F 1656 G 5/4“ F 1742 G 5/4“ F 1800 G 5/4“ F 2069 G 5/4“ F 2205 G 5/4“ F 2470 G 5/4“ F 2600 G 5/4“ F 2900
A2 - - - - - - - - - G 5/4“ F 520 G 5/4“ F 550 G 5/4“ F 640 G 5/4“ F 640
R0BC
200
R0BC
300
R0BC
400
R0BC
500
R0BC
750
R0BC
1000
R0BC
1500
R0BC
2000
R0BC
2500
R0BC
3000
code 10586 10571 10587 8795 10364 10365 16715 16716 10501 8901
a [l] 212 297 420 513 763 885 1494 2013 2508 2841
b [kg] 52 59 80 120 192 213 230 280 325 360
V [mm] 1265 1710 1690 1780 1870 2120 2285 2550 2680 2980
øO [mm] 600 610 710 760 950 950 1200 1300 1400 1400
øP [mm] 500 500 600 650 790 790 1000 1100 1200 1200
anode
code
4025
9174*
13112***
4025
9174*
13112***
448
9174*
13112***
17432#
448
9174*
13112***
17432#
464
17372*
13112***
17428#
3698
17372*
13112***
17428#
464
14429*
13112***
17435#
448**
3698
14429*
13112***
17435#
464**
3698
14429*
13112***
17435#
464**
3698
14429*
13112***
17435#
464**
tipping
height [mm] 1405 1820 1830 1940 2100 2330 2590 2870 3030 3300
* electronic anode rod *** magnesium anode rod, chain type
# electronic anode rod with flange ** magnesium anode rod for the lower ange

│6
REGULUS - R0BC Hot Water Storage Tanks - www.regulus.eu
5 - Examples of Assigning Connection Points
Example I.
- DHW heating with solar collectors, electric backup
- Solar pool heating
Conn.
point Example I. Example II. Example III.
tank A tank B tank A tank B
A1 magnesium anode rod magnesium anode
rod
magnesium anode
rod
magnesium anode
rod
magnesium anode
rod
Tthermometer thermometer thermometer thermometer thermometer
E1 electric heating rod plug electric heating rod plug plug
W1 cold water inlet cold water inlet pre-heated water inlet
from tank A cold water inlet vpre-heated water inlet from tank A
U1 outlet to a solar heat
exchanger
outlet to a solar heat
exchanger
outlet to a solar heat
exchanger
outlet to a solar heat
exchanger
outlet to a district-
heating heat
exchanger
C2 temperature sensor temperature sensor temperature sensor temperature sensor temperature sensor
U2 inlet from a solar heat
exchanger
inlet from a solar heat
exchanger
inlet from a solar heat
exchanger
inlet from a solar
heat exchanger outlet to tank A
U3 plug plug plug inlet from tank B plug
W3 recirculation recirculation recirculation plug recirculation
C1 temperature sensor,
thermostat temperature sensor temperature sensor, thermostat temperature sensor temperature sensor
U4 plug plug plug plug
inlet from a district-
heating heat
exchanger
W2 hot water outlet pre-heated water
outlet to tank B hot water outlet pre-heated water outlet to tank B hot water outlet
L1 - ange blind blind blind blind blind
DHW
CW
R0BC
3-way
zone valve
recirculation
pool
E
E
T
bbbbb
B
bbb

7 │
REGULUS - R0BC Hot Water Storage Tanks - www.regulus.eu
Example II.
- DHW heating with solar collectors, electric backup
- Recirculation preheating with solar collectors
- Suitable for large solar systems
Example III.
- DHW heating with solar collectors, backup with district heating, heat exchange between tanks
- Suitable for large solar systems
Table of limit values for total dissolved solids in hot water
Description pH Total dissolved
solids (TDS)
Ca Chlorides Mg Na Fe
Max. value 6.5 - 9.5 600 mg/l 40 mg/l 100 mg/l 20 mg/l 200 mg/l 0,2 mg/l
DHW
CW
R0BC
recirculation
R0BC
E
E
T
bbbbb
B
bbb
A
B
DHW
CW
R0BC
R0BC
district heating
district heating
recirculation
E
E
T
bbbbb
B
bbb
AB

│8
REGULUS - R0BC Hot Water Storage Tanks - www.regulus.eu
6 - Installation and Commissioning
Installation must meet valid rules and may be done only by qualied staff. The tank shall be placed on the
oor, as close to the heat source as possible.
Warning: Defects caused by improper installation, use or handling are not covered by warranty.
6.1 - Connection to heat sources
Connect heating circuits to the inlet and outlet of the external heat exchanger*. The heat source for the tank -
external heat exchanger - connect with G 5/4” couplings to the two sleeves.
6.2 - Connection to a solar system
The tank can be used with a solar system. In such a case, the inlet for hot heat-carrying liquid coming from
the solar system shall be connected to the 2 lower sleeves (G 5/4”) via an external heat exchanger. The
lower G 5/4“ outlet connects to the return piping from the external solar heat exchanger, another G 5/4“outlet
connects to the inlet for hot heat-carrying liquid from the external heat exchanger (see section 5). Insulate all
the piping between the tank and the solar system.
6.3 - Heating rod installation
The G 6/4“ side sleeve is designed to accommodate an electric heating rod. Heating rods of output up to 12 kW
can be used (depending on the tank diameter and rod length), connected either directly to the mains (thermostat-
equipped rods), or to a heating system controller. The installation may be done by qualied staff only.
Warning: Electric heating elements shall be protected by a safety thermostat.
6.4 - Connection to water mains
DHW piping shall be done according to valid rules. G 6/4” threaded couplers are used to connect the tank
to a cold water inlet and hot water outlet (G 2” for volumes of 1000l and over). A 6bar safety valve shall
be installed at the cold water inlet. Installation of a reducing valve to the tank inlet is recommended. If the
pressure from water mains exceeds 6 bar, a reducing valve is necessary. In order to prevent water loss, an
expansion tank should be installed at the cold water inlet as well (8 l volume for R0BC 200, 12 l volume for
R0BC 300 18 l volume for R0BC 400, 24 l volume for R0BC 500, 35 l volume for R0BC 750, 50 l volume
for R0BC 1000, 60 l volume for R0BC 1500, 80 l volume for R0BC 2000, 100 l volume for R0BC 2500 l and
2×60 l volume for R0BC 3000).
Should the water be too hard, install a water softener before the tank. In case the water contains mechanical
impurities, install a strainer.
A suitable thermostatic mixing valve should be installed at the hot-water outlet from the tank, preventing too
hot water from entering the taps.
Install a drain valve to the lowest point of the tank.
Complete DHW piping shall be properly insulated.
6.5 - Electronic anode rod installation
A so called electronic anode rod can be used instead of the magnesium one. Its principle advantage is that
its proper function is signaled by an indication lamp while a magnesium anode rod needs to be taken out for
check. In such a case, just visual check of the indication lamp is sufcient.
A space equal to the anode length (see the table below) is needed between the tank top and ceiling to install/
exchange the electronic anode rod. In order to protect the tank properly and meet its warranty conditions,
select an anode from the table below.
* external heat exchangers are not included in the scope of supply of R0BC tanks.

