Below is the
technical specification for our range of Duet heating
units. Listed below this are the specification tables
for the Celsius 25 and Spa cylinders.
Technical
Specification
qDuet
120
qDuet
150
qDuet 210
Height
(mm)
1933
2120
1933
Width
(mm)
600
600
600
Depth
(mm)
625
625
875
Top
Clearance (mm)
100
100
100
Side
Clearance (mm)
25
25
25
Front
Clearance, for Servicing (mm)
400
400
400
Weight,
Empty (kg)
97
102
112
Weight,
Full (kg)
221
256
326
Spa
Water storage volume (litres)
120
150
210
Heating
Flow Connection (FI)
3/4
3/4
3/4
Heating
Return Connection (FI)
3/4
3/4
3/4
DHW
Connection (FI)
3/4
3/4
3/4
CWS
Connection (FI)
3/4
3/4
3/4
G3
D2 Pipe Size (up to 9m) (mm)
22
22
22
DHW
Re-Heat Time (45C rise) (mins)
23
25
35
Gas
Connection
Rp
0.5"F
Rp
0.5"F
Rp
0.5"F
Technical
Specification
Qudos 28s
Qudos 28sP
Max.
Input
k/W/(Btu/h)
29.4/(100,300)
27.8/(94,850)
Max.
Output to Water
(80/60C
Flow/Return)
k/W/(Btu/h)
26.4/(90,500)
25.5/(87,000)
(50/30C
Flow/Return)
k/W/(Btu/h)
28.4/(96,900)
28.4/(96,900)
Min.
Output to Water
(80/60C
Flow/Return)
k/W/(Btu/h)
7.0/(24,900)
7.0/(24,900)
(50/30C
Flow/Return)
k/W/(Btu/h)
7.8/(26,600)
7.6/(26,000)
Max.
Burner Press. - Hot (factory preset)
mbar/(in
w.g)
0 (0)
0/(0)
Gas
Consumption After 10 Mins.
l/s
/ (ft³/hr)
0.76/(96.6)
0.35/(45.0)
Max.
Operating Flow Temp.
°C
82.00
82.00
Max.
Press. (Sealed Systems)
Bar
2.5
2.5
Inlet
Gas Pressure
mbar/(in
w.g)
20.0/(8.0)
37.0/(14.8)
Recommended
Temperature Differential
°C
8
to 20
8
to 20
Electrical
Supply
230V
50Hz
230V
50Hz
Power
Consumption - inc. pump (Max)
W
150
150
Gas
Connection
Rp
0.5" F
Rp
0.5" F
Condensate
Connection
22mm
plastic overflow
Flue
Pipe (nominal bore)
mm/(in)
50/(2)
50/(2)
Air
Intake Pipe Size (nominal bore)
50/(2)
50/(2)
Flue
and Air Intake Material
muPVC
(BS5255)/BSEN
1566-18BSEN1329
Max.
Air Intake length
m
39
39
Max.
Flue Outlet Length
m
20
20
Max.
Total Outlet and Air Intake Length
m
40
40
Type
of Gas
G20
Natural Gas
G31
LPG
Optimum
Flue Gas CO2 Level
%
9.1
10.5
Destination
Countries
GB
/ IE
GB
/ IE
SEDBUK
Efficiency
Band
/ %
A
/ 91.1
A
/ 92.9
British
Gas GC no.
41
930 17
41
930 18
Technical
Specification
qSpa
120
qSpa
150
qSpa
210
Immersion
Heater Output
kW
3
3
3
Heat-up
Time 15-65 °C
mins*
23
25
35
Re-Heat
Time
mins**
17
17
22
Nominal
Size
mm
906 x 550
1093 x 550
1489 x 550
Stored
Water Capacity
Litres
120
150
210
Weight
(empty)
kg
35
40
50
Weight
(full)
kg
155
190
260
Coil
Flow/Return Connections
MM
22
22
22
Domestic
Water Connections
MM
22
22
22
Secondary
Return Connections
MM
N/A
N/A
22
Immersion
Heater Boss
BSP
1.5" F
1.5" F
1.5" F
Insulation
Thickness
mm
33
33
33
NB:
Figures are for guidance only and are based on
BS6700 recommendations.
*Heat-up from
15 to 65 °C with
constant 82 °C coil
flow temperature. ** Reheat times after 70% of
tank is drawn off and replaced with 15 °C water.
All
units are complete with factory fitted 3kW 1.5
inch immersion heater, 30 - 70 adjustable thermostat.
For a diagram
showing the main dimensions of the Duet click here.
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.
