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Comparison Atlantic OPro+ VM 050 D400-1-M vs Atlantic OPro Slim PC 50

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Atlantic OPro+  VM 050 D400-1-M
Atlantic OPro Slim PC 50
Atlantic OPro+ VM 050 D400-1-MAtlantic OPro Slim PC 50
from $89.16 up to $89.24
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from $109.60 up to $131.52
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Typestoragestorage
Energy sourcemainsmains
Installationverticalvertical
Tank volume50 L50 L
Tank shapecylindricalslim
Technical specs
Power source230 V230 V
Energy efficiency classCC
Power consumption2000 W2000 W
Max. water temperature65 °C65 °C
Tank liningglass ceramicsglass ceramics
Water supplywith pressurewith pressure
Heating time
90 min /when heated to 50°C/
96 min
Magnesium anode
Heating elements11
Heating element type
wet heater
wet heater
Features
Functions
thermostat
thermostat
Safety systems
overheat protection
safety valve
overheat protection
safety valve
General specs
Controlsmechanicalmechanical
Controls layoutbottombottom
Pipe connectionbottombottom
Tank manufacturer's warranty5 years
Dimensions (HxWxD)
58.2x43.3x45.1 cm /weight — 17 kg/
91.8x33.8x34.5 cm
Weight17 kg
Added to E-Catalogjune 2012december 2008

Tank shape

The shape of the water heater.

The traditional options are cylindrical and rectangular, but nowadays there are more specific options — flat cases, slim cylindrical devices. Here are the features of each of these options:

— Cylindrical. This form is traditional for storage water heaters. It is because with the same total volume, less material is needed for a cylindrical tank than for a rectangular one; and in production, such tanks are simple and cheap, which allows them to be used in water heaters of any price category. The disadvantages of this form include, first of all, some bulkiness in comparison with other options.

— Rectangular. The case is rectangular in shape, with pronounced front and side faces; the corners can be both sharply defined and rounded. It is the traditional form for instant water heaters, primarily gas, but it can be found in a fairly large number of storage models. Accordingly, the features of a rectangular case will be different — depending on the type of heater. So, in instant water heaters, the “rectangle” is simply one of the most convenient options in terms of the overall layout. But in storage water heaters, this shape differs from the flat one (see below) only with a slightly greater thickness and, in some cases, pronounced angles.

— Flat. A variant found mainly in s...torage electric heaters. Such devices look as if the classic cylindrical body was flattened at the back and front, reducing its thickness by increasing the width (and sometimes height). Thus, such a boiler does not protrude as much in front of the wall as a cylindrical one; in some cases, this point may be fundamental — for example, when installed in a bathroom, where a cylindrical device would hang over the toilet bowl, creating discomfort.

— Slim. A variety of cylindrical cases are characterized by a reduced diameter. In other words, boilers from this category are also round, but with the same volume, they have a noticeably smaller width and thickness than traditional cylindrical ones. In cramped conditions, this can be very useful. However, it must be borne in mind that the price for reducing the diameter is an increase in height.

Heating time

Time to heat the storage tank (see "Type"), filled with cold water, to operating temperature.

It is worth remembering that this characteristic is not 100% accurate. Manufacturers usually indicate the heating time for certain conditions: a filled tank, maximum heating intensity, and temperature rise (∆T) by a certain number of degrees. In practice, the heating time may differ, both one way and the other. For example, if the heating time for the device is 20 minutes at ∆T = 50 °C, then when the water is heated from 15 °C to 60 °C, the time will be shorter (∆T = 45 °C). Nevertheless, this indicator allows us to evaluate the overall flow rate of the boiler, and with equal ∆T and volumes, different models can be compared in terms of heating time.

Tank manufacturer's warranty

The warranty period declared by the manufacturer for the storage water heater tank (see “Type”).

This parameter is important for the reasons of maintenance terms. The tank is the most complex element: other parts of the water heater are relatively easy to repair and change, and if there is a problem with the tank, it is often easier to replace the entire boiler. In the most advanced models, the warranty on the tank can be 10 years or more.

Weight

The weight of the device, excluding the water collected (passing) into it.
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