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Thermex ER serie Manual

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waterproof items exposed to water under the EWH. When placing the EWH in unprotected premises,
it is necessary to install a protective tray (not included in the EWH supply package) under the EWH
equipped with drainage into the sewage system.In case EWH is installed in places that are difficult to
access with a view to perform technical and warranty maintenance (mezzanines, alcoves, ceiling
void, etc.), the EWH shall be installed and dismantled by the customer independently or at his/her
own expense.
Connection to the water supply system
It is necessary to supply cold water to the EWH using a pre-treatment filter with a
purification degree of at least 200μm.
Install the relief valve (16) shown in Fig. 1 at the cold water inlet (20) – the pipe with a blue ring, for 3.5-
4 turns and ensure the connection tightness with any sealing material (flax, thread-fill tape, etc.).
When the water heater is operating, water can leak from the relief valve outlet pipe to relieve
excessive pressure, which occurs for the purpose of ensuring the water heater safety. The discharge
pipe shall remain open to the atmosphere and be directed downward constantly. It is advisable to
attach a rubber or silicone tube of the appropriate diameter to the drainage hole with a view to drain
water. It is necessary to drain a small amount of water regularly (at least once a month) through the
relief valve discharge pipe into the sewage system to remove calcareous sediments and to check
valve efficiency.
The handle (17) is designed to open the valve (18). Make sure that during the operation of the water
heater this handle is in the position preventing water from being drained from the tank.
The connection to the plumbing system shall be made in accordance with (Fig.1) using copper/plastic
pipes or special flexible plumbing designed for a temperature of at least 100°C at the maximum
operation pressure. It shall be forbidden to use flexible connectors used in the past. Plumbing and
locking accessories shall be in line with the parameters of the water supply network and have the
necessary quality certificates. During installation, do not use excessive force to avoid damage to the
pipe threads, as well as the glass and porcelain finish of the inner tank.
CAUTION! It shall be forbidden to use the EWH without a relief valve or use a valve
made by other manufacturers.
After connecting the EWH, make sure that the cold water shutoff valve in the EWH (23) is open and
the hot water shutoff valve (24) is closed. Open the cold water inlet faucet in the EWH (21), the hot
water outlet faucet from the EWH (22) and the hot water faucet on the mixer to allow air to flow out of
the EWH. When the EWH has been filled in full, water will flow from the mixer faucet in the form of a
continuous stream. Close the hot water faucet on the mixer, check the flange for leaks and, if
necessary, tighten the bolts.
When connecting the EWH in places not equipped with running water, it is acceptable to supply water
to the EWH from the auxiliary reservoir using a pump station, or from a reservoir placed at a height of
not less than 5 meters from the top of the EWH.
Connection to the power supply network
Before switching on the heater, make sure that its parameters are in line with the technical character-
istics of the water heater.
CAUTION! Before switching on the power supply, make sure that the EWH is filled with
water!
The water heater shall be grounded to ensure its safe operation.
The EWH is equipped with a regular power cord with or without a europlug and an residual current
device (optional). The electrical socket shall have a grounding terminal with a ground wire supplied to
it and be located in a place protected from moisture or meet the requirements not lower than IPX4.
It is important to constantly monitor the EWH after the initial powering. In case of any parameter
mismatch (heating, temperature, indication, thermostat failure), contact the maintenance depart-
ment.
Maintenance
Periodic maintenance and timely replacement of the magnesium anode are indispensable conditions
for the long-term operation of the EWH. Failure to comply with these requirements is the basis for
withdrawing the EWH from warranty service. Maintenance and replacement of the magnesium
anode are not included in the manufacturer's and the seller's warranty liabilities.
During maintenance, the check is performed with respect to the condition of the magnesium anode
and the presence of scale on the THE. Simultaneously, the sediment is removed, which may
accumulate at the bottom of the EWH.
The magnesium anode shall be replaced at least once a year. If water contains a large number of
chemical impurities, the magnesium anode shall be replaced every six months. The formation of
scale on the heating element may lead to its failure, which is not a warranty case, and its replacement
is not included in the manufacturer's and the seller's warranty liabilities.
If there is some scale on the heating element, it can be removed with the use of descaling agents or
mechanically. When removing sediment from the EWH, do not apply excessive force and use
abrasive cleaners to avoid damaging the protective coating of the inner tank.
The first maintenance procedure is particularly important, because the intensity of the formation of
scale and sediment and the consumption of magnesium anode serve as the grounds for determining
the timing of subsequent maintenance, which in turn provides an opportunity to extend the EWH life
cycle. If the above requirements are not fulfilled, the EWH life cycle is shortened, the probability of
EWH failure increases, and the warranty liabilities are terminated.
To carry out maintenance and replace the magnesium anode, one shall perform the following
steps:
Power off the EWH;
џ
Allow hot water to cool down or use it through a mixer;
џ
Block the flow of cold water into the EWH;
џ
Unscrew the relief valve or open the drain valve;
џ
Put the rubber hose on the cold water inlet pipe or on the drain valve by directing its second end into
џ
the sewage system;
Open the hot water faucet on the mixer;
џ
Drain the water from the EWH through the cold water inlet or drain valve;
џ
Remove the protective cover, disconnect the wires, unscrew and remove the removable flange
џ
from the casing;
18 19
ENEN
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