Dimplex DHWE 50 S Smart Wall Mounted Water Heater Instruction Manual

Dimplex DHWE 50 S Smart Wall Mounted Water Heater Instruction Manual

Notes on safe operation

NOTE
Please read these instructions carefully. Keep these instructions in a safe place and pass them on to possible future owners.

• The device is only suitable for domestic hot water preparation within enclosed rooms.
• The device must only be installed by an authorised specialist.
• A disconnecting device with at least 3 mm contact opening (e.g. circuit breaker) must be provided in the permanently installed wiring
• The maximum water pressure specified on the rating plate must not be exceeded at any time.
• The device must be disconnected from the power source before work is carried out on the device.
• Repairs and corrective measures must only be carried out by a qualified electrician or by your after-sales service.
• The device must be reliably connected to a protective conductor.
• Switch off the fuse in the event of a fault.
• Block the water supply in the event of leaks.
• Only have the fault remedied by the plant aftersales service or a recognised specialist company

ATTENTION!
This device can be used by children aged 8 and over and by persons with limited physical, sensory or mental aptitude or lack of experience and/or knowledge, providing they are supervised or have been instructed in the safe use of the device and understand the associated potential dangers.

ATTENTION!
Cleaning and user maintenance may not be carried out by children without supervision! Children must be supervised to ensure that they do not play with the device.

ATTENTION!
A separating device must be installed in the fixed electrical installation in accordance with the setup regulations, which has a contact clearance in accordance with the conditions of over voltage category III on every pole for full separation.

• It is recommended that a separate electric circuit be provided for the power supply.
• The current regulations in accordance with VDE 0100 Part 701 must be observed.
• Ensure that the electrical connection cable does not come into contact with the domestic hot water pipe.
• With a closed pressure connection system, a safety valve must be used on the cold water supply pipe of the domestic hot water cylinder to prevent impermissible pressure rises.
• Ensure that water can drip unhindered out of the outlet opening of the safety valve (into open atmosphere).
• The drain pipe of the safety valve must be installed vertically downwards and frost-free.
• Check the safety valve regularly to ensure that it is not blocked. Any limescale deposits must be removed.
• No isolating valve may be installed between the domestic hot water cylinder and the safety valve.
• Before the domestic hot water cylinder is connected to the power supply and switched on, it must be filled with water.
• The domestic hot water cylinder is equipped with an additional temperature safety device. In the event of a fault, if the thermostat fails, the water temperature in the tank can increase up to 130 °C in line with the safety standards. Water connections and pipelines must be suitable.
• If you disconnect the domestic hot water cylinder from the grid, it must be emptied if there is a risk of frost.

x 975 x 512
Weight empty / weight filled| kg| 28 / 78| 34 / 114| 39 / 139
Thermal insulation| | PU foam 40 mm (min.)
Temperature setting values| °C| 10 / 25 / 35 / 45 / 57 / 65 / 75
Colour| | White (RAL 9010) with black operating panel
Load profile| | M| M| L
Energy efficiency class according to (EU) 812/2013| | B| B| C
Energy efficiency (ηwh) according to (EU) 812/2013| %| 40| 40| 40
Annual energy consumption| kWh| 1257| 1266| 2464
Set temperature| °C| 57| 57| 57
Weekly nominal power consumption with intelligent regulation| kWh| 23,05| 24,54| 48,04
Weekly nominal power consumption without intelligent regulation| kWh| 26,75| 28,50| 53,83
Overload protector| | +| +| +
Protection against dry operation| | +| +| +

Information on the energy-related efficiency and energy consumption apply for smart operation.

Device Installation

The device must be installed in a frost-free room and as close as possible to the withdrawal point.
The device may only be installed and operated in a vertical position on vertical walls.
For mounting walls with a low load bearing capacity, e.g. lightweight construction walls, the installer must select a suitable mounting method with suitable screws (minimum diameter 8 mm) and dowels.
In rooms with a bath or shower, the device must be installed in accordance with the valid regulations according to VDE 0100 Part 701.

Fig. 1: Dimensions and mounting dimensions in mm

Mounting instructions

• Mount the drill template (packaging) in the designated installation position.
• Mark and drill the mounting holes for the wall bracket horizontally and insert the dowels. Mount the wall bracket, insert and tighten the screws.
• Hook in the domestic hot water cylinder.

Water connection

ATTENTION!
The regulations of the water supply company and DIN 1988 must be observed.

ATTENTION!
The maximum operating pressure specified on the rating plate must not be exceeded.

NOTE
The connection components (supply and drain pipes, safety assembly, etc.) must be selected so that all components can withstand the possible temperatures of approx. 130 °C in the event of a thermostat malfunction and consequential damage can therefore be avoided.

