Regulus RGC 120H User manual

www.regulus.eu
RGC 120H
RGC 120H
EN
Installation and Operation Manual
HOT WATER STORAGE TANK
RGC 120H

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RGC 120H - 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 Packaging ......................................................................................................................... 3
2 General Information ........................................................................................................................ 3
3 Technical Data and Dimensions .................................................................................................... 4
4 Operation ......................................................................................................................................... 6
5 Example of Assigning Connection Points .................................................................................... 6
6 Installation and Commissioning .................................................................................................... 7
6.1 Connection to heat sources .............................................................................................. 7
6.2 Heating element installation .............................................................................................. 7
6.3 Connection to water mains ............................................................................................... 7
6.4 Electronic anode rod installation ....................................................................................... 7
6.5 Commissioning ................................................................................................................. 7
7 Maintenance, Replacement of Magnesium Anode Bar ............................................................... 8
8 Disposal ........................................................................................................................................... 8
9 Warranty .......................................................................................................................................... 8

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RGC 120H - www.regulus.eu
1 - Description
RGC 120H Hot Water Storage Tank (further “tank“) with one enamelled heat exchanger (e.g. for connecting a
gas boiler), permitting installation of an electric heating element.
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 heat sources and heating circuits, valves, non-return valves etc.
1.1 - Models
The tank is available in volume of 120 l.
1.2 - The tank is available in volume of 120 l.
Enamelled inner surface and coil heat exchanger 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.
1.3 - Thermal insulation
The tanks come in an ecologic polyurethane foam insulation 30 mm thick with a metal mantle, white painted.
1.4 - Connection points on the tank - all are located on the top
2 tappings with G 3/4“ M, to heat exchanger circuit
2 tappings with G 3/4“ M, for cold water inlet and hot water outlet
1 tapping with G 3/8“ M, for temperature sensor (thermometer capillary inserted)
1 tapping with G 3/4“ M for recirculation
1 tapping with G 5/4“ F, for a magnesium anode rod
1 tapping with G 6/4“ M, for an el. heating element
1.5 - Packaging
Tanks are delivered standing, each screwed to its pallet, packed in a cardboard box. 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 Manual.
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 responsibi-
lity for damage caused by improper or wrong use.

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RGC 120H - www.regulus.eu
3 - Technical Data and Dimensions
RGC 120 H
Dimensions
TAPPINGS
pos.
connection height [mm]
DHW heating
W1 G 3/4" M 1140
W2 G 3/4" M 1140
W3 G 3/4" M 1140
El. heating elements
E1 G 6/4" M 220
Control and safety
C1 G 3/4" M 100
TG 1/2" F 1115
Solar thermal system
X1 G 3/4" M 1140
X2
G 3/4" M 1140
Anode rod
A1 G 5/4" F 1090
Tipping height 1205 mm.
Heat exchanger pressure drop

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RGC 120H - www.regulus.eu
Application
Description
Working fluid
Code
Energy Efficiency Data (as per EC Regulation No. 813/2013)
Energy efficiency class
Standing loss
Storage volume
Total volume
Heat exchanger volume
Max. working pressure in tank
Max. working pressure in HE
Max. temperature in tank
Max. temperature in HE
Heat exchanger surface area
Ambient temperature
Max. relative humidity
Heat exchanger
Tank height
Tank diameter
Tank dimensions w. insulation
Tipping height
Empty weight
Tank
Heat exchanger
Outer mantle
Insulation
El. heating element
Heating elem. max. length / output
Electronic anode rod
Magnesium anode rod, l = 500 mm
383 mm / 4,5 kW
code 9 176
Spare parts
code 448
models ETT-A, D, F, G, M
1140 mm
Ø 400 mm
□ 460 mm
1205 mm
62 kg
Materials
S235JR, inner side enamelled
S235JR+N, outer surface enamel
S235JR, outer surface coated
PU foam
Accessories
Dimensions, weight
6 l
6 bar
10 bar
100 °C
100 °C
1.2 sqm
Ambient conditions
2 to 45 °C
80%
Hot water heating from 10 to 45°C at heating water temp. of 60°C
1020 l/h (41,5 kW)
120 l
RGC 120 H
Main features
water heating through heat
exchanger and by el. heating elem.
(optional)
inner surface and heat exchanger
enamelled, tank is insulated
water (tank), water, water/glycol
mixture (max. 1:1) or water-glycerine
mixture (max. 2:1) (heat exchanger)
10 493
RGC 120 H
C
69 W
114 l
Technical data
Ø

