Regulus R2BC 200 User manual

www.regulus.eu
R2BC 200 - 3000
R2BC 200 - 3000
EN
Installation and Operation Manual EN
HOT WATER STORAGE TANKS
R2BC 200, R2BC 300, R2BC 400, R2BC 500, R2BC 750,
R2BC 1000, R2BC 1500, R2BC 2000, R2BC 2500 and R2BC 3000

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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 Packaging .......................................................................................................................... 3
2 General Information ...................................................................................................................... 3
3 Operation ....................................................................................................................................... 3
4 Technical Data and Dimensions of R2BC Models ..................................................................... 4
5 Typical Installation Example ........................................................................................................ 6
6 Installation and Commissioning .................................................................................................. 7
6.1 Connection to heat sources ............................................................................................. 7
6.2 Connection to a solar thermal system .............................................................................. 7
6.3 Heating element installation ............................................................................................. 7
6.4 Connection to water mains .............................................................................................. 7
6.5 Electronic anode rod installation ...................................................................................... 7
6.6 Commissioning ................................................................................................................. 8
7 Tank Insulation ............................................................................................................................. 9
8 Maintenance, Replacement of Magnesium Anode Bar ............................................................. 10
9 Disposal ......................................................................................................................................... 10
10 Warranty ......................................................................................................................................... 10

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1 - Description
R2BC Hot Water Storage Tank (further “tank“) with two enameled heat exchangers with G 5/4” connections
(e.g. for connecting a solar thermal system and a heat pump), enabling installation of an electric heating
element and also another el. heating element or a finned tube heat exchanger into the flange 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 213, 299, 420, 514, 762, 883, 1493, 2007, 2510 a 2841 l capacity enabling installation of an
electric heating element 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. From
R2BC 400 upwards each tank has 2 anode rods. The R2BC 3000 tank has 3 anode rods.
1.3 - Thermal insulation
R2BC 200 to 500 tanks are supplied with a hard polyurethane insulation 50 mm thick with a white PVC surface.
R2BC 750 and 1000 tanks are supplied with a hard polyurethane insulation 75 mm thick with a white PU lea-
ther surface. R2BC 1500, 2000, 2500 and 3000 tanks have the insulation 100 mm thick. The insulation can be
detached for easier handling.
1.4 - Connection points on the tank
4x lateral with G 5/4“ inner thread, of the heating heat exchangers circuits
2× lateral with G 5/4“ inner thread, for cold water inlet and hot water outlet ( from R2BC 1500 - 2 G“)
3× lateral with G 1/2“ inner thread, for temperature sensors and a thermometer
1× lateral with G 1“ inner thread, for recirculation
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 element
1× flange for the lateral inspection hole
1.5 - Packaging
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 qualified person according to valid rules and Manufacturer‘s Instructions.
This 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.
3 - Operation
This tank is designed for operation in pressure circuits. Hot water is heated in the integrated hot-water heat ex-
changers (heating coils) inside the tank from several possible heat sources like various kinds of heating boilers,
renewable energy sources (heat pumps, solar collectors).
Hot water temperature should be kept between 60 and 65°C. This temperature guarantees the optimal operation
of hot water storage tanks and at the same time, it prevents formation of Legionella bacteria.

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4 - Technical Data and Dimensions of R2BC
Models
Tank code .......................................................................... a
Tank total volume ............................................................... b
Volume of the upper heat exchanger ................................ c
Volume of the lower heat exchanger ................................. d
Surface area of the upper heat exchanger ....................... e
Surface area of the lower heat exchanger ....................... f
Empty weight (transport) ................................................... g
Max. working temperature - tank ....................................... 95 °C
Max. working temperature - heat exchangers ................. 110 °C
Max. working pressure - tank ........................................... 10 bar
Max. working pressure - heat exchangers ........................ 10 bar
DHW heating ∆t=35 °C (80/60 - 10/45) - upper HX .......... h
DHW heating ∆t=35 °C (80/60 - 10/45) - lower HX .......... i
N
O
V