NOTE
In order to enable problem-free replacement of the domestic hot water cylinder in the event of after-sales service work, all connections must be detachable.

Water connection in the closed system

Closed domestic hot water cylinders and pipe systems, i.e. those under pipeline pressure, can supply  multiple tap points.

• The domestic hot water cylinder must be installed before the tap point (mixed battery / fitting).
• Only pressure-resistant fittings may be used.
• A type-tested safety assembly (see Fig. 2) in accordance with DIN 1988 must be installed in the cold water inlet.
• With a line pressure over 0.5 MPa (5 bar), a safety assembly with pressure reducer must be used.
• To guarantee unhindered drainage, the drainage siphon of the safety assembly must be installed tilted slightly downwards in a frost-free environment.
• If the water in the cylinder is heated, its volume expands. This means that the drain of the safety assembly starts to drip. The drain must therefore be open, i.e. must have no fixed connection to the pipe system.
• No isolating valves, constrictions or screens must be installed between the safety assembly and cylinder.
• A non-return valve must be installed that guarantees that water can not flow back from the domestic hot water cylinder into the water network.
• Before connection to the electric network, the domestic hot water cylinder must be filled with water.

1. Safety valve
2. Drain pipe safety assembly
3. Non-return valve
4. Drainage siphon
5. Test connections
6. Pressure reducer (optional)
7. Isolating valve

Fig. 2: Water connection in the closed system

Water connection in the open system

In pressureless flow operation, the water can only be withdrawn at one point.

• Only fittings for open domestic hot water cylinders may be used.
• This fitting is installed in the cold water inlet of the domestic hot water cylinder.
• A non-return valve must be installed that guarantees that water can not flow back from the domestic hot water cylinder into the water network.
• It is advisable to install a drain nozzle.
• Before connection to the power supply, the domestic hot water cylinder must be filled with water.
• If the water in the device is heated, its volume expands. This means that the drain pipe of the fitting starts to drip. This behaviour is related to the function. Excessive tightening of the two valves on the fitting can not prevent this dripping

1. Drain nozzle
2. Non-return valve
3. Isolating valve

Fig. 3: Water connection in the open system

Electrical connection

Notes on the electrical connection

The connection to the electric network must take place in accordance with the valid national regulations.

ATTENTION!
Disconnect from the power supply before working on the domestic hot water cylinder!

• In rooms with a bath or shower, the device must be installed in accordance with the valid regulations according to VDE 0100-701.
• A fault-current circuit breaker with a trip current of I rat = 30 mA must be installed in the electric circuit.
• There must be a disconnecting device upstream of the device with a distance of at least 3 mm. This requirement is met via circuit breakers, for example.

Connection via a wall socket takes place with a flexible connection cable, e.g. H05VV-F 3 x 1.5 mm² with protective conductor.
Protect the connection cable against twisting or pulling out with strain relief.

Fig. 4: Circuit diagram

Circuit diagram legend

1. Connecting terminal
2. 2-pole bi-metal safety limiter
3. Electronic controller
4. Radiator
5. Temperature sensor

L Phase conductor
N Neutral wire
PE Protective conductor

Commissioning

NOTE
Before connection to the electric network, the domestic hot water cylinder must be filled with water. During the first filling, open the drain valve on the fitting.

• Check the pipelines for leakage and repair leaks if necessary.
• Check the function of the safety assembly (in the closed system).
• Carefully open the domestic hot water valve to fill he domestic hot water cylinder until the water escapes without bubbles.
• Also open and flush the cold water valve.
• Switch on the fuse and the fault-current circuit breaker.
• Set the desired operating mode and temperature, see section “6. Operation”.

NOTE
Water may escape during the heat-up process. Via the safety assembly in the closed system, via the fitting outlet in the open system.

ATTENTION!
The safety assembly and domestic hot water fitting may get hot!

Operation

Operating elements and display

Fig.   5: Operating elements and display

Brief information on the domestic hot water cylinder functions

Key| Time| Function| Display A1 (bar)| Display A2 (LED green)
---|---|---|---|---
T1| 3 sec.| Device ON/OFF| Current temperature|
T1| Short| SettingCylinder temperature| Set temperature|
T2| Short| Smart memory On/off| | Lit

Switching the domestic hot water cylinder on and off

To switch on the domestic hot water cylinder, press the T1 button for at least 3 seconds. Display A1 signals the current temperature.
To switch off the domestic hot water cylinder, press the T1 button for at least 3 seconds.

Setting the water temperature

The bar display A1 shows the current water temperature (actual temperature).
To change the water temperature, tap on the T1 button until the desired temperature is displayed. The desired temperature (setpoint temperature) is displayed for approx. 5 seconds and then saved.
The current water temperature is then displayed permanently.

