Maintenance (Authorized Personnel); General Warnings; Boiler Inspection - PENSOTTI PNCC-32N Instruction Manual

6. MAINTENANCE

6.1 General Warnings

All maintenance operations must be carried out by professionally qualified personnel, authorised by
Granby/Pensotti LLC.
The frequency of boiler maintenance must comply with current law and, nevertheless, should be carried out
once a year.
In order to guarantee the long life of the appliance and in accordance with the current gas safety regulations,
only use original spare parts
Before carrying out any type of maintenance operation, disconnect the appliance from the mains electricity
supply and close the gas valve.

6.2 Boiler inspection

In order to ensure that the boiler operates efficiently and safely, it is required that the appliance is inspected by a suitably
competent technician at least once a year.
The following is a minimum recommendation of service that should be carried out annually
■ Check the condition of the gas seals and replace where necessary.
■ Check the condition of the water seals and replace where necessary.
■ Visually inspect the condition of the combustion chamber and flame.
■ Remove and clean any oxidation from the burner.
■ Check that the seal of the room-sealed chamber is undamaged and positioned correctly.
■ Check the primary heat exchanger and clean if necessary using a soft nylon brush and subitle vacum
■ Check the condition and operation of the ignition and gas safety systems.
■ Remove and clean the scaling from the ignition and flame detection
electrodes, paying particular attention to place them at the correct distance
from the burner. Fig 1.
■ Check the pre-fill pressure of the integral expansion tank
■ Check the presence of air intake/permanent ventilation openings correctly
sized according to the boiler installed and in respect with current law.
■ Check the integrity and operation of the flue gas exhaust system.
■ Check the integrity of the gas piping system.
■ Check that the connection to the electricity supply complies with that reported
in the boiler's instruction manual.
■ Check the electrical connections inside the control panel.
■ Check Fernox inhibitor integrity
■ Check and clean if necessary the dirt separator
■ Check for and remove any combustible or flammable materials that are in the
vicinity of the boiler
■ Lubricate the 3-way valve using a TPFE aersol lubricant. Fig 2
■ Check Relief Valve or proper operation
■ Check the maximum and minimum modulation pressures and the modulation itself.
■ Check that the combustion is correctly regulated and if necessary make
adjustments according to section 4.4 "Starting the boiler".
■ Check all heating safety systems. Ex; termpeature saeftly limit, air pressure switch,
flame failure, etc.
INSTALLATION INSTRUCTIONS
(authorized personnel)
Fig 1.
Fig 2.
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