Riello Start Aqua Condens 25/60 BIS Installer And User Manual page 28

Start Aqua Condens 25/60 BIS
Concentric pipes (ø 80-125)
The appropriate adaptor kit must be installed for this configuration.
The concentric pipes can be fitted in most suitable direction in
relation to installation requirements. For installation, follow the
instructions supplied with the specific kit for condensing boilers.
straight length of concentric
pipe Ø 80-125 mm
14,85 m
9
"Straight length" means without bends, drainage terminals or
joints.
Twin pipes (ø 80mm)
The twin pipes can face in the direction most suited to the installation
requirements.
The suction pipe of the combustion air must be connected to the
input after removing the cap fixed with three screws.
The flue gases discharge pipe must be connected to the flue gases
outlet.
For installation, follow the instructions supplied with the specific
accessory kit for condensing boilers.
straight length of twin pipes ø 80mm
36+36 m
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"Straight length" means without bends, drainage terminals or
joints.
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The use of a longer pipe causes a loss of output of the boiler.
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It is compulsory to use specific pipes (see Riello catalogue).
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Make sure the flue gas discharge pipe is tilted 3° towards the
boiler.
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The boiler automatically adapts the purging to the type of
installation and the length of the pipes. Do not obstruct or
choke the pipes in any way.
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For the indication of the maximum lengths of the single pipe,
refer to the charts.
POSSIBLE OUTLET CONFIGURATIONS (fig. 21)
B23P-B53P Suction in room, with external outlet
C13-C13x
Concentric wall outlet. The pipes may also be split,
but the outputs must be concentric or sufficiently
close together to be subjected to similar wind con-
ditions (within 50cm)
C33-C33x
Concentric roof outlet. Outlets as for C13
C43 C43x Discharge and suction in separate shared smoke
pipes subject to similar wind conditions
C53-C53x
Separated discharge and suction on wall or roof,
in areas with different pressure levels
C83 C83x
Outlet in single or shared smoke pipe and wall
suction line.
C93-C93x
Discharge on roof (similar to C33) and air suction
via a single existing smoke pipe.
9
Refer to the regulations in force.
3.14 System loading and emptying (fig. 22-23)
FILLING THE SYSTEMS
In case of a new installation or replacement of the boiler, it is
necessary to clean the heating system.
In order to ensure the proper functioning of the product, after any
cleaning, additive and/or chemical treatments (e.g. antifreeze
liquids, filming agents, etc.) check that the parameters in the table
are within the indicated values.
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Parameters
pH value
Hardness
Appearance
pressure drop
Fe
45° curve 90° curve
Cu
1 m 1,5m
Once the hydraulic connections have been carried out, fill the
system. This operation must be carried out with a cold system,
following these instructions:
Domestic hot water system:
- open the cold water inlet tap to fill the storage tank
- to check that the storage tank is full, open a hot water tap and
wait for the water to exit.
Heating system:
- make sure that the system discharge valve (B) is closed
- open the plug of the automatic bleed valves (C and E) by two or
three turns
- open the filling tap (G) until the pressure indicated by the water
pressure gauge is 1,5 bar.
pressure drop
- open the manual bleed valve (D) with a CH11 wrench and close
45° curve 90° curve
it once the bleeding procedure is completed; If necessary, repeat
1 m 1,5m
this operation until no more air exits the valve (D)
- once the filling operation of the system is finished, close the filling
tap G.
Each time the boiler is electrically powered, it begins an automatic
venting cycle that lasts about 2 minutes. The symbol "
displayed during this phase.
NOTE: the venting of the boiler takes place automatically via the
two automatic bleed valves C and E.
NOTE: the first system filling operation must be done by means of
tap G.
EMPTYING THE SYSTEMS
Before starting emptying, switch off the electrical supply by turning
off the system's main switch
Heating system:
- close the shut-off devices of the heating system
- open the automatic bleed valve (C)
- manually loosen the system drain valve (B), keeping the elbow of
the hose in position to prevent it slipping from its seat
- the system's water is discharged through the discharge manifold
(A)
- drain the lowest points of the system.
Domestic hot water system
When there is risk of frost, the domestic hot water system must be
emptied in the following way:
- turn off the main water supply tap
- unscrew the plug on the hose connection (F)
- connect a plastic pipe to the hose connection of the storage tank
discharge valve (F)
- release the discharge device of the valve
- turn on all the hot and cold water taps
- drain the lowest points of the system.
9
unit of
measurement
-
°F
-
mg/kg
mg/kg
The discharge manifold (A) must be connected via a rubber
pipe to an appropriate collection and evacuation system in
the white water discharge drain in compliance with current
regulations. The outer diameter of the manifold is 20 mm: it is
therefore advisable to use a rubber pipe Ø18-19 mm closed
with a suitable clamp (not provided). The manufacturer is not
liable for any damage resulting from the failure to channel the
condensate.
Hot water Filling
circuit water
7-8 -
- <15
- clean
0,5 -
0,1 -
" is