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Model R2BC
200
R2BC
300
R2BC
400
R2BC
500
R2BC
750
R2BC
1000
R2BC
1500
R2BC
2000
R2BC
2500
R2BC
3000
Tank code a 6481 6482 6483 6484 6485 5758 16712 16713 12432 8474
Tank volume [l] b 212 299 420 514 762 883 1493 2007 2510 2841
Volume of the upper heat exchanger [l] c 6 7 7 7 14 15 15 19 22 23
Volume of the lower heat exchanger [l] d 6 10 12 12 14 15 27 29 30 32
Surface of the upper heat exchanger [m2] e 0,8 0,9 0,9 0,9 2,4 2,5 2,5 3 3,5 3,8
Surface of the lower heat exchanger [m2] f 0,8 1,5 1,9 1,9 2,4 2,5 4,2 4,5 4,8 5,2
Empty weight (transport) [kg] g 96 124 150 168 270 285 431 505 635 698
DHW heating ∆t=35 °C (10/45)** - upper
HE [l/h] ([kW]) h320 (13)
350
(14)
350
(14)
350
(14)
940
(38)
990
(40)
990
(40)
1190
(48)
1380
(56)
2744
(112)
DHW heating ∆t=35 °C (10/45)** - lower
HE [l/h] ([kW]) i320 (13)
590
(24)
740
(30)
740
(30)
940
(38)
990
(40)
1660
(67)
1780
(72)
1900
(77)
3885
(158)
Static loss W 67 82 96 102 113 121 132 182 329 354
Dimensions [mm] V 1265 1710 1690 1780 1870 2120 2285 2550 2680 2980
ø N 610 610 710 760 950 950 1200 1300 1400 1400
ø O 500 500 600 650 790 790 1000 1100 1200 1200
Tipping height [mm] 1410 1820 1840 1940 2100 2330 2590 2870 3030 3300
Magnesium anode rod G5/4“
Code
A1 448 464 4025 448 3698 3698 3698 3698 3698 3698
Magnesium anode rod G5/4“ A2 - - 4025 4025 448 448 448 464 464 464
Magnesium anode rod G5/4“ A3 - - - - - - - - - 464
Magnesium anode rod, chain type G5/4“ * - - - - 13112 13112 13112 13112 13112 13112
*Possible replacement anode A1 ** heating water inlet temperature 60 °C
CONNECTIONS
R2BC200 R2BC300 R2BC400 R2BC500 R2BC750 R2BC1000 R2BC1500 R2BC2000 R2BC2500 R2BC3000
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 1“ F 67 G 1“ F 67 G 1“ F 79 G 5/4“ F 175 G 5/4“ F 220 G 5/4“ F 220 G 2“ F 315 G 2“ F 340 G 2“ F 430 G 2“ F 430
W2 G 1“ F 1164 G 1“ F 1608 G 1“ F 1581 G 5/4“ F 1595 G 5/4“ F 1590 G 5/4“ 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 1141 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 884 G 1/2“ F 1141 G 1/2“ F 1163 G 1/2“ F 1235 G 1/2“ F 1235 G 1/2“ F 1235 G 1/2“ F 1460 G 1/2“ F 1650 G 1/2“ F 1740 G 1/2“ F 2040
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
Control and safety
X1 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
X2 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
X3 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 2050 G 5/4“ F 1300
X4 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
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 1245 G 5/4“ F 1690 G 5/4“ F 1665 G 5/4“ F 1760 G 5/4“ F 1830 G 5/4“ F 2095 G 5/4“ F 2285 G 5/4“ F 2550 G 5/4“ F 2600 G 5/4“ F 2900
A2 - - - - G 5/4“ F 268 G 5/4“ F 335 G 5/4“ F 400 G 5/4“ F 400 G 5/4“ F 520 G 5/4“ F 550 G 5/4“ F 640 G 5/4“ F 640
A3 - - - - - - - - - - - - - - - - - - G 5/4“ F 1640

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With a boiler and solar thermal system
5 - Typical Installation Example
KEY 1 – R2BC hot water storage tank 2 – DHW expansion vessel 3 – CSE SOL solar pump station 4 – solar expansion vessel 5 – solar collectors 6 – boiler (natural gas, electric...) 7 – pump station for DHW recirculation – CSE TVMIX ZV 8 – safety kit for HW storage tank 9 – DHW expansion vessel 10 – el. heating element (optional) SV – cold water TV – hot water CV – hot water recirculation ÚT – central heating (heating system) KK – ball valve ZV – check valve AOV – automatic air vent valve PTR – pressure temperature relief valve REDV – pressure reducing valve (optional) VK – drain valve SVE – expansion vessel service valve PV-ÚT – safety valve for heating system MFB – Magnet Filterball

