MAINTENANCE AND
SERVICE GUIDE
Fanned Flue Combination Boiler
Heating and Storage Domestic Hot Water
Dimensions
Technical data
Heat input C/H & DHW
Cal. comfort 80 : 11.73 to 28.70 kW
Cal. comfort 100 : 15.43 to 31.57 kW
Heat output C/H & DHW Cal. comfort 80 : 9.5 to 24 kW
Cal. comfort 100 : 12.5 to 28,2 kW
Max. operating pressure C/H circuit
: 2.5 bar
Expansion vessel net capacity
: 5.44 l
Expansion vessel initial pressure
: 0.7 bar
Electrical consumption
: 150 w
Voltage
: 230 v
Electrical protection index
: IP44
Fuses
: 2 A and 1.25 A
DHW flow rate at @ AT 30 K Cal. comfort 80 :
12.1 l/min
Cal. comfort 100 :
14.1 l/min
DHW flow rate at @ AT 35 K Cal. comfort 80 :
10.4 l/min
Cal. comfort 100 : 12.1 l/min
Minimum DHW operating flow rate
:
2.00 l/min
Minimum DHW working pressure
:
0.5 bar
Maximum DHW working pressure
:
10 bar
Gas category
:
II 2H 3+
Nominal gas flow rate at 15°C and 1013 mbar
Calydra. comfort 80
Calydra. comfort 100
Maximum Minimum Maximum Minimum
power 25,9 kW
power 9.5 kW
power 31,1 kW
power 9,5 kW
- Natural gas ( G 20) at 20 mbar
2.74 m
3
/h
1.00 m
3
/h
3.29 m
3
/h
1.00 m
3
/h
- Butane gas ( G 30) at 28 mbar
2.04 kg/h
0.74 kg/h
2.45 kg/h
0.74 kg/h
- Propane gas ( G 31) at 37 mbar
2.00 kg/h
0.72 kg/h
2.42 kg/h
0.72 kg/h
Injectors and gas valves seat diameter
Calydra. comfort 80
Calydra. comfort 100
Natural gas
Butane or Propane
Natural gas
Butane or Propane
- Solenoid restrictor diameter
2.60 mm
1.75 mm
2.90 mm
2.00 mm
- Gas valve restrictor diameter
6.70 mm
4.90 mm
no resrictor required
6.70 mm
- Manifold injectors (16)
1.23 mm
0.70 mm
1.28 mm
0.76 mm
JK L M N
I
54 54 54 54 68
360
260
5050
738
850
380
212
I
Safety valve outlet
J Heating flow
K D.H.W. flow
L Gas supply
M Cold water inlet
N Heating return
1
2
3
0
4
bar
1
2
3
0
4
bar
c
The boiler is suitable for the 4 flue types:
• type C 12
• type C 22
• type C 32 xx or C 32 xy
• type C 52
Outer case dimensions :
- Height : 850
- Width : 440 (minimum space required 450)
- Depth : 380
All dimensions in mm
Fig. 1
c
C