9 │
REGULUS - R0BC Hot Water Storage Tanks - www.regulus.eu
Electronic Anode Kits for R0BC Hot Water Storage Tanks
For tanks El. Anode
Kit code -
replacement
Anode rod length El. Anode Kit
code w. lower
ange*
Anode rod length
R0BC 200, R0BC 300 9174 500 (350/150) - -
R0BC 400, R0BC 500 9174 500 (350/150) 17432 500 (350/150) + 350 (200/150)
R0BC 750, R0BC 1000 17372 800 (550/250) 17428 800 (550/250) + 450 (200/250)
R0BC 1500, R0BC 2000
R0BC 2500, R0BC 3000
14429 800 (550/250) + 600 (350/250) 17435 800 (550/250) + 600 (350/250)
* The Kit shall be used when an electric heating element needs to be installed in the lower flange.
6.6 - Commissioning
Fill the heating circuits with the appropriate uids and air-bleed the entire system. Check all connections for
leaks and verify the system pressure.
The quality of top-up and heating water is set by ČSN 07 7401:1992. Hot water quality must meet the
conditions shown in the Table of limit values for total dissolved solids in hot water, page 7 of this
Manual.
Fill the heating circuits with the appropriate uids and air-bleed the entire system. Check all connections for
leaks and verify the system pressure. Set the heating controller in compliance with the documentation and
manufacturer’s recommendations. Check regularly a proper function of all control and adjusting elements.
7 - Tank Insulation
Product description
Thermal insulation is a component of tanks that prevents heat losses. Thermal insulation of polyurethane foam
with zipped PVC layer is used.
Warning
Insulation dismantling and installation shall be done in two or three persons, depending on its size. The foam
insulation with zipper must not be dismantled/installed at temperatures below 20 °C. If this cannot be avoided,
the insulation shall be pre-warmed in another room to at least 20 °C. It is impossible to install insulation of
lower temperature, there is a risk of damage, esp. to the zipper.
Do not use any tools for installation.
Keep away from open re.
Warranty on insulation
□ Warranty shall become null and void if:
○ the product was used for other purposes than intended.
□ Warranty does not cover:
○ usual wear and tear,
○ damage caused by re, water, electricity or a natural disaster,
○ defects caused by failure to use the product in compliance with its intended purpose,
by improper use and insufcient maintenance,
○ defects caused by mechanical damage to the product,
○ defects caused by tampering or incompetent repair.

│10
REGULUS - R0BC Hot Water Storage Tanks - www.regulus.eu
8 - Maintenance, Replacement of
Magnesium Anode Rod
If the tank is tted with a heating element, disconnect it from the mains rst. Clean the exterior of the tank with
a soft cloth and a mild detergent.
Never use abrasive cleaners or solvents.
Check all connections for leaks. The tanks are equipped with an anti-corrosion sacrice magnesium anode
rod. The anode rod shall be checked within 12 months after commissioning and subsequently always not
later than 12 months after the last check. In locations where water contains more ferrites or calcites, it is
recommended to check the anode every 6 months. If more than 1/3 of its total volume is consumed, the anode
shall be replaced with a new one. Disregarded of its state, the anode rod shall be replaced with a new one
within 24 months from commissioning. In case an electronic anode is used, the above described procedures
are not necessary. Then only a visual check of the indication lamp is necessary every 3 months. Proper
working of the Electronic Anode is described in its User’s Manual.
If damage to a tank occurs due to neglected substitution of a magnesium anode rod or a non-working
electronic anode, the warranty cannot be claimed.
9 - Disposal
Packing shall be disposed of in compliance with the valid rules. When the product reaches the end of its life,
it shall not be disposed of as household waste. It shall be dropped off at a Local Waste Recycling Center.
Insulation shall be recycled as plastic and the steel vessel as scrap iron.
10 - Warranty
This product is covered by warranty according to the conditions described in this Manual and according to
the Warranty Certicate. A Warranty Certicate is an integral part of the supply. Tank transport or storing in
a horizontal position is considered a warranty violation!

11 │
REGULUS - R0BC Hot Water Storage Tanks - www.regulus.eu

©2019 We reserve the right to errors, changes and improvements without prior notice.
REGULUS spol. s r.o.
E-mail: [e-mail]
Web: www.regulus.eu
v1.4-08/2019