8
SECTION 2 - TECHNICAL DATA
2.1 Central Heating
Unica i28
Unica i32
Unica i36
Heat input (kW)
20.00
25.00
30.00
Maximum heat output (kW) 60/80°C
19.62
24.58
29.25
G20
G31
G20
G31
G20
G31
Minimum heat output (kW) 60/80°C
2.76
3.95
3.16
4.45
3.50
4.87
Maximum heat output (kW) 30/50°C
21.44
26.70
31.77
Minimum heat output (kW) 30/50°C
3.00
4.20
3,44
4,74
3.80
5.29
Minimum working pressure
0.25-0.45 bar
Maximum working pressure
2.5 bar
Minimum
fl
ow rate
300 l/h
2.2 Domestic Hot Water
Unica i28
Unica i32
Unica i36
Heat input (kW)
28.00
32.00
36.00
Flow Rate:
Δ
T35°C
11.5
13.1
14.7
Maximum inlet pressure
6 bar
Minimum inlet pressure
0,2 bar
Minimum
fl
ow rate
2 l/min
2.3 Gas Pressures
Unica i28
Unica i32
Unica i36
Inlet pressure (G20)
20.0 mbar
Heating maximum gas rate (m3/hr)
2.12
2.64
3.17
DHW maximum gas rate (m3/hr)
2.96
3.38
3.81
Minimum gas rate (m3/hr)
0.30
0.34
0.38
Injector size (mm)
4.70
fl
ap side - 4.20 free side
4.25
fl
ap side - 4.10 free side
5.1
fl
ap side - 4.7 free side
2.4 Expansion Vessel
Unica i28
Unica i32
Unica i36
Capacity
8 litres
Maximum system volume
76 litres
Pre-charge pressure
1 bar
2.5 Dimensions
Unica i28
Unica i32
Unica i36
Height (mm)
780
Width (mm)
400
Depth (mm)
358
384
Dry weight (kg)
40
42
41
2.6 Clearances
Unica i28
Unica i32
Unica i36
Sides
12mm
Top
150mm from casing or 25mm above
fl
ue elbow (whichever is applicable)
Bottom
150mm
Front
600mm
2.7 Connections
Unica i28
Unica i32
Unica i36
Flow & return
22mm
Gas
15mm
DHW hot & cold
15mm
Safety valve
15mm
Condense
21mm
2.8 Electrical
Unica i28
Unica i32
Unica i36
Power consumption (Watts)
120
126
136
Voltage (V/Hz)
230/50
Internal fuse
3.15A T (for PCB) - 3.15A F (for connections block)
External fuse
3A
2.9 Flue Details (concentric 60-100)
Unica i28
Unica i32
Unica i36
Maximum horizontal
fl
ue length (60/100mm)
7.80m
7.80m
7.85m
Maximum vertical
fl
ue length (60/100mm)
8.80m
8.80m
8.85m
2.9A Flue Details (concentric 80-125)
Unica i28
Unica i32
Unica i36
Maximum horizontal
fl
ue length (80/125mm)
20m
20m
14.85m
Maximum vertical
fl
ue length (80/125mm)
25m
25m
19.85m
2.9B Flue Details (twin pipes)
Unica i28
Unica i32
Unica i36
Maximum horizontal
fl
ue length (80mm/80mm)
50m/50m
50m/50m
38m/38m
Maximum vertical
fl
ue length (80mm/80mm)
50m/50m
50m/50m
38m/38m