Vaillant thermocompact vu 282/1 e User Manual

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Vaillant thermocompact vu 282/1 e Specifications

General

Model	VU 282/1 E
NOx class	5
Max. heating temperature	85 °C
Ignition	Electronic
Fuel Type	Natural gas
Max. thermal output 80/60 °C	28 kW
Output	28 kW
Electrical connection	230 V, 50 Hz

Summary

2. Boiler Specification

2.1 Technical Data

Presents detailed technical specifications and performance data.

4. Boiler installation sequence

4.5 Mounting the boiler

4.7 Electrical installation

5. Commissioning

5.1 Preliminary electrical checks

Essential electrical checks before initial operation.

5.3 Filling the heating system

Instructions for filling the central heating system with water.

5.4 Initial system flush ('cold')

5.5 Initial lighting

Step-by-step guide for the initial ignition and lighting of the boiler.

5.6 Gas inlet working pressure

5.7 Main burner pressure

Information on measuring and adjusting main burner pressure.

5.9 Functional Checks

5.11 Final system flush ('hot')

6. Servicing

Procedures and requirements for routine servicing of the boiler.

6.1 Initial inspection

6.2 Routine maintenance

Tasks and procedures for routine maintenance of the boiler.

6.3 Re-commissioning the boiler

7. Parts replacement

Instructions and procedures for replacing various boiler parts.

7.2 Replacement of fan (fig. 53)

7.3 Replacement of air pressure switch (fig. 54)

Procedure for replacing the air pressure switch.

7.4 Replacement of burner

7.5 Replacement of electrodes

Steps for replacing the ignition and flame sensing electrodes.

7.6 Replacement of NTC temperature sensor

7.7 Replacement of gas valve

Instructions for replacing the boiler's gas valve.

7.7.1 Replacement of modulating regulator

7.8 Replacement of main heat exchanger

Procedure for replacing the main heat exchanger unit.

7.9 Replacement of expansion vessel

7.10 Replacement of transformer

7.11 Replacement of overheat thermostat

Procedure for replacing the overheat thermostat.

7.12 Replacement of pump

7.13 Replacement of automatic air release

7.14 Replacement of automatic bypass

7.15 Replacement of pressure and temperature gauge

7.16 Replacement of differential pressure switch

7.17 Removal of printed circuit boards (PCBs)

7.17.1 Replacement of switch and control boards

8. Fault finding

8.2 Logical fault finding procedure

8.2.1 Preliminary Checks