Heating engineer
Installation, use and maintenance manual – Caldaria Con export
27
3
into a siphoned container connected to the sewerage
system.
Maximum exhaust length
Table 3.3
Characteristics of flue gas exhaust
Caldaria 35
Caldaria 55.1
Caldaria 100.2
Installation data
Flue gas
exhaust
residual
head
Pa
91
100
diameter (Ø) mm
80
100
maximum equivalent
length of exhaust duct
m
15
14
8
The maximum exhaust length (or equivalent linear length) is ob-
tained by adding the length of the linear duct to the equivalent
length of each additional curve.
The equivalent lengths of the curves are given in Table
3.4
Table 3.4
Pressure drop of flue pipes
Equivalent length
(m)
Pressure drop
(Pa)
Caldaria 35
extension pipe Ø 80 mm, length 1000 mm
1
5,8
elbow 90° Ø 80 mm
1,5
8,7
elbow 45° Ø 80 mm
1,2
7,0
Caldaria 55.1
extension pipe Ø 80 mm, length 1000 mm
1
7,0
elbow 90° Ø 80 mm
2,5
17,5
elbow 45° Ø 80 mm
1,4
7,8
Caldaria 100.2
extension pipe Ø 100 mm, length 1000
mm
1,6
8
elbow 90° Ø 100 mm
3
24
elbow 45° Ø 100 mm
1,6
11
3.5
PUMP ANTIFREEZE AND ANTI-LOCK
FUNCTION
Heating antifreeze function
If the outlet water temperature detected by the temperature
probe falls below the activation value of the antifreeze function
(default 12 °C, settable for Caldaria 35 and Caldaria 55.1 via pa-
rameter P31) the control board starts the circulation pump and
the burner ignition at minimum power.
When the outlet water temperature reaches 30 ºC or the inlet
water temperature reaches 20 °C (antifreeze temperature OFF)
the control board will turn off the burner.
DHW antifreeze function
If the water temperature detected by the DHW buffer tank probe
falls below +4 ºC (antifreeze temperature ON) the control board
starts the circulation pump and the burner ignition at minimum
power.
When the water temperature of the DHW buffer tank reaches 8
ºC the control board will turn off the burner.
Electrical and gas continuity
The antifreeze function is only effective if the power
and gas supplies are assured. Otherwise, antifreeze fluid
might be required.
Pump anti-lock function
In order to prevent the circulation pump from locking, the boiler
is equipped with an anti-lock function which, every 24 hours of
inactivity, operates the circulation pump for 30 seconds.
Electrical continuity
The pump anti-lock function is only effective if the pow-
er supply is guaranteed.
3.6
FUEL GAS SUPPLY
3.6.1
Gas connection
▶
Caldaria 35: 3/4" M
▶
Caldaria 55.1: 3/4" M
▶
Caldaria 100.2: 1" M
on the bottom of the boiler (Paragraph 1.2
▶
Install an anti-vibration connection between the appliance
and the gas piping.
3.6.2
Mandatory shut-off valve
▶
Provide a gas shut-off valve (manual) on the gas supply line,
next to the appliance, in a visible and easy accessible posi-
tion, to exclude it when required.
▶
Perform connection in compliance with applicable regula-
tions.
3.6.3
Gas pipes sizing
The gas pipes must not cause excessive pressure drops and, con-
sequently, insufficient gas pressure for the appliance.
3.6.4
Supply gas pressure
This appliance is equipped for a maximum gas supply
pressure of 50 mbar.
The appliance's gas supply pressure, both static and dynamic,
must comply with Table 3.5
p. 27, with tolerance ± 15%.
Non compliant gas pressure (Table 3.5
p. 27) may
damage the appliance and be hazardous.
Table 3.5
Network gas pressure
Product category
Countries of destination
Gas supply pressure [mbar]
G20
G25
G25.3
G30
G31
II
2H3B/P
AL, AT, BG, CH, CY, CZ, DK, EE, FI, GR, HR, IT, LT, LV, MK, NO, RO, SE,
SI, SK, TR
20
30
AT, CH
20
50
HU
25
30
The appliance gas supply pressure, both static and dynamic, must comply with the values in the Table, with a tolerance of ± 15%.
Summary of Contents for Caldaria 100.2 Condensing+ export
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