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The ACS 40 E is an instant domestic hot water mixer. It uses a brazed, stainless steel plate heat exchanger and is desi-
gned for use in combination with DHW storage cylinders.
The product is equipped with two filling/drain cocks. When the shut-off valves are closed, these can also be used to flush
out the heat exchanger.
A domestic hot water recirculation kit is available for further convenience.
The ACS 40 E instant hot water mixer comes complete with an insulated frame.
Description
1 DHW mixer in packing
2 Instruction manual
GENERAL SAFETY INFORMATION AND PRECAUTIONS
READ THIS MANUAL THOROUGHLY BEFORE PERFORMING ANY WORK ON THE PRODUCT.
The manufacturer reserves the right to modify the product without notice for the purpose of introducing technical im-
provements or to facilitate production, installation and positioning. The illustrations in this manual may therefore differ
slightly from the actual product. The safety of the product and the accuracy of the instructions provided are nevertheless
guaranteed.
This manual forms an integral part of the product itself and must be kept in a safe place in order to avoid damage and to
permit rapid consultation throughout the working life of the product.
Ideally, this manual should be kept with the product where it can be consulted whenever needed. The manual should
always accompany the product if sold or transferred to a new owner, or stay with it if the owner moves house and leaves
it behind, so that the next user can consult it.
THERMITAL MODEX ACS 40 E
DESCRIPTION
CONTENTS OF KIT
Qty.
1
1
1
cod. Doc-0072219 - Rev. 4 (05/17)
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Summary of Contents for thermital MODEX ACS 40 E
- Page 1 THERMITAL MODEX ACS 40 E DESCRIPTION The ACS 40 E is an instant domestic hot water mixer. It uses a brazed, stainless steel plate heat exchanger and is desi- gned for use in combination with DHW storage cylinders. The product is equipped with two filling/drain cocks. When the shut-off valves are closed, these can also be used to flush out the heat exchanger.
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Page 2: General Safety Information
GENERAL SAFETY INFORMATION INSTALLATION Disconnect the product from the mains power supply before commencing any work on it. The product must be installed in conformity to the laws and standards applicable in the country of installation. The manufacturer’s responsibility ends with the supply of the product. The product must be installed using best professio- nal practices, in conformity to applicable standards, by suitably qualified persons employed by a company that assumes full responsibility for the completed installation. -
Page 3: Main Components
MAIN COMPONENTS 1 Galvanised and internally insulated backplate 2 Ball valve, DN 20 3/4” F – 1” M (primary outlet) 3 Red knob for ball valve with temperature sensor (primary inlet) 4 Blue knob for ball valve with temperature sensor (primary outlet) 5 Pump (primary circuit) 6 Ball valves, DN 20 3/4”... -
Page 4: Water Circuit
WATER CIRCUIT 1 Valve with temperature sensor 6 Non-return valve 2 Modulating pump 7 Manual bleed valve 3 Heat exchanger 8 Manual drain valve 4 Flow meter 9 Recirculation pump (accessory kit) 5 Valve with temperature sensor 10 Safety valve TECHNICAL SPECIFICATIONS DESCRIPTION ACS 40 E... - Page 5 Domestic hot water production graph Mandata primario (°C) Primary inlet (°C) NB: Correct functioning of the product is only guaranteed if the primary circuit inlet temperature is at least 5°C higher than the DHW setpoint. CHARACTERISTIC CURVES FOR PRIMARY CIRCUIT PUMPS p/kPa p/kPa Wilo-Yonos Para RS...
- Page 6 DIMENSIONS AND FITTINGS ACS 40 E MP - Primary inlet 1 M - 3/4" F RP - Primary outlet (return) 1 M - 3/4" F EAFS - Domestic cold water 1 M - 3/4" F inlet UACS - DHW outlet 1 M - 3/4"...
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Page 7: Wiring Diagram
WIRING DIAGRAM Storage cylinder top sensor Storage cylinder bottom sensor Connect to controller terminal VFS1 SENSOR AND CONTROL LATO SONDE E CONTROLLO LATO ALIMENTAZIONE 230 V TERMINALS 230 V POWER TERMINALS... -
Page 8: System Schematic
SYSTEM SCHEMATIC Example of wall mounted installation Recirculation DHW outlet Primary inlet Cold water inlet Primary outlet (return) INSTALLATION PRELIMINARY CHECKS Carefully remove the packing and check that the product is complete and undamaged. If any defect or damage is de- tected, do not install or attempt to repair the product but return it to the retailer. - Page 9 Installation and connection of the product must be performed by an authorised, specialist company. The company installing the product assumes all responsibility for ensuring that the installation and functioning of the product conform to applicable standards. The product must be stored in a dry place where it is not subject to frost.
- Page 10 WATER CONNECTIONS CONNECTION TO THE WATER CIRCUIT 1 Safety valve 6 Fine mesh filter 2 Shut-off valve 7 Expansion vessel (accessory) 3 Pressure gauge K Fitting for domestic cold water supply 4 Non-return valve 5 Pressure reducer valve (necessary for K>=6 bar) The pipes between the product and the storage cylinder should be kept as short as possible.
