Centrometal CAS 303 Water Accumulation Tank Instruction Manual

TECHNICAL INSTRUCTIONS
for installation, use and maintenance of the water accumulation tank

CAS 303 – 5003 CAS-S / B / BS 503 – 2003
TU-CAS3-3-2023-HR-SLO-ENG-DE-CZ-FR

PRESENTATION

Water accumulation tanks CAS, CAS-S, CAS-B and CAS-BS are manufactured with the most modern welding technology, made from high quality steel. They are made in several different volumes (325, 465, 727, 920, 1426, 2122, 2960,3820 and 5022 litres) and four different versions: water accumulation tank (CAS), with inbuilt tube heat exchanger for solar collector connection (CAS-S), with inbuilt stainless steel domestic hot water (DHW) tank (CAS-B), and with inbuilt stainless steel DHW tank and tube heat exchanger (CAS-BS). We highly recommend You to follow our technical manual with attention which brighten the construction, operation, installation and maintenance of the water accumulation tank in order to assure a long life and proper operation condition of the product.

USE

Accumulation tanks CAS, CAS-S, CAS-B and CAS-BS are intended for accumulation of energy (for example in the central heating systems with solid fuel boilers for accumulation of thermal energy) and provide more economical and efficient operation of the system in which they are installed. Lot of versions of the water accumulation enables simultaneously use of more renewable energy sources what makes them ecologically and energetic very acceptable.

STATUS AT DELIVERY

For easier transport and positioning into boiler room, accumulation tanks CAS, CAS-S, CAS-B and CAS-BS are not supplied with built-in thermal insulation but separately as follows: – the body of the accumulation tank on a wooden pallet (the body of the accumulation tank 3003, 4003 and 5003 does not come on a wooden pallet) – thermal insulation packed in a protective PVC foil, rossete packed in PVC bag

ADDITIONAL EQUIPMENT

Accumulation tanks CAS, CAS-S, CAS-B and CAS-BS factory comes with installed connections for thermometers:

• thermometer (max. 4 by tank)

CAS AND CAS-S

• – Connection 6/4″ (CAS 303 – 2003), 2″ (CAS 3003 – 4003), 2 1/2″ (CAS 5003) (female thread)
• – Connection 6/4″ (CAS-S 503 – 2003) (female thread)

Type: CAS| 303| 503| 803| 1003| 1503| 2003| 3003| 4003| 5003
---|---|---|---|---|---|---|---|---|---
Volume (I)| 325| 465| 727| 920| 1426| 2122| 2960| 3820| 5022
Tank body diameter A (mm)| 500| 650| 790| 790| 1000| 1200| 1250| 1400| 1600
Outer diameter (with insulation) B (mm)| 700| 850| 990| 990| 1200| 1400| 1450| 1600| 1800
Total height C (mm)| 1805| 1600| 1690| 2100| 2050| 2140| 2660| 2765| 2815
Connections * (Rp)| 6/4″| 6/4″| 6/4″| 6/4″| 6/4″| 6/4″| 2″| 2″| 2 1/2″
Maximum operating pressure (bar)| 3| 3| 3| 3| 3| 3| 3| 3| 3
Maximum operating temperature (°C)| 100| 100| 100| 100| 100| 100| 100| 100| 100
Minimal height of the room (mm)| 2010| 1800| 1890| 2300| 2250| 2435| 2895| 3015| 3000
Empty accumulation body weight (kg)| 60| 75| 100| 115| 185| 265| 320| 380| 445
Empty acc. tank weight (with insulation) (kg)| 65| 85| 110| 130| 200| 285| 345| 410| 480
DHW tank capacity (I)| –| –| –| –| –| –| –| –| –
Max. operating pressure DHW tank (bar)| –| –| –| –| –| –| –| –| –
DHW connections (Rp)| –| –| –| –| –| –| –| –| –
Heat exchanger surface (m2)| –| –| –| –| –| –| –| –| –
Heat exchanger volume (I)| –| –| –| –| –| –| –| –| –
Thermal insulation (mm)| 100| 100| 100| 100| 100| 100| 100| 100| 100
Height D (mm)| 200| 230| 320| 320| 320| 365| 380| 445| 475
Height E (mm)| 670| 610| 670| 800| 785| 830| 1010| 1075| 1090
Height F (mm)| 1115| 995| 1015| 1290| 1255| 1300| 1635| 1690| 1705
Height G (mm)| 1585| 1375| 1365| 1770| 1720| 1765| 2265| 2320| 2320
Type: CAS-S| 503| 803| 1003| 1503| 2003
---|---|---|---|---|---
Volume (I)| 465| 727| 920| 1420| 2110
Tank body diameter A (mm)| 650| 790| 790| 1000| 1200
Outer diameter (with insulation) B (mm)| 850| 990| 990| 1200| 1400
Total height C (mm)| 1600| 1690| 2100| 2050| 2140
Connections ” (Rp)| 6/4″| 6/4″| 6/4″| 6/4″| 6/4″
Maximum operating pressure (bar)| 3| 3| 3| 3| 3
Maximum operating temperature (°C)| 100| 100| 100| 100| 100
Minimal height of the room (mm)| 1800| 1890| 2300| 2250| 2430
Empty accumulation body weight (kg)| 100| 135| 155| 245| 330
Empty acc. tank weight (with insulation) (kg)| 110| 145| 170| 260| 350
DHW tank capacity (I)| –| –| –| –| –
Max. operating pressure DHW tank (bar)| –| –| –| –| –
DHW connections (Rp)| –| –| –| –| –
Heat exchanger surface (m2)| 1,33| 2,29| 2,57| 3,65| 4,47
Heat exchanger volume (I)| 8,07| 13,95| 15,7| 22,32| 27,43
Thermal insulation (mm)| 100| 100| 100| 100| 100
Height D (mm)| 230| 320| 320| 320| 365
Height E (mm)| 610| 670| 800| 785| 830
Height F (mm)| 995| 1015| 1290| 1255| 1300
Height G (mm)| 1375| 1365| 1770| 1720| 1765
Height H (mm)| 280| 370| 370| 420| 465
Height I (mm)| 680| 920| 1020| 1120| 1165

