Beretta MYNUTE X R Installer And User Manual page 7

4 - EXCEPTIONAL USE OF A STANDARD CIRCULATOR WHOSE SPEED CANNOT BE
REGULATED (PUMP CONTROL TYPE = 0)
This mode should be used in exceptional cases where you want use a traditional UPS
circulator in the boiler.
CONFIGURATIONS RECOMMENDED BY THE MANUFACTURER
OUTDOOR TEMPERATURE
SENSOR
(YES THERMOREGULATION)
LOW ΔT constant
TEMPERATURE (5 ≤ PUMP CONTROL
(floor) TYPE ≤ 7)
HIGH
ΔT constant
TEMPERATURE
(15 ≤ PUMP CONTROL
(radiators without
TYPE ≤ 20)
thermostatic valves)
HIGH
ΔT constant
TEMPERATURE
(15 ≤ PUMP CONTROL
(radiators with
TYPE ≤ 20)
thermostatic valves)
3.11 Manual reset of the circulator
The circulator has an electronic reset function, however if a manual reset is necessary,
proceed as follows:
- use a Phillips screwdriver, preferably Phillips no. 2
- insert the screwdriver in the hole until it comes into contact with the reset screw, then
press (basically the screw should go in by about 2 mm) and turn anti-clockwise.
3.12 Removing the casing
To access the components inside, remove the casing as indicated below:
- find and unscrew the 2 screws (A - fig. 11) fixing the casing to the boiler levering the two
fixing clips (C - fig. 11), detach the bottom part of the casing
- lift the casing upwards to release it from the top tabs (B - fig. 11), then remove it.
WARNING
b
If removing the side panels, put them back in their initial position, referring to the
adhesive labels on their walls.
b
If the front panel is damaged it must be replaced.
b
The noise absorbing panels inside the front and side walls ensure the airtight seal
for the air supply duct in the installation environment.
b
It is therefore CRUCIAL after the dismantling operations to correctly reposition the
components to ensure the boiler's seal is effective.
3.13 Flue gas exhaust and combustion air suction (Fig. 12)
To evacuate the combustion products, refer to UNI 7129-7131. Always comply with local
standards of the Fire Department, the Gas Company and with possible municipal disposi-
tions. The evacuation of the combustion products is carried out by a centrifugal fan and the
control board constantly monitors that it is operating correctly. It is essential for the evacua-
tion of the flue gases and the adduction of the boiler's combustion air that only original pipes
be used (except C6) and that the connection is made correctly as shown in the instructions
provided with the flue gases accessories. A single flue can be connected to several applian-
ces provided that every appliance is the condensing type. The boiler is a C-type appliance
(with airtight chamber), and must therefore have a safe connection to the flue gas discharge
pipe and to the combustion air suction pipe; these both carry their contents outside, and are
essential for the operation of the appliance. Both concentric and twin terminals are available.
Suction/discharge pipes length table
Maximum straight length
20 R
Flue gases pipe Ø 80 mm
("forced open" installation)
110 m
(type B23P-B53P)
Concentric pipe
10 m
Ø 60-100 mm (horizontal)
Concentric pipe
11 m
Ø 60-100 mm (vertical)
Concentric pipe
25 m
Ø 80-125 mm
Twin pipe Ø 80 mm 60+60 m 35+35 m 28+28m
b
The straight length includes the first bend (connection into the boiler), terminals
and joints. An exception is made for the vertical Ø 60-100 mm coaxial pipe, whose
straight length excludes bends.
