Regulus RBC 300 User manual

www.regulus.eu
RBC 200 - 3000
RBC 200 - 3000
EN
Installation and Operation Manual
HOT WATER STORAGE TANKS
RBC 200, RBC 300, RBC 400, RBC 500, RBC 750,
RBC 1000, RBC 1500, RBC 2000, RBC 2500 and RBC 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 Technical Data and Dimensions of RBC Models .......................................................................... 4
4 Operation .......................................................................................................................................... 5
5 Examples of Assigning Connection Points ................................................................................... 6
6 Installation and 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
RBC Hot Water Storage Tank (further “tank“) with one enameled heat exchanger with a G 5/4” connection (e.g.
for connecting a solar thermal system), enabling installation of an electric heating element and also another el.
heating element or a nned tube heat exchanger 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 214, 297, 408, 515, 767, 887, 1492, 2006, 2509 a 2841 l capacity enabling installation of an
electric heating element or another heat source.
1.2 - Tank protection
Enameled inner surface and coil guarantee 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 (even more
anode rods are installed in tank of a bigger volume). From RBC 400 upwards each tank has 2 anode rods.
The RBC 3000 tank has 3 anodes.
1.3 - Thermal insulation
RBC 200 to 500 tanks are supplied with a hard polyurethane insulation 55 mm thick with a white PVC surface.
RBC 750 and 1000 tanks are supplied with a hard polyurethane insulation 75 mm thick with a white PU leather
surface. RBC 1500, 2000, 2500 and 3000 tanks have the insulation 100 mm thick. The insulation can be de-
tached for easier handling.
1.4 - Connection points on the tank
2× lateral with G 5/4“ inner thread, to the heating coil
2× lateral with G 5/4“ inner thread (RBC 200, RBC 300 and RBC 400 with G 1“ inner thread, RBC 1500 - 3000
with G 2“ inner thread ) for cold water inlet and hot water outlet
2× lateral with G 1/2“ inner thread, for a temperature sensor and thermometer
1× lateral with G 1“ inner thread (RBC 200, RBC 300 and RBC 400 with G 3/4“ inner thread), for circulation
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× ange 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 qualied 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 care-
fully the instructions in this Manual as they contain important information concerning safety, installation, opera-
tion and maintenance. Keep this Manual for later reference.
Using the tank for other purposes than stated above is forbidden and the manufacturer accepts no responsibil-
ity for damage caused by improper or wrong use.

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V
Ø K
Ø L
3 - Technical Data and Dimensions
of RBC Models
Tank code ............................................................................................................... a
Tank total volume ................................................................................................... b
Heat exchanger volume ......................................................................................... c
Heat exchanger surface ......................................................................................... d
Empty weight (transport) ........................................................................................ e
Max. working temperature - tank ........................................................................... 95 °C
Max. working temperature - heat exchanger ........................................................ 110 °C
Max. working pressure - tank ................................................................................ 10 bar
Max. working pressure - heat exchanger ............................................................. 10 bar
DHW heating ∆t =35 °C (80/60 - 10/45) - coil ....................................................... f

