Riello Residence Condens IS n, Installer And User Manual

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Residence Condens IS n
8
In any case, the maximum lengths declared in the booklet are
guaranteed, and it is essential not to exceed them.
Component Ø 60 Linear equivalent in metres Ø80 (m)
Bend 45° Ø 60 5
Bend 90° Ø 60 8
Extension 0.5m Ø 60 2.5
Extension 1.0m Ø 60 5.5
Extension 2.0m Ø 60 12
3.11 Installation of collective positive pressure smoke pipes
The collective smoke pipe is a flue gases system suitable for col-
lecting and expelling combustion products of several appliances in-
stalled on different floors of a building (fig. 26).
The collective positive pressure smoke pipes can only be used for
type C condensing appliances. Consequently, configuration B53P/
B23P is prohibited.
The installation of the boiler on collective pressure smoke pipes is
only allowed at G20, adopting a specific check valve, available as an
accessory, to which to refer to for the assembly process.
The boiler is dimensioned to function properly up to a maximum pres-
sure inside the smoke pipe not greater than the value indicated in the
"Technical data" table.
Once the check valve has been fitted (fig. 27), proceed with the r.p.m.
adjustment of the fan as shown in paragraph "Adjustments".
Make sure that the air suction and combustion fumes discharge
pipes are sealed.
The installation of the check valve requires the application of the
CAUTION label, supplied with the accessory, on a visible part of the
boiler casing. The application of the label is essential for safety pur-
poses during the maintenance or replacement of the boiler and/or
collective smoke pipes.
WARNINGS
The manufacturer assumes no liability if the check valve and
related label is not installed before the commissioning of the
boiler.
Appliances connected to a collective smoke pipe must all be of
the same type and have equivalent combustion characteristics.
The number of appliances that can be connected to a collective
positive pressure smoke pipe is defined by the designer of the
smoke stack.
MAINTENANCE FOR APPLICATION IN A COLLECTIVE
PRESSURIZED SMOKE PIPE
During the scheduled maintenance of the appliance, control also
the efficiency of the check valve to ensure the correct operation and
safety of the system. Before proceeding with maintenance, perform
a products of combustion analysis and check the operating condition
of the boiler.
If performing maintenance to the combustion circuit of the boil-
er (flue gas pipes, heat exchanger, condensate trap, burner,
electrode conveyors, fan) it is necessary to ensure the closure
of the flue gases pipe coming from the pressurised smoke pipe
and check for leaks.
Subsequently (fig. 28-29):
- Switch off the electrical supply by turning the system's main switch
to "Off".
- Close the gas shut-off valve.
- Remove the connections cover and the casing.
- Undo the fixing screws of the control panel.
- Disconnect the control panel and then rotate it forward.
- Disconnect and remove the air distribution box cover.
- After unscrewing the fixing screws, remove the right side of the air
distribution box.
- Unscrew the gas valve train fixing nut to the air distribution box.
- Unscrew and remove the mixer connection gas train (A).
- Remove the electrical connections of the ignition electrodes and
flame detection and the electrical connections of the fan.
- Unscrew the 4 screws that fix the air gas conveyor to the main heat
exchanger (B).
- Remove the conveyor-fan assembly (C) from the heat exchanger,
being careful not to damage the burner insulation panel.
- To access the check valve, remove the fan by unscrewing the 4
screws (D) to the conveyor.
- Make sure there are no foreign material deposits on the membrane
of the check valve and if any remove them and checking for damage.
- Check the correct opening and closing operation of the valve.
- Reassemble the components in reverse order, making sure the
check valve is put back in the correct direction (see fig. 29).
Failure to comply with the above can lead to the abnormal func-
tioning of the check valve and the consequent diverse perfor-
mance of the boiler until its failure.
Failure to comply with the above may compromise the safety
of people and animals due to the possible leakage of carbon
monoxide from the smoke pipe.
With the operation completed, perform a thorough control of
all seals of the combustion product evacuation and air suction
pipes by performing a combustion analysis.
NOTE: If the fan is removed, make sure the check valve is put back
in the correct direction (see fig. 29).
4 - COMMISSIONING
4.1 First commissioning preparation
Before the ignition and the functional testing of the boiler it is neces-
sary to:
- Check that the system's fuel and water supply taps are open
(fig. A).
fig. A
- Check that the gas type and the power supply pressure are those
for which the boiler is designed.
- Check that the deaerator cap is open.
- Check that the pressure of the water circuit when cold, displayed
on the water gauge, is between 1 bar and 1.5 bar and that the
circuit is de-aerated.
- Check that the pre-loading of the expansion tank is adequate (see
"Technical data" table).
- Check that the electrical connections have been carried out cor-
rectly.
- Check that the combustion product outlet and air suction pipes
were adequately realised.
- Check that the circulator rotates freely because, especially after
long periods of non-operation, deposits and/or debris can prevent
free rotation.
Possible blocking of the circulator shaft (fig. B)
fig. B
1
a
b
- Insert a screwdriver in the hole (1) of the circulator
- Press (a) and turn the screwdriver (b) until the release of the crank-
shaft.
Perform this operation with extreme caution to avoid damaging
the components.