Family Aqua Condens 3.5 BIS
8
The flue gases discharge pipe must be connected to the flue gases
outlet.
For installation, follow the instructions supplied with the specific ac-
cessory kit for condensing boilers.
straight length of twin pipes ø 80mm
pressure drop
45° curve 90° curve
40+40 m
1 m
1,5m
"Straight length" means without bends, drainage terminals or
joints.
The use of a longer pipe causes a loss of output of the boiler.
It is compulsory to use specific pipes (see Riello catalogue).
Make sure the flue gas discharge pipe is tilted 3° towards the
boiler.
The boiler automatically adapts the purging to the type of in-
stallation and the length of the pipes. Do not obstruct or choke
the pipes in any way.
For the indication of the maximum lengths of the single pipe,
refer to the charts.
3.12
POSSIBLE OUTLET CONFIGURATIONS (fig. 20)
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 condi-
tions
C23
Concentric outlet in common smoke pipe (suction
and discharge in the same pipe)
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 suc-
tion line.
C93-C93x
Discharge on roof (similar to C333) aand air suction
from a single existing smoke pipe.
Refer to the regulations in force.
System loading and emptying (fig. 21)
Once the hydraulic connections have been carried out, fill the system.
LOADING
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 drain valve (B) is closed
- open the automatic air vent valve cap (C) by two or three turns
- open the filling tap (H) until the pressure indicated by the water
gauge (D) is between 1 and 1.5 bar (blue field).
- open the manual bleed valve (E) and close it once the bleeding
procedure is completed; if necessary, repeat this operation until no
more air exits the valve (E)
- once the filling operation of the system is finished, close the filling
tap (H).
NOTE: the venting of the boiler takes place automatically via the two
automatic bleed valves C and F.
NOTE: even if the boiler is fitted with an automatic filling device, the
first filling operation must be carried out by turning the tap with the
boiler off.
EMPTYING
- Before starting emptying, switch off the electrical supply by turning
off the system's main switch.
- Close the cold water inlet tap.
Heating system:
- close the shut-off devices of the heating system
- open the automatic air vent valves (C - F)
- manually loosen the system drain valve (B), keeping the elbow of
the hose in position to prevent it slipping from its seat
- the water is discharged through the discharge manifold (A) - for
details refer to paragraph "Discharge manifold".
- drain the lowest points of the system.
Domestic hot water system:
- unscrew the plug on the hose connection (G)
- connect a plastic pipe to the hose connection of the storage tank
discharge valve (G)
- release the discharge device of the valve
- open the hot and cold water taps of the device
- drain the lowest points of the system.
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 ad-
visable to use a rubber pipe Ø18-19 mm closed with a suita-
ble clamp (not provided). The manufacturer is not liable for any
damage resulting from the failure to channel the condensate.
Suggestions for the correct elimination of air from the heating
circuit and from the boiler
(fig.22).
During the initial installation phase, or in the event of extraordinary
maintenance, you are advised to perform the following sequence of
operations:
1. With a CH11 wrench, open the manual air vent valve: Connect
the tube (supplied with the boiler) to the valve, so the water can
be drained into an external container.
2. Turn on the system filler tap on the DHW, and wait until water
begins to seep out of the valve.
3. Switch on the electricity supply to the boiler, leaving the gas tap
turned off.
4. Activate a heat request via the ambient thermostat or the remote
control panel, so that the 3-way valve goes into heating mode.
5. Activate a domestic water request by either turning on a tap (in
the case of instantaneous boilers) or via the storage tank ther-
mostat (for heating-only boilers connected to an external stor-
age tank) for 30” every minute so the 3-way valve passes from
heating to domestic water and vice versa about 10 times. In this
situation, the boiler will go into alarm mode due to the absence of
gas, so it must be reset every time this happens).
6. Carry on with the sequence until only water leaks out of the man-
ual air vent valve, and the air flow has stopped; now close the
manual air vent valve.
7. Check the system pressure level is correct (the ideal level is 1 bar).
8. Turn off the system filling tap on the DHW.
9. Turn on the gas tap and ignite the boiler.
4 - COMMISSIONING AND MAINTENANCE
4.1
First commissioning preparation
Before the ignition and the functional testing of the Family Aqua
Condens 3.5 BIS boiler, it is necessary to:
- check that the system fuel and water supply taps are open
- 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 on the display that the pressure of the water circuit when
cold is between 1 bar and 1.5 bar and that the circuit is vented
- check that the pre-loading of the expansion tank is adequate (see
the 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 turns freely; undo the inspection screw
and check with a flat screwdriver that the rotor shaft moves without
hindrances.
