Sinclair ST-400DE User manual

Brand: Sinclair

Model: ST-400DE

Type: User manual

Sinclair ST-400DE is a stationary indirectly heated tank designed to prepare domestic hot water when connected to a heat pump. It can be also connected to a heat source with a heating water temperature of up to 110°C. Additional heating can be done by electric heating element TJ 6/4". The tank has a volume of 352 liters and is insulated with 50mm or 60mm polyurethane CFC-free foam. It is equipped with two magnesium anode rods for corrosion protection. The tank has a maximum operating pressure of 1 MPa and a maximum operating temperature of 80°C.

INSTRUCTIONS

ST-400DE

INDERECT ENAMEL

BUFFER TANKS

P U

HEAT

TABLE OF CONTENTS

1 PRODUCT SPECIFICATIONS ........................................................................................................................ 3

1.1 FUNCTION DESCRIPTION ................................................................................................................... 3

1.2 CONSTRUCTION AND BASIC DIMENSIONS OF THE TANK .................................................................. 3

1.2.1 PRODUCT DESCRIPTION............................................................................................................. 3

1.2.2 SPECIFICATIONS ......................................................................................................................... 4

1.2.3 PRESSURE LOSS .......................................................................................................................... 6

2 OPERATING AND INSTALLATION INFORMATION ...................................................................................... 6

2.1 COMMISSIONING OF THE TANK ........................................................................................................ 6

2.2 CONNECTING THE TANK TO THE DHW DISTRIBUTION SYSTEM ........................................................ 7

2.3 PLUMBING ......................................................................................................................................... 8

2.4 CONNECTING THE TANK TO THE HEATING SYSTEM .......................................................................... 9

2.5 CLEANING THE TANK AND REPLACING THE ANODE ROD................................................................ 10

2.6 SPARE PARTS.................................................................................................................................... 11

3 IMPORTANT CAUTIONS ........................................................................................................................... 11

3.1 IMPORTANT CAUTIONS ................................................................................................................... 11

3.2 INSTALLATION REGULATIONS.......................................................................................................... 11

3.3 DISPOSAL OF THE PACKING MATERIAL AND NON-FUNCTIONING PRODUCT ................................ 11

PLEASE READ THIS MANUAL CAREFULLY BEFORE

INSTALLING THE WATER TANK!

Dear Customer,

SINCLAIR CORPORATION, Ltd.thanks you for your decision to use a product of our brand. Through these

instructions, we will familiarize you with the use, design, maintenance and other information about electric

water tanks.

This product is not intended to be operated by

a) persons (including children) with reduced physical, sensory or mental capabilities, or

b) persons with insufficient knowledge and experience, unless being supervised by a responsible

person or have not been properly trained.

The manufacturer reserves the right to modify the product. This product is designed for permanent contact

with drinking water.

We recommend using this product in an indoor environment with air temperatures from +2 °C to +45 °C

and max relative humidity of 80%.

Made in the Czech Republic.

The meaning of the pictograms used in the manual

Important information for the user of the tank.

A manufacturer's recommendation to ensure trouble-free operation and long life of the

product.

ATTENTION!

Important notice to be followed.

1 PRODUCT SPECIFICATIONS

1.1 FUNCTION DESCRIPTION

The indirectly heated stationary tank is designed to prepare DHW when connected to the heat pump.

Additional heating can be done by electric heating element TJ 6/4".

1.2 CONSTRUCTION AND BASIC DIMENSIONS OF THE TANK

1.2.1 PRODUCT DESCRIPTION

The tank is welded from a steel sheet and protected by a hot water resistant enamel. As additional

protection against corrosion, 2 magnesium anode rods are installed in the top part and in the side flange of

the tank. These rods change the electrical potential inside the tank and thus reduce the effects of

corrosion. One heat exchanger made of steel tube helical coil with an outside enamel coating is welded

inside of the tank. There are also connections for hot, cold and circulating water and a thermostat socket.

The tube heat exchanger is intended only for the heating circuit.

