Unical PELLEXIA 80, Instructions For Installation, Use And Maintenance Manual

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3.14 - BOILER START-UP
Have all the hydraulic and electrical systems and the safety devices been connected in compliance with the
domestic and local laws in force
?
Are the expansion vessel and the safety valve (when applicable) connected correctly and cannot be shut off?
Are the bulbs of the operating, safety, minimum thermostats and that of the thermometer inserted in their conduits?
Are the control and safety devices working and confi gured correctly?
Are the refractory coverings intact?
Is the grate of the burner installed correctly?
Are the combustion air intake line and the fl ue gas evacuation line compliant with the applicable standards in force?
Are the mains voltage and frequency compatible with the burner and the electrical equipment of the boiler?
Is the system full of water and does not contain any air?
Are the drain valves closed and the system cut-off devices fully open?
Is the outside main switch ON?
Is the pump/are the pumps working correctly?
has the system been checked for water leaks?
Are the ventilation conditions and minimum distances to perform any maintenance guaranteed?
Has the operator been trained and has the documentation been supplied?
3.14.1 - PRELIMINARY CHECKS
Commissioning must be done by profession-
ally qualifi ed personnel. Unical will not be
held liable for damage to persons, animals
or objects due to failure to comply with the
above instruction.
Please tick the operations performed
The preliminary checks must be carried out by the company
who installs the system.
After connecting the hydraulic and electrical system and the fuel
line to the boiler, and before starting up the boiler,
it is advisable
to check the following:
I
Correct connection of the probes:
Extension of the probe cable or connection of the probe cable
together with or in the vicinity of other live cables can cause
induced electrical noise, which can affect the effi ciency of the
probes and result in incorrect temperature readings. To avoid in-
stability, the probes must, therefore, be connected using shielded
cables even with double central conductor.
The following drawing specifi es that the central pole of the
shielded cable must be connected to the odd number terminal
while the braid shield of the cable must be connected to the
even number terminal.
This is how the probe line is shielded.
YES NO
SHIELDED CABLE
PROBE
Insulating dielectric
Braid pole (shielding) at odd
terminal
“+” Coaxial cable pole or shielded cable
at odd terminal