Regulus RBC 200 HP User manual

www.regulus.eu
RBC 200 HP - 1500 HP
RBC 200 HP - 1500 HP
EN
Installation and Operation Manual
Hot Water Storage Tanks
with upsized heating-water heat exchanger
RBC 200 HP, RBC 300 HP, RBC 300 HP 3.2, RBC 400 HP,
RBC 500 HP, RBC 750 HP, RBC 1000 HP, RBC 1500 HP

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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 .......................................................................................................................................... 4
4 Technical Data and Dimensions of RBC HP Models .................................................................... 5
5 Typical Installation Examples ......................................................................................................... 7
6 Installation and Commissioning .................................................................................................... 9
6.1 Connection to heat sources ................................................................................................. 9
6.2 Connection to a solar thermal system ................................................................................. 9
6.3 Heating element installation ................................................................................................. 9
6.4 Connection to water mains .................................................................................................. 9
6.5 Electronic anode installation ................................................................................................ 9
6.6 Commissioning .................................................................................................................... 10
7 Insulation .......................................................................................................................................... 10
8 Maintenance and Magnesium Anode Rod Replacement ............................................................. 11
9 Disposal ............................................................................................................................................ 11
10 Warranty ........................................................................................................................................... 11

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1 - Description
RBC HP Hot water storage tank for domestic use (further HW tank) with one upsized heat exchanger, G 5/4”
connection (750, 1000, 1500 l HW tanks have a G 6/4” connection). These HW tanks (except for 1000 and
1500 l variants) permit installation of an electric heating element into a G 6/4” connection.
HW storage tanks with an upsized heat exchanger are especially suitable to be combined with a heat pump.
For a proper operation of the HW tank, it is necessary to design optimum hydraulics of the whole heating
system, i.e. position of circulation pumps for sources and heating circuits, valves, non-return valves etc.
1.1 - Models
Eight models of 205, 2×299, 407, 509, 764, 884 a 1516 l capacity.
1.2 - Tank protection
Enamel on the inner surface guarantee long service life. Enamel is done according to DIN 4753 standard.
Further qualitative improvement is reached thanks to a magnesium anode rod installed inside the tank (bigger
tanks are fitted with more anode rods). The RBC HP 3.2 variant and all tanks from 400 l upwards are fitted
with 2 magnesium anode rods. Tanks of 750, 1000 and 1500 l volume are fitted with 3 magnesium anode rods.
1.3 - Thermal insulation
Tanks up to 500l are supplied with a hard polyurethane insulation 55 mm thick with a white PVC surface. 750
and 1000l tanks are supplied with a hard polyurethane insulation 75 mm thick with white PU leather surface.
1500 l tank features 100 mm thick insulation.
1.4 - Connection points on the tank
2× lateral with G 5/4“ inner thread, for the heating coil (750, 1000 and 1500 l tanks have a G 6/4” thread)
2× lateral with G 5/4“ inner thread, for cold water inlet and hot water outlet (200, 300 and 400 l tanks have
a G 1” thread, 1500 l tank has a G 2”)
2× lateral with G 1/2“ inner thread, for a temperature sensor and thermometer (RBC 1000 HP and
RBC 1500 HP tanks have one extra sheath)
1× lateral with G 1“ inner thread, for circulation (200, 300 and 400 l tanks have a G ¾” thread)
1× top with G 5/4“ inner thread, for a magnesium anode rod (750, 1000 and 1500 l tanks have 2 upper anode
rods)
1× lateral with G 6/4“ inner thread, for an el. heating rod (not in RBC 1000 HP and RBC 1500 HP)
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 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.

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3 - Operation
This tank is designed for operation in closed pressure circuits. Hot water is heated in the tank via the integra-
ted hydronic heat exchanger from a selected heat source. HP models of HW tanks with upsized heat exchan-
ger surface area are especially suitable for DHW heating by a heat pump; however also other heat sources
can be used, like e.g. a hot-water boiler or 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.