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Page 11: Putting Into Service
ELECTRICAL CONNECTIONS The following instructions are mandatory. 1 Use a multi-pole, magnetic thermal, earth leakage breaker and disconnector that conforms to legislation in the count- ry of installation. 2 Respect the L (Phase) - N (Neutral) polarity. Keep the ground wire about 2 cm longer than the power wires. 3 Make sure the product is correctly connected to ground. -
Page 12: Flushing The Heat Exchanger
FLUSHING THE HEAT EXCHANGER - Shut off the DHW flow by closing the ball valves (1a) and (1b) for the cold water inlet and hot water outlet respectively. - Attach the flushing fluid supply to the cold water inlet valve (2b). - Attach the flushing fluid drain to the DHW outlet valve (2a). -
Page 13: About The Controller
- The manufacturer’s name plate and other factory marks applied to the controller must not be altered, removed or made illegible. - Only the settings described in these instructions are able to guarantee the correct operation of the controller. ABOUT THE CONTROLLER The MFWC controller enables efficient use and operational control of the mixer system. -
Page 14: Terminal Connection Diagram
TERMINAL CONNECTION DIAGRAM Relay connections will vary depending on what additional functions are selected. The polarity of the temperature sensors is irrelevant. The common wire should be connected to the bottom (-) terminal strip. Vortex flow sensors must be connected to the socket on the control panel. Sensor 2 / cold water: if no sensor is connected, a default temperature of 10 °C is set. -
Page 15: Menu Sequence And Menu Structure
DISPLAY AND PROGRAMMING Display The display (1), with full text and graphics mode, is self- explanatory to all intents and purposes, making the con- troller easy to use. The LED (2) lights up green when a relay is activated. The LED (2) lights up red when the operating mode is "Off". -
Page 16: Measured Values
The following menus are available 1. Measured values Current temperature values with explanations 2. Statistics General system control information, including hours operation, etc. 3. Operating mode Automatic mode, manual mode, or controller Off 4. Settings Management of parameters required for normal operation 5. -
Page 17: Operating Mode
3. OPERATING MODE Menu “3. Operating mode” allows selection of the desired 3.Exit operating mode mode of operation: automatic, off, or manual. To quit the menu, press “esc” or select “Exit operating 3.1.Auto mode”. 3.2.Manual 3.1 Automatic Info Automatic is the normal operating mode of the controller. Only automatic mode guarantees correct operation of the system, taking account of the current temperatures and the selected parameter settings! -
Page 18: Protective Functions
4.4.2 Tmin recirculation = Minimum recirculation temperature at sensor S1 Provided recirculation is enabled, if temperature drops below Tmin recirculation, the pump is switched on. Settings range: 10 °C to 85 °C 4.4.3 Recirculation hysteresis = Deactivates recirculation pump switching hysteresis If temperature exceeds Tmin at S1, the pump is switched off. -
Page 19: Special Functions
The user must make sure that the Anti-legionella function terminates successfully at the set periods. The AL function is switched off by default. A message containing the date is shown as soon as the AL function ter- minates successfully. The AL start time should be set during a period in which little hot water is drawn off. The user must make sure that the temperature of the storage cylinder is at AL Tset +5°... - Page 20 Settings range: (Solar:) 0 ...50 % / Default: See table (Heating:) 50 % ... 100 % / Default: See table 6.1.5. PWM on This signal is needed to switch on the pump at minimum speed. Settings range: (Solar:) 0 ...50 % / Default: See table (Heating:) 50 % ...
- Page 21 If no storage cylinder sensor is connected, storage temperature is set at 25 °C. 6.5.3.1 Storage stratification Activates or deactivates stratification. 6.5.3.2. ΔT storage return = The temperature differential for upper storage stratification If the temperature of the primary circuit exceeds the difference set here, the valve is activated to buffer the top of the storage cylinder.
- Page 22 sequence and providing a brief description of each parameter in the display. Press “esc” to go back to the previous value, which may need to be checked or changed. Press “esc” repeatedly to return to the selection mode and exit the wizard. Settings can be activated only by an expert service technician during the start-up procedure! Follow the instruc- tions given in this manual for the single parameters, and check whether or not further settings are required for the particular system.
- Page 23 8. SERVICE DATA Menu “8. Service data” can be used for the purposes of 8.1.Anti-legionella remote diagnosis by the manufacturer or a technician when investigating errors, etc. 8.2.Error message 8.3.Error message Info 9. LANGUAGE Menu “9. Language” can be used to select the language 9.Exit language in which menus are displayed and navigated.
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Page 24: Malfunctions And Error Messages
MALFUNCTIONS MALFUNCTIONS AND ERROR MESSAGES If the controller detects a malfunction, the red LED blinks and the warning symbol appears on the display. If the malfunction resolves itself, the warning symbol be- comes an information symbol and the red LED stops blin- (Flashing LED + king. - Page 25 DEFAULT PARAMETER SETTINGS TABLE Menu Parameter Setting range Default User setting 4. SETTINGS Tset 30°C ÷ 90°C 45°C Tmax 50°C ÷ 95°C 60°C 1-12 l/min, 1-20 l/min, VFS type 2-40l /min, 5-100 l/min, 2-40 l/min 10-200 l/min, 20-400l /min Request / Periods / 4.4.1 Recirculation Request+Periods /...
- Page 26 CHECKS On completion of the installation, perform the checks listed in the table below. DESCRIPTION All automatic or manual filling pumps removed. Safety valve calibrated to 6 bar, and flow open. Drain pipe from safety valve routed suitably. Expansion vessel correctly located and pre-charged to 2.5 bar...
- Page 28 RIELLO S.p.A. Via Ing. Pilade Riello, 7 37045 - Legnago (VR) www.thermital.it The manufacturer strives to continuously improve all products. Appearance, dimensions, technical specifications, standard equipment and accessories are therefore liable to modification without notice.
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