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www.regulus.eu
NBC 170 HP
NBC 170 HP
Installation and Operation Manual
HOT WATER STORAGE TANK
NBC 170 HP
EN
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NBC 170 HP - 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 of NBC 170 HP .......................................................................... 4
4 Operation .......................................................................................................................................... 6
5 Examples of Assigning Connection Points ................................................................................... 6
6 Installation and Commissioning .................................................................................................... 7
7 Tank Insulation ................................................................................................................................. 8
8 Maintenance ..................................................................................................................................... 8
9 Disposal ............................................................................................................................................ 8
10 Warranty ........................................................................................................................................... 8
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NBC 170 HP - www.regulus.eu
1 - Description
NBC Hot Water Storage Tank with one stainless-steel heat exchanger, G 3/4“ connections (e.g. to connect
a heat pump).
For the correct functioning of the tank it is necessary to optimally design a hot water heating system including
a heat source, safety elements and shut-off valves in compliance with the respective standards and rules.
The hydraulic variant shall be selected respecting the heating controller used. For a connection example, see
Chapter 5 of this document.
1.1 - Models
One model of 162 l total capacity.
1.2 - Tank protection
The entire tank is made of stainless steel which guarantees a ling service life. Further qualitative improvement
is reached thanks to a magnesium anode rod installed inside the tank. The anode must be checked regularly at
intervals of up to 24 months and replaced in case of its loss. The service life of an anode rod depends on the
hardness and chemical composition of water to be heated. In cases of a higher water hardness or a higher water
consumption (processing facilities, hotels, hospitals, etc.), it is necessary to check magnesium anode rods every
4-8 months depending on the depletion detected, or use an electronic anode.
1.3 - Thermal insulation
Tanks are supplied with 50 mm thick EPU insulation, white surface.
1.4 - Connection points on the tank
2× top with G 3/4“ inner thread, for the heating coil
2× top with G 3/4“ inner thread, for cold water inlet and hot water outlet
1× top for temperature sensors, G 1/2”
1× top with G 3/4“ inner thread, for recirculation
1× top with G 3/4“ inner thread, for magnesium anode rod
1× lateral G 1/2“ with drain valve
1× lateral M8x25 earthing
1.5 - Packaging
Tanks are delivered standing, each screwed to its pallet, packed in bubble wrap.
2 - General Information
The appliance shall be installed by a qualied 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 prohibited and the manufacturer accepts no responsibility
for damage caused by improper or wrong use.
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NBC 170 HP - www.regulus.eu
3 -
Technical Data and Dimensions of TV NBC 170 HP
Regulus NBC 170 HP Hot Water Storage Tank
code: 17615
Dimensions
TAPPINGS
pos. connections height [mm]
DHW heating
W1
W2
W3
Heat source
X1
X2
Control & Safety
C1
Magnesium anode rod
A1
G 3/4" F 1060 mm
G 3/4" F 1060 mm
G 3/4" F 1060 mm
G 3/4" F 1060 mm
G 3/4" F 1060 mm
G 1/2" F 1060 mm
G 3/4" F 1060 mm
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NBC 170 HP - www.regulus.eu
Energy efficiency class
1075 mm
1233 mm
polyurethane (PU)
Dimensions, tipping height
500 mm
603 mm
95°C
7 bar
15 bar
Materials
stainless steel AISI 316L
stainless steel AISI 304
EPU (expanded polyurethane)
Technical Data
171 l
162 l
9 l
2 m
2
95°C
162 l
Energy Efficiency Data (as per EC Regulation No. 812/2013)
NBC 170 HP
B
42 W
Standing loss
Storage volume
Total tank volume
Fluid volume in tank
Fluid volume in heat exchanger
Heat exchanger surface area
Max. temperature in tank
Max. temperature in heat exchanger
Max. pressure in tank
Max. pressure in heat exchanger
Tank material
Heat exchanger material
Insulation material
Insulation outer surface
Tank diam.
Tank diam. with insulation
Total tank height
Tipping height
Empty weight 42 kg
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NBC 170 HP - www.regulus.eu
4 - Operation
The tank is designed for operation in pressure circuits. Hot water is heated in the tank via the integrated heat
exchanger (heating coil) from e.g. a heat pump.
Hot water temperature should be set to 55-60 °C. This temperature guarantees the best operation and at the
same time, it prevents formation of Legionella bacteria.
5 - Examples of Assigning Connection Points
CH HW Circ CW
NBC 170 HP
Table of limit values for total dissolved solids in hot water
Description pH Total dissolved
solids (TDS)
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
Ca Chlorides Mg Na Fe
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NBC 170 HP - www.regulus.eu
6 - Installation and Commissioning
Installation shall meet valid rules and may be done only by qualied 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 inlet and outlet of the heating coil. The heat source connects to the tank using G
3/4” ttings.
6.2 - Connection to water mains
DHW piping shall be made according to valid rules. G 3/4” ttings are used to connect the tank to a cold water
inlet and hot water outlet. A safety kit (code 17387) 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. An 8-liter expansion tank shall be installed at the cold water inlet.
Should the water be too hard, install a water softener before the tank. In case the water contains mechanical
impurities, install a strainer.
There is a drain valve at the lowest point of the tank.
Complete DHW piping shall be properly insulated.
6.3 - Tank earthing
Earth the tank before commissioning. The earthing bolt is at the same height as the drain valve (180mm from
the oor) and rotated 90 degrees counter-clockwise behind the drain valve.
Šroub nerez M8x25
M8x25 stainless steel bolt
Podložka nerez 8x24x2
8x24x2 stainless steel washer
50
Matice M8
M8 nut
+ trubka nerez Ø10x1,5
+ stainless steel pipe diam. 10x1.5
(matice plus trubka L=50 mm)
(nut+pipe =50mm long)
Vypouštěcí ventil
drain valve
earthing
Zemnění
6.4 - Electronic anode rod installation
Magnesium anode rod is factory installed in the tank. An electronic anode rod (code 13793) can be installed in
the tank instead of the magnesium one.
6.5 - Commissioning
Earth the tank before commissioning. The earthing screw is located at the marked place. Fill the entire
system with liquids and air-vent. Check all connections for leaks and a 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.
It is recommended to maintain the temperature of the hot water in the tank, e.g. by means of a heat pump, in the
temperature range of 48-52 °C. It is recommended to temporarily raise the temperature of the entire hot water
system to 65-70 °C as a protection against the formation of bacteria, especially Legionella. It is recommended
to carry out a temporary temperature increase whenever the hot water supply is shut down for a longer time.
Requirements for the quality and temperature of hot water can be set by a special regulation according to the
methods of hot water use (staff hygiene, hot water for hospitals, educational institutes, technological water,
etc.). Set the parameters of the respective controller according to the manufacturer‘s documentation and
recommendations. Check regularly that all control and adjustment elements are functioning properly.
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7 - Tank Insulation
Product description
Thermal insulation is a component of tanks that prevents heat losses. Thermal insulation of EPU with
polyurethane foil is used.
Warning
Do not use open re near the product.
8 - Maintenance
Clean the exterior of the tank with a wet cloth and a suitable detergent.
Never use abrasives, solvents, petroleum-based products, etc.
Check for water leaks at the tank connection points.
9 - 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.
10 - Warranty
This product is covered by warranty according to the conditions described in this Manual and according to the
Warranty Certicate. A Warranty Certicate is an integral part of the supply.
©2023 We reserve the right to errors, changes and improvements without prior notice.
REGULUS spol. s r.o.
E-mail: sales@regulus.eu
Web: www.regulus.eu
v1.2-07/2023
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