ACV Comfort E Series Installation, Operating & Servicing Instructions

Comfort E InstallatIon, operatIng and servIcIng InstructIons all-guides com

GENERAL 3 Notes 3 Packaging 3 SAFETY PRECAUTIONS 4 Symbols used 4 Recommendations 4 APPLIANCE DESCRIPTION 5 Operation in accordance with instructions 5 TECHNICAL CHARACTERISTICS 6 General characteristics 6 INSTALLATION 7 Position 7 Dimensions 8 Wiring diagram 8 Hydraulic connection 9 BRINGING INTO SERVICE 12 Filling the DHW tank 12 Filling the heating circuit of the tank 12 Checks before bringing into service 13 MAINTENANCE 14 Periodic checks by the user 14 Annual maintenance 14 Replacement of the electric heating element 14 Drainage 15

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. This appliance is not intended for use by persons with reduced physical, sensory or mental capacities, or lack of experience and knowledge (including children), unless they have been supervised or instructed concerning use of the appliance by a person responsible for their safety. 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 • An hot water production tank. • An multilingual technical instructions. • An wall-mounting kit with support and one flow diverter.

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. 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.

WITH INSTRUCTIONS 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. The tank is equipped with an electric element of 2200 W controlled by the thermostat of the Comfort E. 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. Stainless steel dry-well 12. Electric heating element APPLIANCE DESCRIPTION 9 12 3 2 4 11 6 7 9 8 10 5 1

Comfort E 100 130 160 210 240 Total capacity L 105 130 161 203 242 Primary capacity L 30 55 62 77 78 Primary heating power input kW 18 19 25 28 37 Operating pressure (DHW) bar 8,6 8,6 8,6 8,6 8,6 Operating pressure (primary) bar 3 3 3 3 3 Max. design pressure bar 10 10 10 10 10 Primary flow rate L/s 0,83 0,83 0,83 0,83 0,83 Standing heat loss kWh/24h 2,73 2,73 2,92 3,82 3,87 Initial heating time minutes 9 : 10 9 : 10 8 : 50 8 : 50 8 : 50 Max. temperature ° C 90 90 90 90 90 Heating surface area m2 1.03 1.03 1.26 1.54 1.94 Operating system : 85°C T° of water supply : 10°C Supply pressure - 6 bar max. without requiring a pressure reducer. Water quality • Chlorides < 150 mg/L • 6 ≤ pH ≤ 8 • If the water hardness is > 20°fH, it is advisable to install a water softener. (*) Standard EN 12897 : 2006 all-guides com

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 appliance should be positioned to allow the replacement of the sparge tube and dry well during servicing, if required. The Comfort E must be assembled with the heating electrical heating element to the bottom (DHW pipes to the bottom).

Key 1. Power supply plug 2. Control thermostat [60-90°C] 3. Manual RESET high limit thermostat [103°C max.] 4. Summer/winter swicth 5. Domestic hot water priority relay 6. Electric heating element 7. Loding pump [in option] 1 7 2 1 2 3 4 5 6 1 2 3 4 5 6 c 1 2 c 1 2 3 4 6 5 Br Y/Gr B Br B Br Br W W Y/Gr B B B B G B R G Bk Or R R B Br R V Br Or B A C D D Ø 3/4" Ø 3/4" 360 300 Ø 563 mm B A C D D Ø 3/4" Ø 3/4" 360 300 Ø 563 mm

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. To avoid any risk of corrosion, connect the stainless steel tank directly to the earth. Hot water can burn! ACV recommends using a preset 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, a non- return valve, a domestic safety valve calibrated to 7 bar and an expansion vessel of suitable size. • 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. • The installation of a domestic expansion vessel avoids discharge from the safety valve (loss of water). • Capacity of domestic water vessels: 5 Litres for the models : 100 / 130 8 Litres for the models : 160 / 210 12 Litres for the model : 240 Refer to the manufacturer’s technical instructions on the expansion vessel for more details. 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 (7 bar) TH. Tank hot water outlet TC. Tank cold water inlet A B e s D C TC TH

Key 1. Heating stop valve 2. Charging pump 3. Check valve 4. Stop valve 5. Primary circuit filling valve 6. Drain down valve 7. Manual air vent valve DOMESTIC HOT WATER CONNECTION Key 1. Domestic water supply valve. 2. Pressure reducer 3. Check valve 4. Stop valve 5. DHW expansion vessel 6. Pressure gauge 7. Safety valve 8. Drain down valve 9. Hot water outlet 10. Earth connection 4 3 1 2 9 7 8 6 5 10 4 6 1 4 1 5 4 2 5 3 3 7

Key 1. Domestic water supply valve. 2. Pressure reducer 3. Check valve 4. Stop valve 5. DHW expansion vessel 6. DHW pressure gauge 7. DHW safety valve 8. Drain down valve 9. Hot water outlet 10. Earth connection 11. Primary expansion vessel 12. Primary pressure gauge 13. Primary safety valve 14. Primary manual air vent 3 1 4 2 9 7 8 6 5 12 11 10 4 4 3 4 13 14 THis ConneCTion To Be pluGGeD Do not power the heating element if the primary circuit is not filled and correctly purged. all-guides com

FILLING THE DHW TANK Before bringing the hot water tank into service, check the connections to avoid any any risk of leaks during filling. The sealing of the DHW tank must only be checked with the feed water. The test pressure on the site must not exceed a pressure surge of 7 bar. The DHW tank must always be filled and pressurised before filling and pressurising the heating circuit. • To vent the DHW installation, simply open the highest hot water valve (9). • Fill the domestic hot water tank, by opening the valves (1) and (4). • Close the hot water valve (9), after the water flow has stabilised and the air has been completely evacuated. • Check all connections of the installation for leaks. FILLING THE HEATING CIRCUIT OF THE TANK Do not use vehicle or non- diluted antifreeze. This can cause serious injury, lead to loss of life or damage rooms. • Check that the drainage valve (6) for your primary installation is fully closed. • Open the valves (1) and (4) of the heating circuit connected to the boiler. • Open the air vent valve located in the upper part of the hot water tank. • In addition, follow the instructions provided with the boiler for filling. • Open the valves (7) 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. 4 3 1 2 9 7 8 6 5 10 4 4 3 1 2 9 7 8 6 5 10 4 6 1 4 1 5 4 2 5 3 3 7

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. • Check that the appliance is ON. 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. 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. 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.

• Check the pressure on the boiler. 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. REPLACEMENT OF THE ELECTRIC HEATING ELEMENT • Switch off and disconnect the mains power supply to the appliance. • Be careful with the high temperature of the cylinder. • Drain the primary tank. Danger! Risk of scalding while emptying the tank.

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

To drain the hot water heater’s DHW tank: • Close the check valve (1). • Connect the drain valve (2) to the drain using a flexible hose. • Open the drain valve (2) and drain the water from the DHW tank to the drain. • Open the domestic hot water tap (3) to accelerate the tank’s drainage. • Close the drain valve (2) and the hot water tap (3) after draining the cylinder’s DHW tank. 1 3 2 4 all-guides com