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4 - Technical Data and Dimensions of
RBC HP Models
Tank code .................................................................. a
Total tank volume ....................................................... b
Heating heat exchanger volume ................................ c
Heatingheat exchanger surface area ......................... d
Empty weight (transport) ........................................... e
Max. working temperature - tank ............................... 95 °C
Max. working temperature - heating heat exch. ......... 110 °C
Max. working pressure - tank .................................... 10 bar
Max. working pressure - heating heat exch. .............. 10 bar
DHW heating ∆t=35 °C (80/60 - 10/45) - heat exch. ... f
Ø O
Ø P
V
Model RBC
200 HP
RBC
300 HP
RBC
300 HP 3.2
RBC
400 HP
RBC
500 HP
RBC
750 HP
RBC
1000 HP*
RBC
1500 HP*
Tank code a 10534 10535 18748 10536 8546 10537 7883 16714
Tank volume [l] b 205 299 299 407 509 764 884 1516
Heating heat exch. volume [l] c 13 23 27 31 36 48 64 70
Heating heat exch. surface
area [m2]
d 3 3,8 3,2 5 5,9 7,5 10 11
Empty weight (transport) [kg] e 128 155 130 187 220 290 320 344
DHW heating ∆t=35 °C
(60/40 - 10/45) [l/h] ([kW])
f 940
(38)
1190
(48)
990
(40)
1580
(64)
1850
(75)
2350
(95)
3140
(127)
3460
(140)
Dimensions [mm] V 1265 1710 1710 1655 1785 1870 2120 2285
ø O 610 610 604 710 760 950 950 1200
ø P 500 500 500 600 650 790 790 1000
Tipping height [mm] - 1410 1820 1820 1810 1950 2100 2330 2590
Magnesium anode rod (code) 464 3698 448 3698 3698 2 x 3698 2 x 3698 2 x 3698
Magnesium anode rod for
the lower ange (code) - - 4611 4025 4025 448 448 448
Magnesium anode rod,
chain type (code) - - - - 13112 13112 13112
*RBC 1000 HP and RBC 1500 HP tanks have no G 6/4“ connection for a heating element but they have an extra G 1/2“ connection for a control
& safety sensor.

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CONNECTIONS
RBC 200 HP RBC 300 HP RBC 300 HP 3.2 RBC 400 HP RBC 500 HP RBC 750 HP RBC 1000 HP RBC 1500 HP
pos. description 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 cold water G 1“ F 67 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 W2 hot water G 1“ F 1164 G 1“ F 1609 G 1“ F 1609 G 1“ F 1541 G 5/4“ F 1595 G 5/4“ F 1590 G 5/4“ F 1840 G 2“ F 1935
W3 recirculation G 3/4“ F 990 G 3/4“ F 1200 G 3/4“ F 840 G 3/4“ F 1205 G 1“ F 1375 G 1“ F 1140 G 1“ F 1235 G 5/4“ F 1460
Auxiliary heat source
E1 electric heating element G 6/4“ F 940 G 6/4“ F 1150 G 6/4“ F 950 G 6/4“ F 1165 G 6/4“ F 1335 G 6/4“ F 1300 - - - -
Control and safety
C1 temperature sensor G 1/2“ F 593 G 1/2“ F 653 G 1/2“ F 1300 G 1/2“ F 690 G 1/2“ F 825 G 1/2“ F 775 G 1/2“ F 1193 G 1/2“ F 1260 C2 temperature sensor - - - - G 1/2“ F 1000 - - - - - - G 1/2“ F 542 G 1/2“ F 870
C3 temperature sensor - - - - G 1/2“ F 450 - - - - - - - - - -
T temperature indicator G 1/2“ F 1040 G 1/2“ F 1430 G 1/2“ F 1465 G 1/2“ F 1385 G 1/2“ F 1475 G 1/2“ F 1450 G 1/2“ F 1730 G 1/2“ F 1825
Heat sources
X1 supply from heat source G 5/4“ F 890 G 5/4“ F 1080 G 5/4“ F 1455 G 5/4“ F 1100 G 5/4“ F 1235 G 6/4“ F 1250 G 6/4“ F 1685 G 6/4“ F 1620
X2 return to heat source G 5/4“ F 210 G 5/4“ F 230 G 5/4“ F 230 G 5/4“ F 250 G 5/4“ F 295 G 6/4“ F 370 G 6/4“ F 345 G 6/4“ F 450
Flange
L1 flange 8 x M10 257 8 x M10 270 8 x M10 257 8 x M10 280 8 x M10 360 8 x M10 400 8 x M10 400 8 x M10 530
Magnesium anode rod
A1 magnesium anode rod - - - - G 5/4“ F 1710 - - - - G 5/4“ F 1790 G 5/4“ F 2040 G 5/4“ F 2205 A2 magnesium anode rod - - - - M8 257 G 5/4“ F 280 G 5/4“ F 360 G 5/4“ F 400 G 5/4“ F 400 G 5/4“ F 530
A3 magnesium anode rod G 5/4“ F 1230 G 5/4“ F 1675 - - G 5/4“ F 1620 G 5/4“ F 1750 G 5/4“ F 1790 G 5/4“ F 2040 G 5/4“ F 2205

