25
ENGLISH
Maximum pipe length Ø 80 mm - 29 KIS
0
10
20
30
40
50
60
70
0
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
Length of suction pipe (m)
Length of discharge pipe (m)
Twin pipes ø 80 with ducting Ø 50, Ø 60 and Ø 80
Thanks to the boiler characteristics, a flue gas discharge pipe ø
80 can be connected to the ducting ranges ø 50, ø 60 and ø 80.
9
For the ducting, you are advised to make a project calculation in
order to respect the relevant standards in force.
The table shows the standard configurations allowed.
T
able of standard pipe configurations
(*)
Air suction
1 bend - 90° ø 80
4.5 m pipe ø 80
Flue gas discharge
1 bend - 90° ø 80
4.5 m pipe ø 80
Reduction from ø 80 to ø 50 or from ø 80 to ø 60
90° stack base bend ø 50 or ø 60 or ø 80
For ducting pipe lengths see table
(*) Use flue gas system accessories in plastic (PP) for condensing
boilers: Ø50 and Ø80 H1 class and Ø60 P1 class.
The boilers are factory set to:
25 KIS:
4.900 rpm (CH), 6.100 rpm (DHW) and the maximum length
that can be reached is 7 m for the ø 50 pipe, 25 m for the ø 60 pipe
and 75 m for the ø 80 pipe.
29 KIS:
5.300 rpm (CH), 6.200 rpm (DHW) and the maximum length
that can be reached is 5 m for the ø 60 pipe and 67 m for the ø 80
pipe (not applicable for ø 50 pipe).
Should it be necessary to achieve greater lengths, compensate the
pressure drop with an increase in the r.p.m.of the fan, as shown in
the adjustments table, to ensure the rated heat input.
9
The minimum calibration is not modified.
Adjustments table
Fan rotations
r.p.m.
Pipes Ø 50 (*)
max length (m)
CH
DHW
25 KIS
4.900
6.100
7
5.000
6.200
9
5.100
6.300
12 (**)
29 KIS
5.300
6.200
not applicable
5.400
6.300
2
Fan rotations
r.p.m.
Pipes Ø 60 (*)
max length (m)
CH
DHW
25 KIS
4.900
6.100
25
5.000
6.200
30
5.100
6.300
38 (**)
29 KIS
5.300
6.200
5
5.400
6.300
13
Fan rotations
r.p.m.
Pipes Ø 80 (*)
max length (m)
CH
DHW
25 KIS
4.900
6.100
75
5.000
6.200
90
5.100
6.300
113 (**)
29 KIS
5.300
6.200
67
5.400
6.300
182
(*) Use flue gas system accessories in plastic (PP) for condensing
boilers.
(**) Maximum installable length ONLY with exhaust pipes in H1
class.
The configurations Ø 50, Ø 60 and Ø 80 show test data verified in
the laboratory.
In the case of installations that differ from those indicated in the
“standard configuration” and “adjustments” tables, refer to the
equivalent linear lengths below.
9
In any case, the maximum lengths declared in the booklet are
guaranteed, and it is essential not to exceed them.
COMPONENT
Linear equivalent in metres Ø80 (m)
Ø 50
Ø 60
Bend 45°
12,3
5
Bend 90°
19,6
8
Extension 0.5m
6,1
2,5
Extension 1.0m
13,5
5,5
Extension 2.0m
29,5
12
2.10 - System loading and emptying
In case of a new installation or replacement of the boiler, it is neces-
sary 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.
Parameters
Unit of
measurement
Hot water
circuit
Filling
water
pH value
-
7-8
-
Hardness
°F
-
<15
Appearance
-
-
clean
Fe
mg/kg
0,5
-
Cu
mg/kg
0,1
-
Once the hydraulic connections have been carried out, fill the system.
Loading
• Open by two or three turns the plugs of the lower (A - Fig. 13) and
upper (D - Fig. 13) automatic air vent valves; to allow a continuous
venting of the air, leave the plugs of valves A and D open (Fig. 13).
• Make sure the cold water inlet tap is open, turning it anti-clockwise.
• Open the filling tap (B - fig. 13) until the pressure indicated by the
water pressure gauge is between 1 and 1.5 bar.
• Close the filling tap (B - fig. 13).
NOTE -
The venting of the
START CONDENS Kis
boiler takes place
automatically via the two automatic vent valves A and D (Fig. 13),
the first positioned on the circulator and the second inside the air
distribution box.
NOTE -
If the venting phase proves difficult, proceed as described
in the paragraph "Eliminating the air from the heating circuit and
boiler".
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
• Manually loosen the system drain valve (C - fig. 13)
• The water is discharged through the discharge manifold - for
details refer to paragraph "Discharge manifold".
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