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6 - Installation and Commissioning
Installation must meet valid rules and may be done only by qualified staff. The tank shall be placed on the floor,
as close to the heat source as possible.
Defects caused by improper installation, use or handling are not covered by warranty.
6.1 - Connection to heat sources
Connect the heat source to the inlet and outlet of the heat exchanger using G 5/4“ fittings.
6.2 - Connection to a solar thermal system
This tank can also be used with a solar thermal system. In such a case, the inlet from a solar thermal system
connects to the upper G 5/4“ sleeve of the heating heat exchanger marked X1, and the lower outlet X4 connects
to the return piping to the solar thermal system. Insulate all the piping between the tank and the solar thermal
system.
6.3 - Heating element installation
The G 6/4“ side connection marked E1 is designed to accommodate an electric heating element. Heating ele-
ments of output up to 12 kW can be used (depending on the tank diameter and element length), connected
either directly to the mains (thermostat-equipped elements), or via a heating system controller. The installation
may be done by qualified 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. Pipe fittings are used to connect the tank to a cold water inlet
and hot water outlet. Install a safety group at the cold water inlet that meets the requirements of ČSN 06 0830
- e.g. code 17387 or 18678 depending on the tank volume. Installation of a pressure reducing valve to the tank
inlet is recommended. If the pressure from water mains exceeds 6 bar, a pressure reducing valve is necessary.
In order to prevent water loss, an expansion vessel should be installed at the cold water inlet as well (8 l volume
for R2BC 200, 12 l volume for R2BC 300 and 400, 18 l volume for R2BC 500, 24 l volume for R2BC 750, 35 l
volume for R2BC 1000, 60 l volume for R2BC 1500, 80 l volume for R2BC 2000, 100 l volume for R2BC 2500
and 2×60 l volume for R2BC 3000).
Should the water be too hard, install a water softener before the tank. In case the water contains mechanical
impurities, install a filter.
It is also recommended to install a corresponding anti-scald valve that prevents 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
An electronic anode rod can be installed instead of the magnesium one. Its principle advantage is that it is not
necessary to dismantle it from the tank to determine its function. In such a case, just visual check of the electro-
nic anode rod is sufficient.
A space equal to the el. anode length is needed between the tank top and ceiling to install/replace the electronic
anode rod, see the table below. In order to protect the tank properly and meet its warranty conditions, select the
proper electronic anode rod from the table below.
Electronic Anode Kits for R2BC Hot Water Storage Tanks
For tanks El. Anode
Kit code -
replacement
Anode rod length El. Anode Kit
code w. lower
ange*
Anode rod length
R2BC 200, R2BC 300 9174 500 (350/150) - -
R2BC 400, R2BC 500 17368 500 (350/150) + 350 (200/150) 17432 500 (350/150) + 350 (200/150)
R2BC 750, R2BC 1000 17369 600 (350/250) + 450 (200/250) 17433 600 (350/250) + 450 (200/250)
R2BC 1500, R2BC 2000
R2BC 2500 14429 800 (550/250) + 600 (350/250) 17435 800 (550/250) + 600 (350/250)
R2BC 3000 17371 800 (550/250) + 750 (550/200)
+ 800 (550/250) 17436 800 (550/250) + 750 (550/200) + 800 (550/250)
* The Kit shall be used when an electric heating element needs to be installed in the lower flange.

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6.6 - Commissioning
Hot water quality must meet the conditions shown in the Table of limit values for total dissolved solids
in hot water.
Fill the heating circuits with the appropriate fluids 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 ma-
nufacturer’s recommendations. Check regularly a proper function of all control and adjusting elements.
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
Table of limit values for total dissolved solids in hot water

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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 the tank 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 fire.
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 fire, water, electricity or a natural disaster,
○ defects caused by failure to use the product in compliance with its intended purpose,
by improper use and insufficient maintenance,
○ defects caused by mechanical damage to the product,
○ defects caused by tampering or incompetent repair.
If damage to a tank occurs due to neglected substitution of a magnesium anode rod or a non-working electro-
nic anode, warranty cannot be claimed.

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8 - Maintenance, Replacement
of Magnesium Anode Rod
If the tank is fitted with a heating element, disconnect it from the mains first. 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 sacrifice 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 repla-
ced 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 electro-
nic anode, 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. Insula-
tion 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 Certificate. A Warranty Certificate is an integral part of the supply. Tank transport or storing in a hori-
zontal position is considered a warranty violation!

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©2022 We reserve the right to errors, changes and improvements without prior notice.
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E-mail: [email protected]
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v2.0-05/2022