CAS-B AND CAS-BS

• – Connection 6/4″ (CAS-B 503 – 2003) (female thread)
• – Connection 6/4″ (CAS-BS 503 – 2003) (female thread)

SENSOR INSTALLATION

Insert the temperature sensor(s) under the sensor holder at the height where you want the sensor measure the accumulation tank temperature.

FLOW RESISTANCE OF CAS, CAS-S, CAS-B, CAS-BS

INSTALLATION

Accumulation tanks CAS, CAS-S, CAS-B and CAS-BS are delivered on a wooden pallet. Before placing the accumulation tank in the boiler room it needs to be removed from the wooden pallet. Installation and assembly of accumulation tank and installation of additional equipment on the tank
must be performed by a qualified person. Accumulation tank need to be placed on a horizontal solid foundation for the anticipated load that causes the full weight of the accumulation tank. Boiler room must be protected from freezing. Accumulation tank has to be positioned so that it can be properly connected and simultaneously, enabling tending of accumulation tank control during operation. For mounting of thermal insulation on the accumulation tank see ”Technical instructions for installation of thermal insulation and jacket for accumulation tank CAS, -S, -B, -BS” which are delivered with thermal insulation of the tank.

LABEL WITH BASIC INFORMATION ABOUT THE PRODUCT

Figure 2. Position of the label on the accumulation tank

The accumulation tank label is in the plastic bag along with the technical documentation. The label must be placed to the bottom of the accumulation tank body during the mounting the thermal insulation (see Figure 2).

INSTALLATION OF THE ACCUMULATION TANK TO CENTRAL HEATING SYSTEM
Connection of the accumulation tank to central heating system should be done by recommendation and schematic drawing from boiler (heat source) manufacturer, according to this technical manual and good technical practice.

CONNECTION OF THE ACCUMULATION TANK CAS-B AND CAS-BS TO WATER SUPPLY

INSTALLATION

Connection of stainless steel domestic hot water (DHW) tank positioned in the accumulation tank CAS-B / CAS-BS to water supply installation has to be done by an expert professional and all installation works have to be performed in accordance with available technical standards (Scheme 1.). Cold sanitary water supply line has to be connected to connection (9) (Scheme 1.) (connection 3/4”) and the connection (7) (Scheme 1) (connection 3/4”) is intended for disposal of hot sanitary water. Connection for circulation line (8) (connection 3/4”) is located on the right side of the cold water connection.
The following has to be installed at the entry of supply line of cold sanitary water in DHW tank:

• expansion vessel for sanitary water;
• safety valve with opening pressure of 6 bar;
• reducing valve which reduces cold sanitary water pressure to 4 bar (if its pressure is higher);
• non-return valve.

Scheme 1. Example of installation accumulation tank CAS-BS to water supply system

1 – Accumulation tank CAS-B/CAS-BS
2 – Expansion vessel for sanitary water
3 – Safety valve with opening pressure 6 bar
4 – Non-return valve

• 5 – Pressure reducing valve
  6 – Stop valve| 7 – Hot sanitary water
  8 – Circulation
  9 – Cold sanitary water
  ** 10 – Thermal 3-way mixing valve for sanitary water
  11 – Sensor tube
  12 – Connection 6/4″ (female thread)
  ---|---

• It should be built in if inlet water pressure is over 4 bars.
  ** recommendation

START UP

START UP – CAS 303, CAS / -S 503, CAS / -S 803, CAS / -S 1003, CAS / -S 1503, CAS / -S 2003, CAS 3003, CAS 4003, CAS 5003
It is necessary to perform (check, if you have already performed) all actions in accordance with points 1.0. to 9.0. these instructions.
Max. working pressure in the accumulation tank connected to the installation of central heating must be
limited with built in safety valve with max. openning pressure 3 bar.