OUTDOOR TEMPERATURE
SENSOR
(NO THERMOREGULATION)
PROPORTIONAL
(PUMP CONTROL TYPE = 85)
PROPORTIONAL
(PUMP CONTROL TYPE = 85)
PROPORTIONAL
(PUMP CONTROL TYPE = 60)
Pressure drop
30 R 40 R Bend 45° Bend 90°
65m 53m 1 m 1.5 m
6 m 6m 1.3m
7 m 7m 1.3m
15 m 15m 1 m 1.5 m
1 m 1.5 m
b
The boiler is supplied without the flue gas exhaust/air suction kit, since it is possible
to use the accessories for condensing appliances that best fit the installation cha-
racteristics (see catalogue).
b
The maximum lengths of the pipes refer to the flue accessories available in the
catalogue.
b
It is compulsory to use specific pipes.
b
The non insulated flue gas outlet pipes are potential sources of danger.
b
The use of a longer pipe causes a loss of output of the boiler.
b
Make sure the flue gas discharge pipe is tilted 3° towards the boiler.
b
The exhaust pipes can face in the direction most suited to the installation
requirements.
b
As envisaged by current legislation, the boiler is designed to take in and dispose of
flue gas condensate and/or meteoric water condensate deriving from the flue gas
discharge system using its own siphon.
b
If a condensate relaunch pump is installed, check the technical data (provided by the
manufacturer) regarding output, to ensure it operates correctly.
"Forced open" installation (B23P-B53P) (Fig.13)
In this configuration the boiler is connected to the ø 80 mm flue gases discharge pipe by
means of an adaptor.
- Position the adaptor so that the Ø 60 pipe goes fully into the flue gases turret of the boiler.
- Once positioned, make sure that the 4 notches (A) on the flange connect to the groove
(B) on the Ø 100 of the adaptor.
- Fully tighten the screws (C) that tighten the two locking terminals of the flange so the
adaptor itself is restrained.
Coaxial pipes (ø 60-100 mm) (Fig. 14)
- Position the bend so that the Ø 60 pipe goes fully up against the flue gases turret of the
boiler.
- Once positioned, make sure that the 4 notches (A) on the flange connect to the groove
(B) on the Ø 100 of the bend.
- Fully tighten the screws (C) that tighten the two locking terminals of the flange so the
bend itself is restrained.
Twin pipes (ø 80 mm) (Fig. 15)
The combustion air suction pipe should be selected from the two inputs, remove the closing
plug fixed with the screws and fix the specific air deflector.
- Position the adaptor on the flue gases pipe so that the Ø 60 pipe goes fully up against
the flue gases turret of the boiler.
- Once positioned, make sure that the 4 notches (A) on the flange connect to the groove
(B) on the Ø 100 of the adaptor.
- Fully tighten the screws (C) that tighten the two locking terminals of the flange so the
adaptor itself is restrained.
If the Ø 60-100 to Ø 80-80 splitter kit is used instead of the twin pipe system, there is a loss
in the maximum lengths as shown in the table.
- Place the splitter so that the Ø 60 pipe goes fully up against the flue gases turret of the
boiler.
- Once positioned, make sure that the 4 notches (A) on the flange connect to the groove
(B) on the Ø 100 of the splitter.
- Fully tighten the screws (C) that tighten the two locking terminals of the flange so the
adaptor itself is restrained.
Loss of length (m)
Coaxial pipes (ø 80-125 mm) (Fig. 16)
- Place the adaptor vertical attachment so that the Ø 60 pipe goes fully up against the flue
gases turret of the boiler.
- Once positioned, make sure that the 4 notches (A) on the flange connect to the groove
(B) on the Ø 100 of the adaptor.
- Fully tighten the screws (C) that tighten the two locking terminals of the flange so the
adaptor itself is restrained.
- Then fit the Ø 80-125 adaptor kit on the vertical fitting.
Twin pipes with Ø 80 pipework (Ø50 - Ø60 - Ø80) (Fig. 17)
1.6m
Thanks to the boiler characteristics, a Ø80 flue gas exhaust pipe can be connected to the
Ø50 - Ø60 - Ø80 piping ranges.
1.6m
b
For the pipe, you are advised to make a project calculation in order to respect the
relevant regulations in force.
The table shows the standard configurations allowed.
Ø50 Ø60 Ø80
5.5 for flue gases pipe
0.5 1.2
7.5 for air pipe
ENGLISH
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