On the tank side, there is a cleaning and inspection opening with flange cover (flange inside diameter is

110 mm) secured by eight M8 bolts with 150 mm spacings. The tank has also a G 1½" opening for screwing

an auxiliary heating element. This option is used to heat up the water in the upper part of the tank to the

required temperature when the tank is connected to a heat pump system. The tank is insulated with 50mm

or 60mm polyurethane CFC-free foam; tank case is made of plastic.

1.2.2 SPECIFICATIONS

TYPE

ST-400DE

VOLUME l

352

HEIGHT mm

1644

DIAMETER mm

700

MAX WEIGHT WITHOUT

WATER

190

MAX OPERATING

OVERPRESSURE IN THE TANK

MPa

MAX OPERATING

OVERPRESSURE IN THE

EXCHANGER

MPa

MAX HEATING WATER

TEMPERATURE

°C

110

MAX OPERATING

TEMPERATURE IN THE TANK

°C

EXCHANGER HEATING

SURFACE

5.2

EXCHANGER VOLUME l

ENERGY CLASS

STATIC LOSS W

ST-400DE

1644

812

852

700

1521

843

1138

288

228

1081

592

1237



1" outer



3/4" inner



5/4" inner



1/2" inner



6/4" inner

100

150

200

250

300

350

400

0 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5

mbar

m3/h

1.2.3 PRESSURE LOSS

2 OPERATING AND INSTALLATION INFORMATION

2.1 COMMISSIONING OF THE TANK

After connecting the tank to the water distribution system, hot water heating system, and eventually to the

electric network, and after checking the safety valve (according to the instructions attached to the valve),

the tank may be put into operation.

Procedure:

a) Check the plumbing and electrical installation including the connection to the hot water heating

system. Check the proper placement of both operational and safety thermostat sensors. The

sensors must be inserted all the way in the socket; first the operational thermostat and then the

safety thermostat.

b) Open the hot water valve on the mixing battery.

c) Open the valve on the cold water inlet to the tank.

d) When the water starts to flow through the hot water valve, the tank is filled up and the valve

should be closed.

e) Should a leakage (of the flange cover) occur, we recommend to tighten the bolts of the flange

cover.

f) When heating the sanitary water using the thermal energy from the hot water heating system,

switch off the electricity and open the valves on the inlet and outlet of heating water, eventually

bleed the heat exchanger. When commencing operation, flush the tank until the cloudiness

disappears.

g) Fill properly the warranty card.

2.2 CONNECTING THE TANK TO THE DHW DISTRIBUTION SYSTEM

Fig. 1

Heaters with a capacity above 200 litres must be equipped with a combined temperature and pressure

(T&P) relief valve according to ČSN EN 1490 on the hot water outlet, or with a temperature relief valve

equipped with a water temperature sensor located in the heater, or with another safety valve DN 20 with

an opening overpressure that is equal to max operating overpressure of the heater tank. This safety valve

cannot be used as a substitution of the safety valve at the cold water inlet. No stop/check valve or filter can

be placed between the safety valve and the heater.

The cold water inlet of the tank must be equipped with a T-fitting with a drain valve to drain

the water from the tank if needed.

Each heater that can be individually blocked must be equipped with a stop valve, test valve or

a plug to test the function of the check valve, check valve and safety valve at the cold water

inlet. Heaters with a capacity above 200 litres must also be equipped with a pressure gauge.

The test valve, check valve, safety valve and pressure gauge must also be installed at the hot

water inlet.

DHW

Sensor socket

Water heater

Circulation

Pump

Expansion tank

Heating water

Heat pump

Cold water

Return water

Screwed

heating

element

● The use of an expansion tank is not necessary for proper

connection, but only a possible solution variant.

U – Stop valve

P1 – Safety walve with check valve

P2 – Safaty valve for heating circuit

V – Drain valve

M – Manometer

T – 3-way valve

O – Bleed valve

ZK – Test valve for check of the tightness of

the check valve

2.3 PLUMBING

Pressure water is connected to the 3/4" threaded pipes at the bottom of the tank. Blue - cold

water inlet, red – hot water outlet. To disconnect the tank in case of need, it is necessary to

install a Js 3/4" screw fittings at the water inlets and outlets. The safety valve is mounted on

the cold water inlet marked with a blue ring.

