The section below details the performance
data for the Keston Qudos range.
Physical
Data
Qudos
28h and 28hP
Qudos
28s and 28sP
Qudos
Duet 120/150/210
Qudos
Solar Duet 210
Cabinet
Height
mm
680
700
1780
2050
Cabinet
Width
mm
390
435
625
625
Cabinet
Depth
mm
280
280
915
915
Top
Clearance
mm
150
150
150
150
Side
Clearance
mm
5
5
5
5
Base
Clearance
mm
200
200
N/A
N/A
Front
Clearance (for servicing)
mm
300
300
300
300
Weight
- Full
kg/(lbs)
39/(86)
47/(104)
261/296/373
408
Weight
- Empty
kg/(lbs)
35/(77)
43/(95)
121/126/137
154
Flow
and Return Connection
G3/4
G3/4
22mm
22mm
DHW
and CWS Connection
N/A
N/A
22mm
15mm
Gas
Connection
G1/2
G1/2
G1/2
G1/2
Condensate
Connection Overflow
22mm
plastic
22mm
plastic
22mm
plastic
22mm
plastic
Safety
Valve Connection Discharge
15mm
copper
15mm
copper
22mm
(D2)
22mm
(D2)
IP
Rating
IP20
(IPX0)
IP20
(IPX0)
IP20
(IPX0)
IP20
(IPX0)
Flue
and Air Intake Material : 50mm muPVC
(BS5255)/BSEN1566-1 (pipe) & BSEN1329
(fittings)
Max.
Flue Outlet Length
m
20
20
20
20
Max.
Total Flue Outlet and Air Intake Length
m
40
40
40
40
Flue
and Air Intake Material : 75mm Keston Composite
Max.
Flue Outlet Length
m
60
60
60
60
Max.
Total Flue Outlet and Air Intake Length
m
120
120
120
120
Performance
Data
Qudos
28h and 28hP
Qudos
28s and 28sP
Qudos
Duet 120/150/210
Qudos
Solar Duet 210
Max.
CH Input (Gross CV)
kW/(Btu/h)
29.4/(100,300)
27.8/(94,850)
29.4/(100,300)
27.8/(94,850)
Max.
Output to Water (80/60C Flow/Return)
kW/(Btu/h)
26.4/(90,500)
25.5/(87,000)
26.4/(90,500)
25.5/(87,000)
Max.
Output to Water (50/30C Flow/Return)
kW/(Btu/h)
28.4/(96,900)
28.4/(96,900)
28.4/(96,900)
28.4/(96,900)
Min.
Output to Water (80/60C Flow/Return)
kW/(Btu/h)
7.0/(24,900)
7.8/(26,600)
7.0/(24,900)
7.8/(26,600)
Max
Gas Cons After 10 mins
l/s/(ft3/hr)
0.76/(96.6)
0.35/(45.0)
0.76/(96.6)
0.35/(45.0)
Max
Operating Flow Temp.
C
82
82
82
82
Max
Pressure (Sealed System)
bar
2.5
2.5
2.5
2.5
Inlet
Gas Pressure
mbar/(in
wg)
20.0/(8.0)
20.0/(8.0)
20.0/(8.0)
20.0/(8.0)
Electrical
Supply
230V
50Hz
230V
50Hz
230V
50Hz
230V
50Hz
Power
Consumption (Max)
W
84
84
150
150
Power
Consumption (Standby)
W
8.5
8.5
8.5
8.5
Type
of Gas
G20
Nat
Gas
G31 LPG
G20
Nat Gas
G31
LPG
Optimum
Flue Gas CO2 Level (at max rate, case on)
%
9.1
10.5
9.1
10.5
SEDBUK
Efficiency*
%
91.1
(A)
93.1
(A)
91.1
(A)
93.1
(A)
NOx
Class
5
5
5
5
Safety
Valve bar/(lbf/sq in)
N/A
N/A
3/(43.5)
3/(43.5)
Expansion
Vessel Capacity litre
N/A
N/A
8
8
Expansion
Vessel Charge Pressure bar/(lbf/sq in)
N/A
N/A
1.0/(14.5)
1.0/(14.5)
GC
Number
41-930-19
41-930-20
41-930-17
41-930-18
CE PI
Number
87BR36
87BR36
87BR36
87BR36
*Subject
to confirmation
KESTON Boilers Limited, 34 West Common Road, Hayes, Bromley, Kent BR2 7BX, United Kingdom, Telephone: 020 8462 0262 Fax: 020 8462 4459 General Information: info@keston.co.uk Designed and built by PRG.