Adjustable temperatures:

The setting “e” is advisable for a domestic hot water temperature of approx. 57 °C. The limescale formation and heat losses are comparatively low in this case.
If the domestic hot water cylinder is not used for an extended period, it is advisable to set the control to the “frost protection” position. In this setting, the domestic hot water cylinder keeps the water temperature at around 10 °C. This setting prevents the stored water from freezing and thus protects the device from damage.

Smart mode (learning function)

This operating mode is recommended in particular in the event of repeated withdrawal cycles, e.g. the regular morning shower.
A recording function controls the domestic hot water temperature for the suitable time and enables extremely energy-efficient operation. The duration of the recording is 7 days.

Carry out the following steps to start the recording:

• Press the T2 button to start the recording. The recording function and the activated “Smart Mode” operating mode is indicated by the lit green LED (display A2). The setpoint temperature can not be changed during the recording.
• Pressing the T2 button again interrupts the recording or switches off the “Smart Mode” operating mode. The domestic hot water cylinder returns to the set manual operating mode and heats the water according to the set programme.
• The recording ends automatically after 7 days. The green LED (display A2) lights up. The recorded 7-day programme is then run permanently.
• The “Smart Mode” operating mode is activated by pressing the T2 button again. If the recording was not ended early, the recorded programme is run, otherwise a new 7-day recording starts.

If the consumption behaviour changes, a new recording must be started. The existing profile is overwritten after another recording period of 7 days.

Preventative thermal disinfection

If the water temperature in the cylinder is not heated over 65 °C over a period of 14 days, the preventative thermal disinfection switches the domestic hot water cylinder automatically to a temperature of 70 °C. This temperature is maintained for 120 minutes.

Draining the domestic hot water cylinder

If the domestic hot water cylinder is switched off and if there is a risk of frost, the device must be drained completely.

ATTENTION!
Disconnect from the power supply before working on the domestic hot water cylinder!

Drainage in the closed system

Close the isolating valve of the cold water inlet. Open the domestic hot water valves of the connected fittings. Switch the safety valve to “open”.
The remaining residual water can be drained off via the drain nozzle.

Drainage in the open system

Close the isolating valve of the cold water inlet. Open the cold and domestic hot water valve of the fitting. Vent the domestic hot water drain of the domestic hot water cylinder by loosening the connection. The remaining residual water can be drained off via the drain nozzle

Faults

NOTE
The unit can be reset by pressing the two buttons T1 and T2 simultaneously.

In the event of a malfunction, check whether the fuse or the fault-current circuit breaker have triggered. Notes on fault diagnosis can be found in the table below.

breakerContactafter-sales service
Repeated flashing 2x fast| ErrorTemperature sensor| Contactafter-sales service
Repeated flashing 3x fast| OverheatingWater temperature| Switch off the device and flush by opening the domestic hot water valve
Repeated flashing 4x fast| Water level Low, no water| Fill thewater cylinder

If the device can not be commissioned, notify aftersales service.

Maintenance

Regular service guarantees correct function and long service life of the domestic hot water cylinder. The first inspection should be carried out two years after the first commissioning by a specialist company or the plant after-sales service. The function of the safety assembly must be checked at regular intervals. Limescale deposits in the cylinder can not be avoided completely when the water is heated up. These can be removed by a specialist if necessary. The limescale quantity inside the domestic hot water cylinder depends on the water quality and the set domestic hot water temperature.

Checking the magnesium protection anode
Visual inspection: If 75% of the protection anode is used, the anode must be replaced. Measuring the anode current: Before carrying out the measurement, loosen the earth connection cable to the anode.
Measure the anode current between the cylinder and anode. If the anode current is < 0.1 mA, the protection anode must be replaced.
After checking the domestic hot water cylinder, the specialist will set the time for the next inspection based on the assessed condition.

Cleaning

Switch off the device before cleaning it. The surfaces of the domestic hot water cylinder can be cleaned by wiping down with a damp, soft cloth. Do not use any aggressive scouring powder, as this could damage the surface.

Conformity

The devices from the specified series comply with the following valid EU directives and applied standards:

2014/35/EU Low Voltage Directive
2014/30/EU EMC Directive
2009/125/EC Ecodesign Directive
2011/65/EU RoHS-II Directive
Standards:
EN 60335-1, EN 60335-2-21, EN 62233
EN 55014-1/-2, EN 61000-3-2, EN 61000-3-3
EN 50440
EN 50581

Warranty

This product is supplied with a two-year warranty according to our terms of guarantee.

Recycling

Do not dispose of the device with general household waste. Take the device to the available collection points at the end of its service life.

DE-20 2212/D www.dimplex.de

References

• Dimplex | Wir heizen, kühlen und lüften die Zukunft.

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