PENSOTTI PCI 18, Инструкция по эксплуатации

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INSTALLATION INSTRUCTIONS
57
Primary heat exchanger (see fig. 1)
Close the shut-off valves and drain the central heating
circuit of the water heater;
Switch off the power and gas supply to the water
heater;
Remove and dismantle the entire burner unit (see
“Cleaning the condensation module and burner unit”);
Remove the gas valve;
Remove the spring and then the condensate drainpipe;
Remove the fixing springs and then the delivery and return
pipes;
Remove the support brackets and pull out the heat
exchanger;
Remove the regulation sensor from the old heat exchanger
and refit it together with the two condensate drainpipes to
the new one;
Replace the heat exchanger and re-assemble the
components following the above procedure in reverse
order;
Switch on the electricity, water and gas supplies and fill the
system with water. Check for any leaks from the
joints and bleed off any air from the circuit.
Restart the water heater, making sure that there
are no gas leaks;
Expansion vessel (see fig. 2)
Close the shut-off valves and drain the central
heating circuit of the water heater.
Use a 19 mm spanner to unscrew the pipe
coupling to the vessel.
Unscrew the fixing screws and remove the upper
mounting bracket. Remove the expansion vessel
from the left side of the water heater.
Replace the expansion vessel and re-assemble
the components following the above procedure
in reverse order.
Switch on the electricity, water and gas supplies
and fill the system with water. Check for any
leaks from the joints and bleed off any air from
the circuit;
primary
heat
exchanger
flue
connection
chamber
stainless steel
pipe
coil
ceramic fibre
washer
Fig. 1
Fig. 2
expansion vessel
expansion
vessel pipe