Regulus HSK 350 K P-B User manual

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HSK 350 K P-B
HSK 350 K P-B
EN
Installation and Operation Manual
THERMAL STORE
with stainless-steel DHW heat exchanger
HSK 350 K P-B

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CONTENTS
1 Description ..................................................................................................................................................... 3
1.1 Models ............................................................................................................................................... 3
1.2 Tank protection ................................................................................................................................... 3
1.3 Thermal insulation .............................................................................................................................. 3
1.4 Packaging .......................................................................................................................................... 3
2 General Information ...................................................................................................................................... 3
3 Technical Data and Dimensions of HSK 350 K P-B Thermal Store .......................................................... 4
4 Operation ....................................................................................................................................................... 5
5 Connection of HSK 350 K P-B to a Heating System ................................................................................. 6
6 Installation and Commissioning .................................................................................................................. 7
6.1 Connection to heat sources ............................................................................................................... 7
6.2 Connection to water mains ................................................................................................................ 7
6.3 Commissioning .................................................................................................................................. 7
7 Installing Insulation on the Tank ................................................................................................................. 7
8 Maintenance .................................................................................................................................................. 8
9 Disposal ......................................................................................................................................................... 8
10 Warranty .......................................................................................................................................................... 8

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1 - Description
The HSK 350 K P-B Combination Thermal Store with an integrated stainless-steel heat exchanger and a tight separating
metal plate is intended for storing heat and heating of domestic hot water. Thanks to the modified construction and the
tight separating plate, it is sufficient to use only one zone valve for switching between heating the upper and lower part
of the tank. The tank is suitable for installations with heat pumps and a RegulusBOX indoor unit.
1.1 - Models
One model of 340 l total volume with stainless-steel DHW heat exchanger.
1.2 - Tank protection
The thermal store has no inner surface finish, the outer surface is painted in gray. The DHW heat exchanger is made of
stainless steel.
1.3 - Thermal insulation
Thermal insulation is available as a separate item. For easier handling, the insulation shall not be fitted on the tank until it
reaches its definite place of installation. The insulation is made of fleece, 100 mm thick, with a hard polystyrene surface.
1.4 - Packaging
Thermal stores are delivered standing, each screwed to its pallet, packed in bubble wrap
It is forbidden to transport and/or store the thermal stores in a horizontal position.
2 - General Information
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.
This appliance is designed to accumulate thermal energy and distribute it subsequently. It must be connected to
a heating system and heat sources. This appliance is suitable for continuous heating of domestic hot water.
Using the thermal store for other purposes than above described is forbidden and the manufacturer accepts no
responsibility for damage caused by improper or wrong use or filling procedure.
The appliance shall be installed by a qualified person according to valid rules, otherwise the warranty becomes null and
void.

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3 - Technical Data and Dimensions of HSK 350 K P-B Thermal Store
Technical Data
Total tank volume 340 l
Fluid volume in tank 319 l
DHW heat exchanger volume 21 l
DHW heat exchanger surface area 6 m2
Max. temperature in tank 95 °C
Max. temperature in DHW heat exchanger 95 °C
Max. pressure in tank 4 bar
Max. pressure in DHW heat exchanger 10 bar
Tank diameter 550 mm
Tank diameter with insulation 750 mm
Tank overall height 1655 mm
Tank perimeter insulation thickness 100 mm
Bottom insulation thickness 50 mm
Top insulation thickness 120 mm
Tipping height 1740 mm
Empty weight without insulation 82 kg
Materials
Tank material S235JR
DHW heat exchanger material AISI 316L
Tank insulation material eece and polystyrene
Outer surface of the insulation rigid polystyrene
Main Features
Application
Combination thermal store with integrated stainless-steel heat
exchanger and a tight separating metal sheet is intended for
heat accumulation and DHW heating. Thanks to its modied
design and the tight separating metal sheet, just one zone
valve is su󰀩cient for switching between heating the upper
and lower tank sections. The tank is suitable for installations
with heat pumps and RegulusBOX indoor unit. The tank
insulation is not included in supply and shall be ordered
separately, see the code below.
Working uid water; water/glycol mixture (max. 1:1) or water-glycerine
mixture (max. 2:1) (tank); water (heat exchanger)
Tank Code 18628
Insulation Code 18837
Energy E󰀩ciency Data (as per EC Regulation No. 812/2013)
Energy E󰀩ciency Cla C
Standing loss 74 W
Storage volume 340 l
Volume of supplied DHW (heated from 10°C to 40°C)
Heated volume entire entire above separating metal plate
Backup heating 10 kW none 10 kW
Flow rate [l/min] 8 12 20 812 20 812 20
Temperature in tank 60 °C 60 °C 60 °C
Hot water volume [l] 287 261 218 229 211 174 273 248 210
Temperature in tank 50 °C 50 °C 50 °C
Hot water volume [l] 207 165 132 165 135 111 197 159 127