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5 - Typical Installation Examples
Example I.
- with a heat pump
KEY 1 – heat pump 2 – pump station for heat pump – CSE TC IPWM MFB 3 – DHW expansion vessel 4 – three-way zone valve, DHW/HC 5 – heating system expansion vessel 6 – electric heating elements for heating system 7 – PS N+ thermal store 8 – pump station for heating system - CSE2 MIX 9 – electric heating element for DHW 10 – RBC HP hot water storage tank 11 – pump station for DHW recirculation – CSE ZV 12 – safety kit for HW storage tank 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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Example II.
- with a solar thermal system
KEY 1 – RBC HP hot water storage tank 2 – CSE SOL solar pump station 3 – solar thermal system expansion vessel 4 – solar collectors 5 – pump station for DHW recirculation – CSE TVMIX ZV 6 – safety kit for HW storage tank 7 – DHW expansion vessel 8 – electric heating element 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

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6 - Installation and Commissioning
Installation shall 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 the heat source to the X1, X2 inlet and outlet of the heat exchanger using G 5/4” ttings.
6.2 - Connection to a solar thermal system
The tank can be used with a solar thermal system. In such a case, the inlet from the solar thermal system shall
be connected to the upper connection X1 of the G 5/4” heat exchanger and the lower outlet X2 to the return
piping to the solar thermal system. Insulate meticulously all the piping between the tank and the solar thermal
system using insulation suitable for solar systems.
6.3 - Heating element installation
An electric heating element can be installed in the side connection E1 with a G 6/4“ thread (the RBC 1000 HP
and RBC 1500 HP tanks are not tted with a connection for the installation of an electric heating element).
Tanks of all sizes can be retrotted with another heating element by inserting it into the lower ange L1. The
precondition is that the magnesium anode rods are replaced with an electronic anode rod and the factory-
-supplied anges with a new ange containing a G 6/4“ connection for the installation of an electric heating
element and a G 1/2“ connection for the electronic anode rod. Ordering codes for kits with el. anode rods
with a ange for the installation of another heating element can be found in the table in chapter 6.5. Heating
elements 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 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 5/4“ ttings are used to connect the tank to a cold water
inlet and hot water outlet. A safety kit shall be installed at the cold water inlet that meets the requirements of
ČSN 06 0830, e.g. codes 17387 or 18678 depending on the tank volume. Installation of a reducing valve at
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 RBC 200 HP, 12 l volume for RBC 300 HP and 400 HP, 18 l volume for RBC 500 HP, 24 l volume for RBC
750 HP, 35 l volume for RBC 1000 HP, 60 l volume for RBC 1500 HP).
Should the water be too hard, install a water softener before the tank. In case the water contains mechanical
impurities, install a strainer.
Install a PTR valve at the hot-water outlet from the tank, e.g. code 17240 with a connection kit 17526. A suita-
ble thermostatic mixing valve should be also installed, 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. In such a case it is not necessa-
ry to take out the rod for check, just visual check of the indication lamp of the electronic anode rod is sufcient.
To install the electronic anode rod, it is necessary to remove all magnesium anode rods from the tank. Sufci-
ent space is needed between above the tank permitting to install the electronic anode rod, see the table below
with recommended anode lengths.

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Electronic Anode Kits for RBC HP Hot Water Storage Tanks.
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.
Fill the tank with cold water following this procedure:
- open the shut-off valve at the tank inlet;
- open hot water on the mixer tap, as soon as water starts to ow out of the mixer tap, the lling of the
tank is nished, close the mixer;
- check the tightness of all connections and 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.
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.
7 - Tank Insulation
Product description
Thermal insulation is a component of tanks that reduces 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. The foam insulation with a PVC
foil and 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 a 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 another natural disaster,
For tanks El. Anode
Kit code -
replacement
Anode rod length El. Anode Kit
code w. lower
ange*
Anode rod length
RBC 200 HP, RBC 300 HP 17375 750 (550/200) 17434 750 (550/200) + 350(200/150)
RBC 300 HP 3.2 - - 17432 500 (350/150) + 350 (200/150)
RBC 400 HP, RBC 500 HP 17376 750 (550/200) + 350 (200/150) 17434 750 (550/200) + 350(200/150)
RBC 750 HP, RBC 1000 HP 17377 800 (550/250) + 450 (200/250) 17428 800 (550/250) + 450 (200/250)
RBC 1500 HP 14377 800 (550/250) + 450 (200/250) 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.
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

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○ 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.
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 supplied with an anti-corrosion sacrice magnesium anode rod
as standard that protects its inner parts against corrosion. For this reason it is necessary that the anode rod is
checked regularly, namely 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 magnesium 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 rod is described in its User’s Manual.
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!

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v1.5-02/2022