Thermex Praktik 100 V [21/52] Operation and maintenance

When choosing the place of installation total weight of EWH filled with water shall be taken into

account. Walls and floor with low carrying capacity should be strengthened accordingly. When drilling

(making) holes in the wall, regard is to be had to cables, ducts and pipes in the wall. EWH is

suspended with casing on anchor hooks fixed in the wall.

Hooks mounting on the wall shall exclude spontaneous movement of EWH brackets along them. To

perform maintenance and servicing of EWH the distance from the protective cover to the nearest

surface in the direction of removable flange axis shall be at least 0,5 m.

In order to avoid damage of the user's and/or third parties' property in the event of a faulty hot water

system, it is required to install EWH in spaces with waterproofing and drainage to the sewers, and in

Cold water shall be supplied to EWH using pre-filter with water treatment level not less

than 200 µm.

Install pressure relief valve (17) at the cold water inlet (21) tube with the blue ring, with 3,5 – 4

revolution, ensuring junction tightness with any sealing material (flax, FUM tape, etc.).

During water heater operation water may leak out of the exhaust outlet pipe of the safety valve to

relieve excessive pressure, which is made for the purpose of water heater safety. This outlet pipe shall

remain open to the atmosphere and be installed constantly down and in a non-freezing environment.

It is recommended to attach to the drain hole a rubber or silicone tubing of appropriate diameter to

drain moisture. It is required regularly (at least once a month) to discharge a small amount of water

pipes or special sanitary flexible conduits designed for temperature up to 100° C at the maximum

working pressure. Do not use used flexible pipes. Plumbing pipes and fittings shall conform to the

parameters of the water supply network and have the required quality certificates. Excessive efforts

are not allowed when mounting in order to avoid damage to pipe threads, glass-porcelain coating of

inner tank.

ATTENTION! Do not operate EWH without safety valve or valves made by other

manufacturers.

After having connected EWH make sure that cold water shut-off valve in EWH (24) is open and hot

water shut-off valve in EWH (25) is closed. Open the EWH cold water inlet valve (22), hot water inlet

water will constantly flow from tap faucet. Close the hot water tap on faucet mixer, check the flange for

leaks and, if necessary, tighten the bolts.

When connecting EWH in places not provided with water mains it is allowed to supply water to EWH

Before connecting of water heater to power supply, make sure that its settings

correspond to specifications of the heater.

ATTENTION! Before switching on power supply, make sure that EWH is filled with water!

Water heater shall be earthed to ensure its safe operation.

Water heater is equipped with a standard power cord with euro plug and RCD (option). Power

outlet shall have grounding contact with earthing wire and be in a place protected from

moisture, or meet requirements not less than IPX4.

Operation and maintenance

Control panel has power selection keys (11) Fig. 1 with integrated indicators.

EWH model

In the course of EWH operation user can adjust heating water temperature using temperature

adjustment knob ( ) located on the protective cover. By turning the knob anticlockwise (up to 10 Fig. 1

the stop) EWH is disconnected from the power, by turning in a clockwise direction the temperature

slowly increases up to +74° c (± 5° C).

When conducting EWH maintenance presence of scum on heating elements is checked. At the same

time residue that may be formed at the bottom of the EWH is removed. If there is scum on THE, then it

can be removed using special detergents or mechanically. It is recommended to hold the first

technical maintenance after a year from the time of connection by experts of a specialized

organization and depending on intensity of scale and residue to determine intervals of follow-up

maintenance. This action will extend the maximum EWH service life.