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Model RBC200 RBC300 RBC400 RBC500 RBC750 RBC1000 RBC1500 RBC2000 RBC2500 RBC3000
Tank code a 3252 3253 6479 6480 4037 4038 16710 16711 12420 8477
Tank volume [l] b 214 297 408 515 767 887 1492 2006 2509 2841
Heat exchanger volume [l] c 10 11 12 15 19 19 26 29 30 32
Heat exchanger surface [m2] d 1.5 1.7 1.9 2.5 3.4 3.5 4.2 4.5 4,8 5.2
Empty weight [kg] e 82 109 131 163 240 262 282 359 393 446
DHW heating ∆t=35 °C
(80/60 - 10/45) [l/h] ([kW]) f1280 (51,9)
1450
(58,8)
1620
(65,8)
200
(84,7)
2780
(112,7)
2860
(116)
3360
(136,2)
4182
(146)
4242
(149)
4328
(152)
Dimensions [mm] V 1265 1710 1655 1785 1870 2120 2285 2550 2680 2980
ø K 610 610 710 760 950 950 1200 1300 1400 1400
ø L 500 500 600 650 790 790 1000 1100 1200 1200
Tipping height mm 1410 1820 1810 1950 2100 2330 2590 2870 3030 3300
Magnesium anode rod
G5/4“
Code
A1 4025 448 4025 4025 464 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
4 - Operation
This tank is designed for operation in closed pressure circuits. Hot water is heated in the integrated hot-water
heat exchanger inside the tank by several possible heat sources like various kinds of heating boilers, renew-
able energy sources (heat pumps, solar collectors). An electric heating element can be installed into the tank
for DHW auxiliary 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
RBC200 RBC300 RBC400 RBC500 RBC750 RBC1000 RBC1500 RBC2000 RBC2500 RBC3000
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 1609 G 1“ F 1541 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 915 G 3/4“ F 1140 G 3/4“ F 1204 G 1“ F 1315 G 1“ F 1350 G 1“ F 1545 G 1“ F 1460 G 1“ F 1650 G 1“ F 1740 G 1“ F 2040
El. heating elements
E1 G 6/4“ F 797 G 6/4“ F 986 G 6/4“ F 980 G 6/4“ F 1150 G 6/4“ F 1050 G 6/4“ F 1050 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 593 G 1/2“ F 653 G 1/2“ F 689 G 1/2“ F 825 G 1/2“ F 775 G 1/2“ F 870 G 1/2“ F 943 G 1/2“ F 985 G 1/2“ F 1075 G 1/2“ F 1075
TG 1/2“ F 997 G 1/2“ F 1431 G 1/2“ F 1385 G 1/2“ F 1400 G 1/2“ F 1430 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
X1 G 5/4“ F 263 G 5/4“ F 263 G 5/4“ F 314 G 5/4“ F 320 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
X2 G 5/4“ F 758 G 5/4“ F 848 G 5/4“ F 874 G 5/4“ F 1075 G 5/4“ F 970 G 5/4“ F 970 G 5/4“ F 1180 G 5/4“ F 1160 G 5/4“ F 1250 G 5/4“ F 1300
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 1790 G 5/4“ F 2045 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 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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Example II.
Enlarged solar heat transfer surface area.
DHW
cold water
RBC
3-way z.v
recirculation
A larger solar surface - enlarged
heat transfer surface area
Pool
E
E
T
bbbbb
B
bbb
Example I.
With a gas boiler.
DHW
cold water
RBC
heating system
3-way z.v.
recirculation
E
gas
boiler
Conn.
point
Example I.
with a gas boiler
Example II.
enlarged solar heat exchange
surface
Example III.
with a heat pump
Example IV.
with el. backup heating
A1 magnesium anode magnesium anode magnesium anode magnesium anode
T thermometer thermometer thermometer thermometer
E1 plug electric heating element electric heating rod electric heating element
W1 cold water inlet cold water inlet cold water inlet cold water inlet
X1 outlet to boiler outlet into a solar thermal system outlet into a heat pump outlet into a solar thermal system
X2 inlet from boiler inlet from a solar thermal system inlet from a heat pump inlet from a solar thermal system
C1 temperature sensor,
thermostat temperature sensor temperature sensor temperature sensor
W3 circulation circulation circulation circulation
W2 hot water outlet hot water outlet hot water outlet hot water outlet
L1 - ange plugged additional solar heat exchanger solar heat exchanger el. heating element
Connections depend on the circuit to be connected, the a.m. examples are informative only.
5 - Examples of Assigning Connection Points

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Example III.
With a heat pump.
RBC
3-way z.v. accumulation
EcoAir
HEA
T PUMP
E
T
bbbbb
B
bbb
E
DHW
cold water
recirculation
Example IV.
With auxiliary el. heating.
RBC
Increased el. heat output
to cover peak demand
in DHW
E
bbb
bbbbb
B
T
E
DHW
cold water
recirculation
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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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.
Defects caused by improper installation, use or handling are not covered by warranty.
6.1 - Connection to heat sources
Connect heating circuits to the inlets to and outlets from heating coils. The heat source for the tank - an
enameled coil - connects with G 5/4” couplings.
6.2 - Connection to a solar thermal system
The tank can be used with a solar thermal system. In such a case, the inlet for hot heat-carrying liquid coming
from the solar thermal system shall be connected to the upper sleeve of the heating coil (G 5/4”) and the lower
outlet 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 sleeve is designed to accommodate an electric heating element. 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.Threaded couplers are used to connect the tank to a cold
water inlet and hot water outlet. 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 RBC 200, 12 l volume for RBC 300 and 400, 18 l volume for RBC 500, 24 l volume for
RBC 750, 35 l volume for RBC 1000, 60 l volume for RBC 1500, 80 l volume for RBC 2000, 100 l volume for
RBC 2500 and 2×60 l volume for RBC 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 can be used instead of the magnesium one. Its principle advantage is that its
proper function is signaled by a control lamp while a magnesium anode rod needs to be taken out for check. In
such a case, just visual check of the electronic anode 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.

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Electronic Anode Kits for RBC 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.
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 insula-
tion 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.
For tanks El. Anode
Kit code -
replacement
Anode rod length El. Anode Kit
code w. lower
ange*
Anode rod length
RBC 200 9173 350 (200/150) - -
RBC 300 9174 500 (350/150) - -
RBC 400, RBC 500 17368 500 (350/150) + 350 (200/150) 17432 500 (350/150) + 350 (200/150)
RBC 750, RBC 1000 17369 600 (350/250) + 450 (200/250) 17433 600 (350/250) + 450 (200/250)
RBC 1500, RBC 2000,
RBC 2500 14429 800 (550/250) + 600 (350/250) 17435 800 (550/250) + 600 (350/250)
RBC 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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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 commis-
sioning. 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 elec-
tronic 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. Insu-
lation 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 hori-
zontal position is considered a warranty violation!