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2.4 electrical installation
Connect the power cord
Before installation, the user shall establish a power supply device, which shall be equipped with the
main power switch of heating, protection equipment and other modifications to the home wiring,
including initial modification and application for electricity charges.
The casing used for wire connection, voltage regulator input and HDO, and possible cascade
interconnection (with small package parts attached) is located in the lower left corner of the bracket
(see above). In addition, external protection terminals should be installed (brass bolt M6).
Before installing the protection bolt, the sides and outside of the cabinet must be cleaned, and all the
places near the bolt will be unrestricted to the metal surface. Under the head of the inside of the
cabinet, use the end of the cable terminal to connect the protection wire. A brass nut with a lock
washer is tightened from the outside. Use another nut to connect to the second protection line.
After connecting the power cord, it is necessary to check whether the nuts of all power terminals and
contactor are properly tightened.
Simple and complex control elements, such as programmable (daily or weekly program) and indoor
regulators, can be purchased at the manufacturer and its contractual partners of the electric heating
boiler. In order for the electric heating boiler to work correctly, it is absolutely necessary to have the
regulator of the belt voltage output, which means that no external voltage should be supplied. The
required regulator output contact load capacity 230/0.1. An indoor regulator with no voltage output is
connected to PR1 and PR2 terminals.
indoor thermostat and remote control.
Note: indoor thermostat contacts must be clean. The output voltage 220V May damage the electronic
circuit. When installing day or week program indoor thermostat or time switch, should avoid to use the
device switch contact to switch on the power, they should be according to the device type by power
supply or batteries to power.
The designer must consider comprehensively the suitability assessment for the combination of
external equipment to remove power level boilers. Consideration must be given to boiler
functions related to households or houses and external equipment mentioned. The
manufacturer shall not be liable for any improper installation of the design.
1.Three - way connecting terminal
2.Water tank NTC connecting terminal
3.Indoor temperature controller connecting terminal
4.outdoor temperature controller connecting terminal
figure 7
