ACV Comfort 240

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EN

INSTALLATION, OPERATING AND SERVICING INSTRUCTIONS

Comfort

100 - 130 - 160 - 210 - 240

EN

TABLE OF CONTENTS GENERAL 4 Notes 4 Packaging 4 SAFETY PRECAUTIONS 5 Symbols used 5 Recommendations 5 APPLIANCE DESCRIPTION 6 Operation in accordance with instructions 6 TECHNICAL CHARACTERISTICS 7 General characteristics 7 Domestic hot water performance 7 Maximum operating conditions 7 INSTALLATION 8 Position 8 Dimensions 8 Domestic hot water connection (DHW) 9 Connection to the heating circuit 10 Position of DHW sensor 10 BRINGING INTO SERVICE 11 Filling the DHW tank 11 Filling the heating circuit of the tank 11 Checks before bringing into service 12 MAINTENANCE 13 Periodic checks by the user 13 Annual maintenance 13 Drainage 13

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GENERAL NOTES

This manual forms part of the items delivered with the appliance and must be given to the user to keep in a safe place! The system must be installed, commissioned, serviced and repaired by an approved installer, in accordance with current standards in force. The manufacturer declines all liability for any damage caused as a result of incorrect installation or in the event of the use of appliances or accessories that are not specified by the manufacturer. The manufacturer reserves the right to change the technical characteristics and features of its products without prior notice. The availability of certain models as well as their accessories may vary according to markets.

The installation must comply with the instructions contained in this manual as well as with the regulations governing installations for hot water production.

PACKAGING

The units are delivered assembled, tested and packaged in a cardboard box. Package contents • Hot water production tank. • Multilingual technical instructions.

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SAFETY INSTRUCTIONS SYMBOLS USED

Description below of the symbols used in this technical manual: Essential instruction for the correct operation of the installation.

Essential instruction for the safety of persons and the environment.

Danger! Risk of serious injury.

We accept no responsibility in the event of damage caused by failure to follow the instructions appearing in this technical manual.

RECOMMENDATIONS Before installing and bringing the appliance into service, first carefully read this manual. It is strictly prohibited to modify the interior of the appliance in any way, without the manufacturer's prior written agreement. The appliance must be installed by a qualified engineer, in accordance with current regulations. The installation must comply with the instructions contained in this manual as well as current regulations governing hot water production installations. Failure to follow the instructions describing test operations and procedures could result in personal injury or a risk of environmental pollution. In order to ensure the appliance operates correctly, it is important to have it serviced by an approved contractor every year. If there is a problem please contact your contractor for advice. Faulty parts must only be replaced with original factory parts.

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APPLIANCE DESCRIPTION OPERATION IN ACCORDANCE WITH INSTRUCTIONS

Key 1. Cold water inlet 2. Domestic hot water outlet 3. Manual air vent valve 4. Primary fluid inlet 5. Primary fluid outlet 6. 30 mm of insulation in polyurethane (without CFCs) 7. Primary carbon steel tank 8. DHW stainless steel tank 9. Rigid polypropylene cover 10. External polypropylene casing 11. Rigid polypropylene base 12. Stainless steel dry-well

Our domestic hot water tanks are designed and manufactured exclusively for the re- heating and storage of domestic hot water. The domestic hot water heaters must only be heated using heated water in a closed circuit.

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TECHNICAL CHARACTERISTICS General characteristics

100

130

160

210

240

Total capacity

L

105

130

161

203

242

Primary capacity

L

30

55

62

77

78

Maximum absorbed power

kW

23

23

31

39

53

Drained weight

kg

37

40

47

58

65

Initial heating time

minutes

24

24

22

22

20

Heating surface area

m2

1.03

1.03

1.26

1.54

1.94

Operating system: 85°C

T° of water supply: 10°C

MAXIMUM OPERATING CONDITIONS Maximum service pressure [tank full of water] - Primary circuit: 3 bar - Hot water circuit: 10 bar Test pressure [tank full of water] - Primary circuit: 3.9 bar - Hot water circuit: 13 bar Operating temperature - Maximum temperature:

90°C

Water quality • Chlorides < 150 mg/L • 6 ≤ pH ≤ 8 • If the water hardness is > 20°fH, it is advisable to install a water softener.