START UP – CAS-B / -BS 503, CAS-B / -BS 803, CAS-B / -BS 1003, CAS-B / -BS 1503, CAS-B / -BS 2003
It is necessary to perform (check, if you have already performed) all actions in accordance with points 1.0. to 9.0. these instructions.
Max. working pressure in the accumulation tank connected to the installation of central heating must be limited with built in safety valve with max. openning pressure 3 bar. Max. working pressure in the stainless steel DHW water tank connected to water supply system must be limited with built in safety valve with max. openning pressure 6 bar.
Before filling the tank CAS-B and CAS-BS with boiler water (heating system side), you must fill sanitary water heater tank DHW on pressure min. 1,5 bar.

USE, CLEANING AND MAINTENANCE

The water accumulation tank CAS, CAS-S, CAS-B and CAS-BS have to be cleaned as needed, by discharge the accumulation tank. Before filling the tank CAS-B and CAS-BS with boiler water (heating system side), you must fill sanitary water heater tank on pressure min. 1,5 bar. Min. pressure of 1,5 bar inside the sanitary water heater tank should be kept during the usual work.

CHARACTERISTICS OF ACC. TANKS CAS, CAS-S, CAS-B AND CAS-BS

They are manufactured from certificated steel sheet in compliance with the ISO 9001/2015 norm.
They are very good thermal insulated (100 mm), the outer cover is made of artificial leather.
It is possible to connect the tanks mutually in order to increase total accumulation of the system.
They are produced in several different volumes and four versions:

• water accumulation tank – CAS
• CAS 303 (325 lit.), CAS 503 (465 lit.), CAS 803 (727 lit.), CAS 1003 (920 lit.), CAS 1503 (1426 lit.), CAS 2003 (2122 lit.), CAS 3003 (2960 lit.), CAS 4003 (3820 lit.), CAS 5003 (5022 lit.)
• water accumulation tank with inbuilt solar tube heat exchanger – CAS-S
• CAS-S 503 (465 lit.), CAS-S 803 (727 lit.), CAS-S 1003 (920 lit.), CAS-S 1503 (1420 lit.), CAS-S 2003 (2110 lit.)
• water accumulation tank with inbuilt stainless steel DHW water tank – CAS-B
• CAS-B 503 (465 lit.), CAS-B 803 (727 lit.), CAS-B 1003 (920 lit.), CAS-B 1503 (1426 lit.), CAS-B 2003 (2122 lit.)
• water accumulation tank with inbuilt DHW water tank and heat exchanger – CAS-BS
• CAS-BS 503 (465 lit.), CAS-BS 803 (727 lit.), CAS-BS 1003 (920 lit.), CAS-BS 1503 (1420 lit.), CAS-BS 2003 (2110 lit.)

EC DECLARATION OF CONFORMITY

Manufacturer: Centrometal d.o.o.
Name and address: HR-40306 Macinec, Glavna 12, Hrvatska/Crootia

We declare under our sole responsibility that
Product designation: Accumulation tank for central heating
Type/model: CAS 303 – 503/1003/1503/2003
CAS-S 503/803/1003/1503/2003
CAS-B 503/803/1003/1503/2003
CAS-BS 503/803/1003/1503/2003

is in conformity with the provisions of the following regulations

1. PED Directive 2014/68/EU (at belongs to sound engineering practices SEP)
2. Directive 2009/125/EC
3. Directive 2010/30/EC

and also complies with the following standards

PED Directive 2014/68/EU EN 13445
Directive 2009/125/EC Commission Regulation (EU) No 814/2013
Directive 2010/30/EC Commission Regulation (EU) No 812/2013

According to PED product isn’t under CE mark.

Place and date of issue Name, surname and signature of authorized person

Macinec, 16.12.2022.

Company assumes no responsibility for possible inaccuracies in this book originated typographical errors or rewriting, all figures and diagrams are principal and it is necessary to adjust each actual situation on the field, in any case the company reserves the right to enter their own products such modifications as considered necessary.

Centrometal d.o.o. Glavna 12, 40306 Macinec, Hrvatska
centrala tel: +385 40 372 600, fax: +385 40 372 611
servis tel: +385 40 372 622, fax: +385 40 372 621
www.centrometal.hr
e-mail: servis@centrometal.hr

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