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4 - Operation
This tank is designed for storing heating water in closed pressure circuits with forced circulation. The stored heating
water transfers its heat to domestic hot water via the integrated heat exchanger. Hot water is thus heated in a continuous
manner.
The tank is suitable for installations with heat pumps and a RegulusBOX indoor unit.
Dimensions
pos. description connection height [mm]
Heat sources
B1 Incoming from heat source G 1“ F 1390
B2 Return to heat source G 1“ F 1630
B3 Incoming from heat source G 1“ F 1170
Heating system
H1 Flow to heating system G 1“ F 1530
H2 Return from heating system G 1“ F 1210
DHW heating
W1 Cold water G 1“ F 1725
W2 Return from heating system G 1“ F 1775
Control and safety
C1 Temperature sensor G 1/2“ F 1500
C2 Temperature sensor G 1/2“ F 1940
T2Thermometer G 1/2“ F 1380
P2Safety valve G 1/2“ F 1210
Others
O2Air release G 1/2“ F 1655

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5 - Connection of HSK 350 K P-B to a Heating System
KEY 1 Regulus heat pump (RTC, CTC) 2 heating system expansion vessel 3 HSK 350 K P-B thermal store 4 HV 60/125-2 manifold/collector 5 pump station for heating circuit 2 – CSE2 MIX 6 pump station for heating circuit 1 – CSE2 7 pump station for DHW recirculation – CSE TVMIX ZV 8 safety kit for HW storage tank 9 DHW expansion vessel 10 RegulusBOX indoor unit 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
BRAIDED HOSE
COMPENSATOR

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6 - Installation and Commissioning
Installation must meet valid rules and may be done only by qualified staff.
Defects caused by improper installation, use or handling are not covered by warranty.
After the tank is installed and connected to an existing heating system, it is recommended to clean the entire heating
system using a suitable cleaning agent, e.g. MR-501/R.
Anti-corrosion protective liquid should be also used, e.g. MR-501/F.
6.1 - Connection to heat sources
Place the tank on the floor and level it. Fit the insulation, see Installing Insulation on the Tank. Connect the heating system
according to the diagram of recommended connection - see Chap. 5. Install a drain valve at the lowest point of the tank.
Install an air vent valve at the highest point of the system. Insulate all the connection piping.
6.2 - Connection to water mains
DHW piping shall be done according to valid rules. The connections to the tank including the location of components is
shown in the recommended connection diagram in chapter 5. Installation of a pressure reducing valve on the tank inlet is
recommended. For water mains pressure above 6 bar a pressure reducing valve is necessary. To prevent water loss, we
recommend installing an expansion vessel at the cold water inlet with a minimum volume of 4% of the total volume of water
in the DHW piping, including heat exchangers, circulation pipes, etc. (usually 8 l). Should the water be too hard, install a
water softener before the tank. In case the water contains mechanical impurities, install a filter.
6.3 - Commissioning
The tank shall be filled up together with the heating system, respecting valid standards and rules. In order to minimize
corrosion, special additives for heating systems should be used. The quality of heating water depends on the quality of
filling water at commissioning, on the top-up water and on the frequency of topping up. This has a strong influence on the
lifetime of heating systems. Poor quality of heating water may cause problems like corrosion or incrustation, esp. on heat
transfer surfaces.
Quality of DHW shall meet the conditions shown in the Table of limit values for total dissolved solids in hot water
on this page.
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 the proper function of all control and adjustment elements.
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
7 - Installing Insulation on the Tank
Product description
Thermal insulation is a part of thermal stores, preventing heat loss. For easier handling, the insulation shall not be fitted
on the tank until it reaches its definite place of installation.
Warning
Insulation installation shall be done in two persons. Do not use any tools for installation. Keep away from open fire.
Installing Insulation
1. Fix the tank following installation instructions.
2. Wrap the insulation around the tank carefully. Check that the insulation adheres to its body perfectly. This can be
reached by rubbing and patting the insulation by hand from its center evenly in both directions until the insulation
adheres to the tank’s surface completely and no bubbles are left.
3. Use the holes for connections as a rest during the insulation installation.
4. At least one person presses the insulation to the tank, pulling both ends together. The other person closes the
insulation lock from the side.
5. Put on the upper insulation and cover.
6. Push on the covering plastic rosettes depending on the size of connections.
7. Finish the tank installation in compliance with the respective instructions and valid standards and rules.
Warranty on insulation
□ Warranty shall become null and void if:
○ the procedure described in the Installation Manual was not respected
○ the product was used for other purposes than intended.
□ Warranty does not cover:
○ usual wear and tear,
○ damage caused by fire, water, electricity or a natural disaster,

©2021 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
v1.0-01/2022
○ 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.
8 - Maintenance
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.
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 Center. Insulation shall be
recycled as plastic and the steel vessel as scrap iron.
10 - Warranty
This product is covered by warranty under conditions specified in this Manual and the respective Warranty Certificate.
The Warranty Certificate is an integral part of supply of this Thermal Store.