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INSTALLATION POSITION The hot water cylinder must be installed in an area that is dry and protected from the elements. Choose the most suitable location according to the position of the boiler and distance to the domestic hot water supply, in order to reduce temperature and pressure drops within the pipe work.

The unit should be positioned to allow the replacement, if required, of the sparge tube and dry well during servicing. The unit can be floor standing or wall mounted (using correct mounting available as an option).

DIMENSIONS

100

130

160

210

240

A

mm

845

1005

1205

1475

1720

B

mm

580

740

940

1210

1455

C

mm

215

215

215

215

210

D

Ø

1"

1"

1"

1"1/4

1"1/4

Ø 3/4"

Ø 3/4"

D

50 mm 500 mm

A B D

360 mm Ø 525 mm

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INSTALLATION DOMESTIC HOT WATER CONNECTION



• The installation of a domestic expansion vessel avoids discharge from the safety valve (loss of water).

The installation of a safety unit is compulsory. To avoid water discharge on to the tank, the safety unit must never be installed above the tank.



In certain countries the domestic kits must be approved and included a temperature and pressure relief valve fitted in the hot outlet.

The circuit illustrations are basic principle diagrams only.



To avoid any risk of corrosion, connect the stainless steel tank directly to the earth.



Capacity of domestic water vessels: 5 Litres: for models: 100 / 130 8 Litres: for models: 160 / 210 12 Litres: for model: 240 Refer to the manufacturer’s technical instructions on the expansion vessel for more details.

Connection to the DHW circuit 1. Isolating valve 2. Pressure reducer 3. Non-return valve 4. DHW expansion vessel 5. Safety valve 6. Drain down valve 7. Air vent valve 8. Hot water outlet 9. Pressure gauge 10. Earth connection

Hot water can burn! ACV recommends using a pre- set thermostatic mixer valve in order to provide hot water at a maximum of 60°C.

Recommendations • The tank’s cold water supply pipe must be fitted with a safety unit that includes at least: an isolating valve (1), a non- return valve (3), a domestic safety valve calibrated to 10 bar (5) and an expansion vessel (4) of suitable size.

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• When the operating pressure exceeds 6 bar, a pressure reducer (2) must be installed before the safety unit. • Union fittings are recommended for the easy dismantling of the DHW connections. Ideally, the “dielectric” version is favourable to protect the connections from corrosion with the presence of different metals such as copper and galvanised steel.

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INSTALLATION DHW connection kit available (code: 10800102) A. DHW temperature control valve B. Mixed domestic hot water outlet C. Cold water supply D. Drainage connection E. DHW expansion vessel connection S. Safety valve (10 bar) TH. Tank hot water outlet TC. Tank cold water inlet

B S

E A TC

C D

CONNECTION TO THE HEATING CIRCUIT 1. 2. 3. 4. 5. 6.

Heating isolating valve Charging pump Non-return valve Preheater isolating valve Primary circuit filling valve Drain down valve

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POSITION OF DHW SENSOR 1

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BRINGING INTO SERVICE FILLING THE DHW TANK

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Before bringing the hot water tank into service, check the connections to avoid any 1 1 4 any risk of leaks during filling. 5 9 The sealing of the DHW tank must only be checked with the feed water. 7 The test pressure on the site must not exceed a pressure surge of 10 bar. The DHW tank must always be filled and pressurised before filling and pressurising 10 the heating circuit. 1

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• To vent the DHW installation, simply open the highest hot water valve (8). • Fill the domestic hot water tank, by opening the stop valves (1). • Close the hot water valve (8), after the water flow has stabilised and the air has been completely evacuated. • Check all connections of the installation for leaks.

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FILLING THE HEATING CIRCUIT OF THE TANK 1

Do not use vehicle or non- diluted antifreeze. This can cause serious injury, lead to loss of life or damage rooms.