Each pressure hot water tank must have a membrane spring-loaded safety valve. Nominal

clearance of safety valves is determined according to the applicable standard. The tanks are

not equipped with a safety valve. The safety valve must be easily accessible and as close to the

tank as possible. The inlet pipe must have at least the same clearance as the safety valve. The

safety valve must be placed high enough to ensure the dripping water drain by gravity. We

recommend mounting the safety valve onto a branch pipe. This allows you to easier replace

the valve without having to drain the water from the tank. Safety valves with fixed pressure set

by the manufacturer are used for the assembly. The opening pressure of the safety valve must

be identical to the maximum allowed tank pressure, and at least 20% higher than the

maximum pressure in the water distribution system (water main) (Table 1). If the pressure in

the water distribution system exceeds this value, a reduction valve must be included in the

system. No stop valve can be put between the tank and safety valve. Follow the installation

manual provided by the manufacturer of the safety valve.

The safety valve must be checked each time before putting it into operation. The check is

performed by the manual moving of the membrane away from its seat by turning the knob of

the releasing device always in the arrow direction. After being turned, the knob must click back

into a notch. The proper function of the releasing device results in water draining through the

safety valve drain pipe. If the releasing device functions properly, water runs off through the

safety valve drain pipe.

In normal operation, it is necessary to perform this check at least once a month and each time,

when the tank was shut down for more than 5 days. Water may be dripping from the safety

valve drain pipe; the pipe must be opened into the air, pointed down and placed in an

environment where the temperature does not drop below the freezing point. When draining

the tank, use the recommended drain valve. First, close water inlet of the tank.

You can find the required pressures in the following table (Table 1). For proper operation of the safety

valve, the check valve must be mounted on the inlet pipe to prevent spontaneous draining of the tank and

penetration of hot water back into the water distribution system. We recommend using the shortest

possible distribution of hot water from the tank to reducing heat loss. At least one detachable joint must be

installed between the tank and each supply pipe. Appropriate pipes and fittings must be used with

sufficiently high maximal temperature and pressure values.

Table 1

2.4 CONNECTING THE TANK TO THE HEATING SYSTEM

The tank should be placed on the ground next to a heating source, or in its vicinity. The heating circuit

should be connected to the marked inlets and outlets of the heater exchanger, and the bleeding valve

should be mounted at the highest point. It is necessary to install a filter into the heating circuit to protect

the pumps, three-way valve, check valves and heat exchanger from clogging. We recommend flushing the

heating circuit before installation. All interconnecting piping should be properly thermally insulated. If the

system will work with the priority heating of DHW using a three-way valve, follow the installation

instructions provided by the manufacturer of the three-way valve.

Example of a group of tanks connected using the Tichelmann method for balanced consumption of hot

water from all tanks

Fig. 2

OPENING PRESSURE

OF THE SAFETY

VALVE [MPa]

ALLOWED

OPERATING

OVERPRESSURE OF

THE WATER TANK

[MPa]

MAX PRESSURE IN

THE COLD WATER

PIPING [MPa]

0.6 0.6 Up to 0.48

0.7 0.7 Up to 0.56

1 1 Up to 0.8

DHW

HeW inlet

Thermostat socket

HeW outlet

DHW

HeW inlet

HeW outlet

DHW

HeW inlet

HeW outlet

HeW input

HeW output

DHW output

CW input

HeW – Heating water DHW – Domestic hot water

CW – Cold water 1 – Check valve

C – circulation 2 – Pump

2.5 CLEANING THE TANK AND REPLACING THE ANODE ROD

Repeated heating of water causes a limescale deposition on the enamelled tank surface and mainly on the

flange cover. Deposition depends on the hardness of heated water, its temperature, and the amount of hot

water consumed.

We recommend to check the tank and the anode rod after two years of operation and

remove the limescale or replace the anode rod if needed.

The expected lifetime of the anode rod is two years of operation; however, it varies according to the

hardness and chemical composition of the water at the place of use. Based on this inspection, it is possible

to schedule the next replacement of the anode rod. Call a service company to clean the tank or replace the

anode rod. When draining water from the tank, the hot water valve of the mixing battery must be opened

to avoid underpressure in the tank, which would prevent water from draining.

