Regulus RBC 200HP User manual

STORAGE WATER HEATERS
WITH UPSIZED HEATING COIL
RBC 200HP, RBC 300HP, RBC 400HP,
RBC 500HP, RBC 750HP, RBC 1000HP
EN
v 1.0
Installation and Operation Instructions

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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 Packing ................................................................................................................................. 3
2 General Information ......................................................................................................................... 3
3 Technical Data and Dimensions of RBC HP Models .................................................................... 4
4 Operation .......................................................................................................................................... 5
5 Examples of Assigning Connection Points ................................................................................... 5
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 installation ................................................................................................ 8
6.6 Commissioning .................................................................................................................... 9
7 Tank‘s Insulation .............................................................................................................................. 9
8 Maintenance and magnesium anode rod replacement ............................................................... 10
9 Disposal ............................................................................................................................................ 10
10 Warranty ............................................................................................................................................ 10

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1 - Description
RBC HP Storage water heater (further “tank“) with one upsized enameled heating coil with a G 5/4” connection
(750 and 1000 liter tanks have a G 6/4” connection). These tanks (except for the 1000l model) facilitate
installation of an electric heating element into the G 6/4” sleeve.
These tanks with an upsized heating coil are especially suitable for use with a heat pump.
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
Six models of 200, 300, 400, 500, 750 and 1000 l capacity enabling installation of an electric heating rod 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 rod installed inside the tank (bigger
tanks are fitted with more anode rods). From 400 l upwards the tanks are fitted with 2 magnesium anode rods,
tanks of 750 and 1000 l volume 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 leatherette surface.
1.4 - Connection points on the tank
2× lateral with G 5/4“ inner thread, for the heating coil (750 and 1000l 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 400l tanks have
a G 1” thread)
2× lateral with G 1/2“ inner thread, for a temperature sensor and thermometer (RBC 1000 HP tank has one
extra sheath)
1× lateral with G 1“ inner thread, for circulation(200, 300 and 400l tanks have a G ¾” thread)
1× top with G 5/4“ inner thread, for a magnesium anode rod (750 and 1000l tanks have 2 upper anode rods)
1× lateral with G 6/4“ inner thread, for an el. heating rod (not in RBC 1000 HP)
1× flange 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 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 - Technical Data and Dimensions of a RBC
HP Storage Water Heater
Tank code ................................................................... a
Total tank volume ....................................................... b
Heating coil volume .................................................... c
Heating coil surface area ............................................ d
Empty weight (transport) ............................................ e
Max. working temperature - tank ............................... 95 °C
Max. working temperature - heating coil .................... 110 °C
Max. working pressure - tank ..................................... 10 bar
Max. working pressure - heating coil .......................... 16 bar
DHW heating ∆t=35 °C (80/60 - 10/45) - coil ............ f
ø114
ø168
„S
“
30°
Insulation
A
B
C
D
E
F
H
I
J
G 6/4“
G 5/4"
(G 1")
G 1/2“
G 1/2“
ø L
2
3
6
G
4
5
7
8
9
1
ø K
G 6/4“
G 6/4“
G 1" (G 3/4")
G 5/4" (G 1")
G 5/4“
„S“
Note: Values in brackets in the figure are valid for RBC200HP - RBC400HP tanks.

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* RBC1000HP tank has no G 6/4“ sleeve for a heating rod.
4 - Operation
This tank is designed for operation in closed pressure circuits. Hot water is heated in the tank via the
integrated heat exchanger (heating coil) from 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.
5 - Examples of Assigning Connection Points
Model RBC 200HP RBC 300HP RBC 400HP RBC 500HP RBC 750HP RBC 1000HP*
Tank code a 10534 10535 10536 8546 10537 7883
Tank volume [l] b 200 300 400 500 750 1000
Heating coil volume [l] c 13.5 23.1 30 36.3 46.2 63
Heating coil surface area [m
2
] d 3 3.8 5 5.9 7.5 10
Empty weight
(transport) [kg]
e 128 155 187 220 290 320
DHW heating ∆t=35 °C
(60/40 - 10/45) [l/h] ([kW])
f 934
(38)
1179
(48)
1572
(64)
1880
(75)
2334
(95)
3186
(127)
Dimensions [mm] A 1265 1710 1655 1785 1870 2120
B 1040 1430 1385 1475 1450 1730
C 940 1150 1165 1335 1300 -
D 257 270 280 360 400 400
E 67 67 79 175 220 220
F 210 230 250 295 370 345
G 890 1080 1100 1235 1250 1695
H 593 653 690 825 775 542 a 1193
I 990 1200 1205 1375 1440 1235
J 1164 1609 1541 1595 1590 1840
ø K 610 610 710 760 950 950
ø L 500 500 600 650 790 790
Conn.
point
Example I.
with a cascade of gas boilers
Example II.
with a solar system
Example III.
with a heat pump
1 magnesium anode rod magnesium anode rod magnesium anode rod
2 thermometer thermometer thermometer
3 plug plug electric heating rod
4 cold water inlet cold water inlet cold water inlet
5 outlet to a boiler outlet to a solar system outlet to a heat pump
6 inlet from a boiler inlet from a solar system inlet from a heat pump
7 temperature sensor, thermostat temperature sensor temperature sensor
8 recirculation plug recirculation
9 hot water outlet hot water outlet hot water outlet
flange blinded blinded blinded

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gas
boiler gas boiler
hot water
cold water
heating system
3-way
zone valve
recirculation
RBC HP E
hot water
cold water
3-way
zone valve
larger solar system
pool
backup heating
RBC HP
TSV TV
recirculation
E
B
T
E
Example I.
- with a cascade of gas boilers
Example II.
- with a solar system

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hot water
cold water
recirculation
EcoAir Heat Pump
3-way
zone valve accumulation
RBC HP E
Example III.
- with a heat pump
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 qualified staff. The tank shall be placed on the
floor, 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 heating coil. The heat source for the tank - an enameled
coil - connect with G 5/4” couplings.
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 G 5/4” upper sleeve and the lower outlet connects to the return piping
to the solar system. 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 (RBC 1000HP tank has no sleeve
for a 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 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. G 5/4” 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 200HP, 12 l volume for RBC 300HP and 400HP, 18 l for RBC 500HP,
24 l for RBC 750HP and 35 l for RBC 1000HP).
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 sufficient.
Please use a G 5/4” to G ½” reducing coupler when installing an electronic anode. 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.
Kit for RBC storage water heaters
Code Anode rod length [mm] For storage water heaters
9173 350 (200/150) RBC 200HP
9174 500 (350/150) RBC 300HP to RBC 500HP
9175 750 (550/200) RBC 750HP to RBC 1000HP

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6.6 - Commissioning
Fill the heating circuits with the appropriate fluids 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 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
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 hard polyurethane
foam with zipped PVC layer is used.
Warning
Insulation dismantling and installation shall be done in two or three persons. The hard-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 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 another 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.

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REGULUS spol. s r.o.
Do Koutů1897/3 http://www.regulus.eu
143 00 Praha 4 E-mail: [email protected]
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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 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 Certificate. A Warranty Certificate is an integral part of the supply. Tank transport or storing in
a horizontal position is considered a warranty violation!