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5 • Check that the drainage valve (6) for your 3 primary installation is fully closed. • Open the isolation valves (1) and (4) of the heating circuit connected to the boiler. 1 4 5 • Open the air vent valve located in the upper part of the hot water tank. • In addition, follow the instructions 6 provided with the boiler for filling. • Open the valves (5) to start filling. • When the air is eliminated, first close the air vent valve, then the filling valves (5). • If antifreeze is needed in the primary circuit, it must comply with Public Hygiene Regulations and must not be toxic. A food grade of Propylene Glycol is recommended. Consult the manufacturer to determine the compatibility of the antifreeze with the tank’s construction materials.

Fill the system with the fresh tap water. Contact your ACV representative or installer about the use of inhibitors.

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BRINGING INTO SERVICE CHECKS BEFORE BRINGING INTO SERVICE • Check that the safety valves (DHW) and (heating) are correctly installed and that the outlets are connected to the drain. • Check that the DHW tank and the primary circuit are filled with water. • Check that the air has been correctly vented on both circuits. • Check that the heater’s upper air vent valve is water tight. • Check that the DHW and heating pipes are correctly connected and not leaking. Recommendations The risk of developing bacteria exists, including “Legionella pneumophila”, if a minimum temperature of 60°C is not maintained in both the storage tank and in the hot water distribution network. In the event of small amounts of hot water repeatedly being drawn, a stratification effect can develop in the tank. The upper hot water layer may then reach very high temperatures. A thermostatic mixer valve will ensure that extremely hot water does not run from the taps. Water heated for washing clothes, dishes and other uses can cause serious burns. In order to avoid exposure to extremely hot water that can cause serious burns, never leave children, old people, disabled or handicapped people in the bath or shower alone. Never allow young children to turn on the hot water or fill their own bath. Adjust the water temperature in accordance with usage and plumbing regulations.

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MAINTENANCE PERIODIC CHECKS BY THE USER

• Check the pressure on the boiler pressure gauge: this should be between 0.5 and 1.5 bar. • Each month visually inspect the valves, connections and accessories in order to detect any leaks or malfunction. • Periodically check the air vent valve located in the upper part of the tank to ensure that it is not leaking. • Check the DHW safety valves are in good working order. • In the event of a problem, please contact an engineer or your installer.

ANNUAL MAINTENANCE

The annual maintenance service, performed by an engineer, must include: • •

A check of the air vent valve: The venting of air can lead to the need for adding water to the system. Check the pressure on the boiler’s pressure gauge. The manual activation of the DHW safety valve once a year. This operation will lead to a discharge of hot water. Before draining hot water through the safety valve, ensure that the outlet goes directly to the drain to avoid any risk of burning and potential damage as a result.

• The discharge pipe must be open to the outside. • If the safety unit drips periodically, this may be due to an expansion problem or clogging of the valve. • Follow the circulator’s maintenance instructions. • Check that the valves are in good working order.

Drain valve Recommendations Drain the tank if it is not used in winter and is at risk from exposure to ice. If the primary circuit water contains antifreeze, only the DHW tank must be drained. Before draining the DHW, isolate the tank and lower the pressure of the primary circuit to 1 bar, in order to protect the DHW tank from crushing. If the heating circuit does not contain antifreeze, the heating circuit and domestic water must be drained. Always drain the heating circuit before draining the DHW.

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MAINTENANCE DRAINAGE OF THE HEATING TANK To drain the primary circuit of the hot water heater: • Isolate the hot water primary circuit by closing valves (A) and (B).

D A

• Connect the drain valve (C) to the drain using a flexible hose. • Open the drain valve (C) and drain the water from the primary circuit to the drain. • Open the tank’s air vent valve (D) to accelerate drainage.

B

• Close the drain valve (C) and air vent (D) after draining the tank.

C

DRAINAGE OF THE DHW TANK To drain the hot water heater’s DHW tank: • Close the isolation valves (1). 1

• Connect the drain valve (2) to the drain using a flexible hose.

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• Open the drain valve (2) and drain the water from the DHW tank to the drain. • Open the circuit’s air vent valve (3) to accelerate the tank’s drainage. • Close the drain valve (2) and the air vent valve (3) after draining the cylinder’s DHW tank.

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