Baxi Combi Instant 80 HE Installation & Servicing Instructions Manual page 10

Appliance Type
Appliance Category
Heat Input CH
Max
kW 30.5
Heat Output CH (Non-Condensing)
Max
kW 29.6
Heat Output CH (Condensing)
Max
kW 31
Heat Input DHW
Max
kW 30.5
Heat Output DHW
Max
kW 29.6
Max Gas Rate (Natural Gas - G20)
(After 10 mins)
m 3 /h 3.22
Burner Pressure (Natural Gas - G20)
Max Rate
mbar 12.1 ± 0.5
Inlet Pressure (Natural Gas - G20)
mbar 20
Burner Injector (Natural Gas - G20)
15 x 1.25mm Diameter
Electrical Supply
(Appliance must be connected to an
earthed supply)
External Fuse Rating
Internal Fuse Rating
Fuse 2A Fast Blow to BS 4265
SEDBUK Declaration For Combi Instant 105 HE
The seasonal efficiency (SEDBUK) is 87.3% (89.4% LPG)
Band B
This value is used in the UK Government's Standard Assessment
Procedure (SAP) for energy rating of dwellings. The test data from
which it has been calculated have been certified by 0051.
LPG Propane - G31
Burner Injector 15 x 0.77mm diameter
Burner Pressure
Propane mbar
Inlet Pressures
mbar
10
C C
Power Consumption
12 32
CAT II
2H 3P Electrical Protection
NO x Class
Min
Condensate Drain
11.9
Flue Terminal
Min
Dimensions
11
Connections
Gas Supply
Min
Central Heating Flow
11.3
Central Heating Return
Cold Water Mains Inlet
DHW Flow
Pressure Relief Discharge
Outercase Dimensions
Casing Height
Overall Height Inc Flue
Elbow
Casing Width
Casing Depth
Clearances
Above Casing
Below Casing
Min Rate Front
2.1 ± 0.2 Front
L.H. Side
R.H. Side
*NOTE: The boiler can be operated with a
clearance of 5mm at the right. This is also sufficient
for routine maintenance. However a clearance of
20mm is required if it is necessary to remove the
230V~ 50H z
secondary heat exchanger. This should be
considered when siting the appliance and in the
event of any subsequent alterations in the area of
installation
3A
Weights
Packaged Boiler Carton
Installation Lift Weight
Max Rate
Min Rate
32.3 ± 0.5 5.2 ± 0.2
37
4.0 Technical Data
4.2 Combi Instant 105 HE
180W
IPX5D
3
1" BSP
Diameter 100mm
Projection 125mm
copper tails
- 22mm
- 22mm
- 22mm
- 15mm
- 15mm
- 15mm
- 780mm
- 965mm
- 450mm
- 345mm
200 mm Min
200 mm Min
450 mm Min
(For Servicing)
5 mm Min
(In Operation)
5 mm Min
5 mm Min
(In Operation)
20 mm Min
(See Note*)
kg
57.5
47
Pump - Available Head
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0 200 400
Flow Rate (l/h)
Central Heating Primary Circuit
Pressures
Safety Discharge
Max Operating
Min Operating
Recommend Operating
DHW Circuit bar
Pressures
Max Operating 8
Min Operating 0.2
Min Operating Pressure
at 13.2 l/min 0.96
Flow Rates l/min
DHW Flow Rate
@ 30°C Rise 14.1
DHW Flow Rate
@ 35°C Rise 12.1
Min Working
DHW Flow Rate 2.5
Pump
Available Head See graph below
Expansion Vessel - (For Central Heating only.
Integral with appliance)
bar
Min Pre-charge Pressure 0.5
litre
Max Capacity of
CH System 80
Primary Water Content 3.2
of Boiler (unpressurised)
Temperatures
C.H. Flow Temp
(adjustable)
35°C to 85°C
max
D.H.W. Flow Temp
35°C to 65°C
max
dependent upon flow rate
50°C Pre-heat OFF
65°C Pre-heat ON ± 5°C
dependent upon flow rate
600 800 1000 1200
bar
3
2.5
0.5
1-2
(± 5°C)
(± 5°C)