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9
CONNECTION OF A COMBINED HEATER
It is recommended to install stop valves on the heating water inlet and outlet (for possible
dismantling of the heater).
The valves have to be as close to the heater as possible to avoid higher thermal losses.
In combined versions, the stop valve on the inlet to the exchanger has to be closed at the
inlet to the tubular heat exchanger while heating using el. energy, which prevents heating
water in the hot water heating system.
In the case that the heat exchanger isn’t utilised, it is necessary to leave the plastic stoppers
on the outlets of the heater (from manufacturer), so that air doesn’t circulate in the heat
exchanger’s spaces.
10
ELECTRIC WIRING
Connection, repairs, and wiring inspections may only be implemented by a person authorised
to such activity. Electric installation must comply with valid electro-technical standards.
Connection to electric network shall be executed only after the plumbing has been installed.
Elements for disconnection from the electric grid must be built into the fixed electric grid
distribution that contains separation of contacts in all positions.
Electric installation must follow and meet the requirements and regulations relevant in the
country of use.
Connecting the LX ACDC/M+K(W) A,B,C heater facilitates the connection of two inlets and one
outlet. The outlet is meant for direct current.
To control photovoltaic supply, the system has to be connected to the power grid from the
nearest continuous supply (socket), into 230V clamps: L, N and PE.
The following safety elements are recommended for installation of photovoltaic
system:
1) SPD type 1 lightning diverter (e.g. SLATEK FLP-500 PH V/2, FLP-500 PH V/25)
2) Direct current circuit breaker (e.g. Moeller X pole PL7-C16/2-DC). This circuit breaker
must be designed according to the characteristics of the panels.
The maximum value of
protection is stated by the manufacturer in the parameters of the photovoltaic panels.