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RGC 120H - www.regulus.eu
4 - Operation
This tank is designed for operation in closed pressure circuits. Hot water is heated in the integrated hot-water
heat exchangers (heating coils) inside the tank from several possible heat sources like various kinds of hea-
ting boilers, renewable energy sources (heat pumps). 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.
5 - Examples of Assigning Connection Points
Example:
with a gas boiler
Tapping Example:
with a gas boiler
A1 - upper ange, G 5/4“ magnesium anode rod
T- thermometer, G 1/2“ thermometer
E1 - G 6/4“ plug
W2 - 4 cold water inlet
X1 - 5 outlet to boiler
X2 - 1 inlet from boiler
W3 - 3 recirculation
W1 - 2 hot water outlet
C1 - G 3/4“ plug
Connections depend on the circuits to be connected, the a.m. examples are informative only.
TV
SV
RGC 120H
topný systém
3c.ZV
CV
E
plynový
kotel
12345
Table of limit values for total dissolved solids in hot water
HOT WATER
RECIRCULATION
COLD WATER
heating system
gas boiler
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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RGC 120H - 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 inlets to and outlets from the heat exchanger with G 5/4” couplers.
6.2 - Connection to a solar thermal system
The G 6/4“ side tapping is designed to accommodate an electric heating element. The hot water storage tank
can be equipped with an el. heating element depending on the tank diameter and the heating element length. It
can be controlled either directly (thermostat-equipped elements), or by a heating system controller.
Warning: All electric heating elements shall be protected by a safety thermostat.
The installation may be done by qualied staff only.
6.3 - Connection to water mains
DHW piping shall be done according to valid rules. G 3/4” 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 o fat least 5 l volume should be installed
at the cold water inlet as well.
DHW piping shall be done according to valid rules. G 3/4” 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 o fat least 5 l volume should be installed
at the cold water inlet as well.
6.4 - Electronic anode rod installation
A so called electronic anode rod can be used instead of the magnesium one. Its principle advantage is that it
does not need to be taken out for check. Just a visual check of the electronic anode is sufficient.
Kit for RGC 120H hot water storage tanks
Should an electronic anode rod or an el. heating element be installed, it is necessary to make a connection
between the metal tank casing and the PE line.
6.5 - Commissioning
Fill the heating circuits with the appropriate fluids and air-bleed the entire system.
Fill the tank with cold water, following this procedure:
- open the shut-off valve at the tank inlet
- open a hot water tap, as soon as water starts flowing out, tank filling is finished, close the tap
- check all connections for leaks, check 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 6 of this Manual.
Set the heating controller in compliance with the documentation and manufacturer’s recommendations. Check
regularly a proper function of all control and adjusting elements.
Code El. anode rod length [mm] For hot water storage tanks
9176 600 (350/250) RGC 120H

©2019 We reserve the right to errors, changes and improvements without prior notice.
REGULUS spol. s r.o.
E-mail: [email protected]
Web: www.regulus.eu
v1.3-08/2018
7 - 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 tank connections for leaks.
The tanks are equipped with an anti-corrosion sacrice magnesium anode rod. The anode rod shall be chec-
ked 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 rod
every 6 months. If more than 1/3 of its total volume is consumed, the anode rod shall be replaced with a new
one. Disregarded of its state, the magnesium anode rod (code 448) shall be replaced with a new one within
18 months from commissioning. In case an electronic anode rod is used, the above described procedures are
not necessary. Then only a visual check of its indication lamp is necessary every 3 months. The indication of
proper working of the electronic anode rod is described in its Manual.
If damage to a tank occurs due to neglected replacement of a magnesium anode rod or a non-working electro-
nic anode rod, the warranty cannot be claimed.
8 - Disposal
Packaging 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 Centre.
Insulation shall be recycled as plastic and the steel vessel as scrap iron.
9 - 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 warranty violation!