Technical Data - Baxi NUVOLA 28 Fi Installers And Users Instructions

Technical data

Approvals:
EC Approval (IMQ)
Category
Connection pressure – natural gas (G20)
Connection pressure – LPG (G30/31)
VA approval
Output and loads:
Load High – max.
Load High – min.
Output – max. (kcal – 24,000)
Output – min. (kcal – 8,900)
Efficiency – nominal output
Efficiency – minimum output
Efficiency in accordance with EU Directive 92/42
Heating system – specifications:
Temperature – setting range (aut.)
Temperature – max. in heating system
Operating pressure – max. in heating system
Expansion vessel – volume
Expansion vessel – pre-set pressure
Water for domestic use – specifications:
Temperature – setting range
Cylinder volume
Operating pressure – max. pressure in water circuit
Hot-water output at ∆T = 25°
Hot-water output at ∆T = 35°
Hot-water output – nominal
(in accordance with EN 625)
Hot-water output at ∆T = 30°
Reheating time – cold (10-60°C)
Gas:
Jet pressure, jet sizes and the number of jets can be found on page 28
Electrical connection:
Electrical connection
Electricity consumption
Fuse (5 x 20 mm FIN)
Radio interference suppression in accordance with EC EN standard 92/311
Dimensions and weight:
Weight – net
Weight – gross
(incl. central heating and hot water content)
Flue system – dimensions and lengths:
Vertical balanced – internal / external pipe
Horizontal balanced – internal / external pipe
Split flue – flue gas and air inlet
Horizontal balanced – max.
Vertical balanced – max.
Split flue – max. (air + flue gas)
For each 90° bend, the length is reduced by 1 metre
For each 45° bend, the length is reduced by 0.5 metre
Pipe connections:
1 – Domestic hot water
2 – Domestic cold water
3 – Heating system return
4 – Heating system out
5 – Gas connection
The boiler controls and regulating equipment are designed so that they conform to all relevant EC provisions. BAXI is continually developing its
products and consequently reserves the right to change the specifications contained in these instructions without prior notice.
(*) clearance requirements from sides: + 20 mm
Conversion values used:
1 kW = 860 kcal/h; 1 mbar = 10.197 mmH
GUARANTEE: 5 years against corrosion of parts in contact with flue gas and the hot-water cylinder
2 years' guarantee on other parts in accordance with the BAXI guarantee certificate
height
width (*)
depth
0
2
mbar
mbar
l/min
l/min
l/min
l/30 min
ampere
Ø
Ø
Ø
35
921.968.2.00.02.010702
0051AU1627
II 2H3B/P
20
30
3.24/12157
kW 34,5
kW 13,2
kW 28,0
kW 10,4
% 90,6
% 88,0
**
°C
30-85
°C
95
bar 2,5
l 7,5
bar 0,5
°C
5-65
l 60
bar 10,0
16,0
11,4
17,0
450
min. 12
volt 230
Hz 50
Watt 190
volt 250
2
mm 950
mm 600
mm 460
kg 70
kg 133,3
mm 80/125
mm 60/100
mm 80
m 2,7
m 7,5
m 2 x 10
RG 1/2"
RG 1/2"
RG 3/4"
RG 3/4"
RG 3/4"