To prevent the growth of bacteria (e.g. Legionella pneumophila) in the tank heaters, it is

recommended, if inevitable, to periodically and temporarily increase the temperature of the

DHW to at least 70 °C. Another way to disinfect DHW may also be applied.

PROCEDURE FOR REPLACING THE ANODE ROD IN THE UPPER PART OF THE TANK

1. Turn off the control voltage to the tank

2. Drain water from 1/5 of the tank.

PROCEDURE: Close the water inlet valve of the tank.

Open the hot water valve of the mixing battery.

Open the drain valve of the tank.

3. The anode is screwed under the plastic cover in the upper lid of the tank.

4. Unscrew the anode with a suitable wrench.

5. Pull out the anode and reverse the procedure to install the new anode.

6. When mounting, make sure the earthing cable (300 l) is connected correctly; it is a condition for

proper anode function.

7. Fill the water tank with water.

PROCEDURE FOR REPLACING THE ANODE ROD IN THE SIDE FLANGE

1. Turn off the control voltage to the tank

2. Drain water from the tank.

PROCEDURE: Close the water inlet valve of the tank.

Open the hot water valve of the mixing battery.

Open the drain valve of the tank.

3. One anode is screwed under the plastic cover in the upper lid of the tank and the second anode is

screwed on the side flange.

4. Unscrew the anode with a suitable wrench.

5. Pull out the anode and reverse the procedure to install the new anode.

6. Fill the water tank with water.

2.6 SPARE PARTS

- Magnesium anode

- Contact thermometer

Give part name, type, and type number from the tank label when ordering spare parts.

3 IMPORTANT CAUTIONS

3.1 IMPORTANT CAUTIONS

The warranty card is invalid without certification from a professional firm, which confirms the

electrical installation and plumbing.

Check the protective Mg anode regularly and replace it if needed.

No stop valve can be put between the heater and the safety valve.

All hot water outputs must be fitted with a mixing battery.

Before filling the tank with water for the first time, it is recommended to tighten the nuts on

the flange connection of the tank.

3.2 INSTALLATION REGULATIONS

Both electric and water installations must follow and meet the requirements and regulations in

the country of use.

3.3 DISPOSAL OF THE PACKING MATERIAL AND

NON-FUNCTIONING PRODUCT

A service fee for providing return and recovery of packaging material has been

paid for the packaging in which the product was delivered. The service fee was

paid to EKO-KOM a.s. pursuant to Act no. 477/2001 Coll. as amended. Client

number of the company is F06020274. Dispose of packaging materials at a public

waste disposal site. Uninstall the discarded and unserviceable product after the

end of the operation and transport it to the waste recycling centre (collecting

yard), or contact the manufacturer.

6-9-2018

NOTE CONCERNING PROTECTION OF

ENVIRONMENT

This product must not be disposed of via normal household waste after its service life, but must be

taken to a collection station for the recycling of electrical and electronic devices. The symbol on the

product, the operating instructions or the packaging indicate such disposal procedures. The materials

are recyclable in accordance with their respective symbols. By means of re-use, material recycling or

any other form of recycling old appliances you are making an important contribution to the protection

of our environment. Please ask your local council where your nearest disposal station is located.

In case of quality problem or other please contact your local supplier or authorized service center.

Emergency number: 112

PRODUCER

SINCLAIR CORPORATION Ltd.

1-4 Argyll St.

London W1F 7LD

Great Britain

www.sinclair-world.com

This product was manufactured in China (Made in China).

REPRESENTATIVE

SINCLAIR Global Group s.r.o.

Purkynova 45

612 00 Brno

Czech Republic

TECHNICAL SUPPORT

SINCLAIR Global Group s.r.o.

Purkynova 45

612 00 Brno

Czech Republic

Tel.: +420 800 100 285

Fax: +420 541 590 124

www.sinclair-solutions.com

info@sinclair-solutions.com

Sinclair ST-400DE User manual

Sinclair ST-400DE User manual

Sinclair ST-400DE User manual

Related papers

Other documents