Centrometal Bio-Tec 25 Manual técnico - Página 13

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Electric connection, boiler start up

Scheme 4. - Electrical connection of a ordinal terminal on the boiler

ordinal terminal

N N L

N L

W W

Supply

Fan

Relay output

230V

max. 216 W

01-05 - Sensors

01 - Boiler sensor

02 - Flue gases sensor

03 - First accumul.-upper sensor

04 - Sanitary water tank sensor

05 - Last accumul.-lower sensor

9.0. BOILER START UP

Boiler must not be used in flammable and explosive environment. It must not be

used by children or disabled persons (either physically or mentally), as well as by

person without knowledge or experience, unless they are under control or trained

by s person responsible for their safety. Children must be supervised in the vicinity

of the product. Protective gloves must be used (Image 9). Fuel with max. 25%

moisture content may be used.

Before starting up it is necessary to check following:

- if the boiler is connected to the central heating system throught one or more water

accumulator/s, through the appropriate pump/s and 3-way thermic valve like

ESBE VTC 512 (maintains minimum temperature of return water into the boiler

above 60°C), VTC 531 (maintains minimum temperature of return water into the

boiler above 60°C), LTC 141 (keep minimal temerature of return water into the

boiler above 60°C) or Laddomat 21 (maintains minimum temperature of return

water into the boiler above 63°C) according to this manual.

- if the fresh air access to the boiler room is available (Point 4.0).

- if the boiler and the whole system are properly filled with water and airvented.

- if the safety elements are properly connected and are functioning perfectly:

- closed central heating systems should have safety valve of max. 2,5 bar, thermal

safety valve and expansion vessel of min. volume which is not less then 10% of the

total water quantity in the system.

- open central heating systems should have an open expansion vessel of min.

volume which is not less then 7% of the total water quantity in the system situated

enough over the level of the highest radiator in the system and insulated, if it is

mounted outside of heated space.

- if the mobile elements of the boiler are properly positioned:

- sheet metal protecting cover (ZL-page 3) have to be fixed to the carriers in the

upper combustion chamber.

ordinal terminal

1 2 3 4 5 6 7 8 9 10 111213141516

Room thermostat

1 2 3 4 5

Room thermostat

Technical manual Bio-Tec

Connection to the closed central heating system

Scheme 2.1. - Closed central heating system with 3 or more water accumulators

1 - Boiler Bio-Tec

2 - "CAS" water accumulator

3 - 3-way thermic valve ESBE VTC 512, (maintains

minimum temperature of return water into the boiler

above 60°C), VTC 531 (maintains minimum temperature

of return water into the boiler above 60°C), LTC 141

(maintains minimum temperature of return water into

the boiler above 60°C) or Laddomat 21 (maintains

minimum temperature of return water into the boiler

above 63°C)

4 - Manual 3-way mixing valve

5 - Room thermostat (included into basic delivery)

6 - Heating circuit

7 - Expansion vessel for closed systems

(approx. 10% of the total volume of installation)

8 - Sanitary water accumulator

(SKB-Digi/LKB-Digi/TB/STEB)

9 - Pump 1 - boiler pump

10 - Pump 2 - heating pump

11 - Pump 3 - hot sanitary water pump

12 - Thermal safety valve

13 - Safety-airvent unit

bar

Technical manual Bio-Tec