Technical Description - Eldom Invest DU060 Montage-, Betriebs- Und Wartungsanleitung

EN

TECHNICAL DESCRIPTION

Your water heater is intended for domestic use and can provide heated
water from the main water supply line to a number of consumers at the same
time – kitchen, bathroom, etc.
The water used for heating should correspond to the regulatory documents
on domestic water and particularly: chlorine content must be less than 250
mg/l; electrical conductivity must be greater than 100 µS/cm, and pH must
be within 6.5-8 for water heaters with enameled water tanks; electrical
conductivity must be less than 200 µS/cm for water heaters with tanks of
chrome-nickel steel. Water pressure in the water supply installation must be
higher than 0.1 МРа and less than 0.5 МРа. In the event that the water
supply pressure is higher than 0.5 МРа, please refer to the
recommendations described in the section concerning water connections.
The appliance has two tanks and two heating elements that are intelligently
controlled by the electronic control unit.
Water tanks of the appliances are protected against corrosion with the help
of high-quality enamel coating or are made of high alloy chrome-nickel
(corrosion-resistant) steel. Enameled water tanks have built-in anodes of
special alloy for further protection.
The casing of appliance is made of steel with epoxy-polymer coating and
their thermal insulation is made of CFC-free polyurethane foam.
Schematic design and technical data of basic models and modifications are
shown in Fig. 1-2 and in the table. All figures and tables can be found at the
beginning of this booklet.
Models of water heaters and their modifications are designated with letters
and digits as follows:
The first two letters and the following three digits indicate the basic
џ
model of the appliance.
„D" – appliances are designed for wall mounting.
џ
„U" – water heater for universal mounting, either in a vertical or
џ
horizontal position.
„V" – water heater for vertical mounting position.
џ
xxx – first three digits after the letter „U"/„V", code of water heater
џ
capacity.
„I" – appliance's water tanks are made of high alloy chrome-nickel
џ
steel.
„D" – the water heater has built-in heating elements that heat water
џ
indirectly. This helps to improve the appliance safety and increases
the corrosion resistance.
„W" – The water heater's electronic control unit has a WiFi module.
џ
Hot and cold water pipes have indicative color markings, blue and red
respectively.
The exact and complete model number, declared performance parameters
and serial number of your water heater are printed on the plate attached to
the unit.
Water heaters are intended to be fitted either vertically (Figure 1) or
horizontally (Figure 2), except for models with 'D' letter after the basic model,
which can be only mounted in a vertical position.
WARNING! When the unit is mounted in a horizontal position, hot and
cold water pipes and electrical parts MUST be on its left side, see Figure
2. Non-observance of this obligation will render the appliance dangerous
whereby the manufacturer and/or retailer will not assume any liability for
adverse consequences and damages!
WALL MOUNTING OF THE WATER HEATER
The water heater should only be installed in premises with normal fire safety
where the temperature is always higher than 0 °С. The floor of the premises
must be fitted with a floor drain of the sewage water system, as it is possible
for water to leak from the safety valve port during normal use of the water
heater. The floor drain will facilitate the unit maintenance, inspection and
service, whenever it is necessary to drain water from the tank.
The location of the water heater should be selected according to the wall
type and material, appliance dimensions, fixing method, arrangement of
fixing elements and pipes, degree of protection against ingress of water. The
latter is indicated on the serial number plate. The appliance must be
installed in a place where it will be prevented from water sprays and
splashing. To reduce heat losses, it is desirable to minimize the distance
between the water heater and premises where hot water will be used.
If your water heater has a factory fitted power supply cord combined with a
plug, the appliance shall not be installed in wet rooms! The appliance
location must comply with the requirements of for electrical installation and
its socket. Refer to the section concerning electrical connections herein.
It is mandatory to allow a clearance between the appliance and surrounding
walls and ceiling:
When the water heater is mounted vertically – at least 70 mm between
џ
the appliance and the ceiling; at least 50 mm between the appliance
and the sidewall; at least 600 mm under the appliance to facilitate
maintenance operations and repairs.
If the water heater is mounted horizontally on the wall in the room – at
џ
least 70 mm between the appliance and the ceiling; at least 70 mm
between the side (no leads) and the wall; at least 350 mm between the
plastic cover with electrical parts and the wall to facilitate maintenance
operations and repairs. Under the unit, there should be enough space
to drain water from the water heater.
The water heater shall be rigidly mounted to the wall. Steel bolts should
(studs) with a diameter of 10-12 mm be used, securely fixed into the wall.
Fixing elements must be secured against pulling aside the wall, they need to
be anchor bolts or through bolts (depending on the wall material). It is
necessary that the fixing elements intended for the water heater have a
bearing capacity of three times the total weight of the appliance with water in
it. Appliance installation on decorative walls (made of single bricks or of
other light materials) is prohibited. Figure 1 and the table show the
necessary distances between bolts (studs) for suspension of appliances.
WARNING! Support brackets for a horizontally mounted water heater
should be securely fixed to the wall of the room. Washers should be
placed under the bolt heads (tenon nuts)!
WARNING! Water heaters with heating elements that heat water
indirectly could only be mounted in a vertical position! The
manufacturer and/or retailer shall not be liable for losses, damages
and other circumstances resulting from improper installation,
which will also render the product warranty invalid!
WARNING! Non-observance of the requirements for fixing the water
heater to the wall may cause damages to the appliance, other
appliances and the room where the appliance is located, corrosion of the
casing or even more serious failures and damages. In such cases,
damage is not subject to warranty obligations of the retailer and
manufacturer, and will be borne by the party who did not observed the
requirements of these instructions.
Installation of the water heater on the wall of the premises should only be
performed by qualified persons.
WATER HEATER CONNECTION TO THE WATER
SUPPLY NETWORK
The water supply system to which the water heater will be connected, as
well as other elements included, should resists continuously at water
temperatures above 80 °C, and above 100 °С for a short time; they should
also be capable to withstand a pressure at least twice the working pressure
of the appliance.
Upon connection of the water heater to the water supply system, the
indication rings around the cold and hot water pipes (inlet and outlet pipes)
of the water heater should be observed. The cold water pipe is indicated with
blue color, and the hot water pipe is indicated with red color. See Figure 1.
Pipes of some appliances are additionally labelled. These are with threading
1/2".
A diagram showing the connection of the water heater is shown in Figure 3.
Under this diagram, the water heater operates at the pressure of the water
supply line and of the safety valve. If the water-supply line pressure is
greater than 0.5 MPa, it is mandatory to install a pressure-reducing valve
(reducing valve). If local regulations stipulate the use of additional devices
that are not supplied with the appliance, they need to be purchased and
installed in accordance with the requirements.
The water heater is equipped with a combined non-return-safety valve. The
latter is located in the packaging of the appliance and MUST OBLIGATORY
be mounted on the cold water pipe. During that installation the arrow on its
hull showing the direction of water flow through the valve must be followed.
WARNING! The absence or improper installation of the combined valve
supplied with the product is grounds for voiding the product warranty.
WARNING! It is FORBIDDEN to install any kind of shut-off fittings
between the combined valve and the water heater! It is absolutely
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