2.6
PERFORMANCE DATA - Qudos 28h & Qudos 28hP
Seasonal Efficiency (SEDBUK) = 91.1 (Qudos 28h) & 93.1 (Qudos 28hP)
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 Advantica Technologies Ltd
Keston Boilers Ltd declare that there are no substances harmful to health within the
appliance or used during the production of the appliance.
The Qudos 28h is intended for domestic and commercial EMC environments and on a
governed G20 meter supply.
The Qudos 28hP is intended for domestic and commercial EMC environments and on a
governed G31 supply.
This boiler meets the requirements of SI 3083 The Boiler (Efficiency) Regulations and is therefore
deemed to meet the requirements of Directive 92/42/EEC. The CE mark on the appliance shows
compliance with Directives 90/396/EEC, 73/23/EEC and 89/336/EEC.
IMPORTANT
This product contains ceramic fibre boards, which although not regarded as a risk, contain
ceramic fibre which may cause temporary irritation to eyes, skin and respiratory tract. The
fibres are held in place by inorganic binders. Therefore as long as the boards are not
disturbed they will not be released. Since the boards are non-servicable parts there should
be no risk. Under no circumstances should the user interfere with any sealed parts.
To ensure that the release of fibres from these RCF articles is kept to a minimum, during
installation and servicing we recommend that you use a HEPA filtered vacuum to remove
WD440/3/2007 Chapter 2 : General Instruction The Keston Qudos 28h & Qudos 28hP Boilers
Installation & Servicing Instructions
Page : 9
Qudos 28h
Qudos 28hP
Nat. Gas (G20)
LPG (G31)
Min. Input (Gross CV)
kW/(Btu/h)
7.8/(26,600)
7.6/(26,000)
Max. CH Input (Gross CV)
kW/(Btu/h)
29.4/(100,300)
28.8/(98,300)
Max. CH Output To Water
(80/60
o
C Flow/Return)
kW/(Btu/h)
26.4/(90,500)
26.4/(90,500)
(50/30
o
C Flow/Return)
kW/(Btu/h)
28.4/(96,900)
28.4/(96,900)
Min. CH Output To Water
(80/60
o
C Flow/Return)
kW/(Btu/h)
7.0/(24,900)
7.0/(24,900)
(50/30
o
C Flow/Return)
kW/(Btu/h)
7.8/(26,600)
7.6/(26,000)
Max. Burner Press.-Hot
(Factory Preset)
mbar/(in w.g)
0/(0)
0/(0)
Max. Gas Cons. After 10 mins (DHW)
l/s / (Ft
3
/hr)
0.76/(96.6)
0.35/(45.0)
Max. Operating Flow Temp.
o
C
82
82
Max. Press. (Sealed System)
bar
2.70
2.50
Min. Press/Head (Open System)
bar
0.25 (8 feet)
0.25 (8 feet)
Inlet Gas Pressure
mbar/(in w.g)
20.0 / (8.0)
37.0/(14.8)
Recommended Temp Diff.
o
C
8 to 20
8 to 20
Electrical Supply
230V 50Hz
230V 50Hz
Power Consumption (Max)
W
80
80
Power Consumption (Standby)
W
8.5
8.5
Type of Gas
G20 Natural Gas G31 LPG
Optimum Flue Gas CO
2
Level (at max CH rate, case on)
9.1
10.5
Expected CO/CO2 Ratio (at max CH rate, case on)
0.0007
0.001
Destination Countries
GB/IE
GB/IE
SEDBUK Efficiency
91.1
93.1
NOx Class
5
5
