01202 662500
Dorchester DR-CC compact condensing water heater
- Fully automatic, simple to operate condensing direct fired water heater for domestic hot water.
- 9 models available with continuous outputs (@44°C ∆T) of 228, 233, 374, 461, 465, 602, 608 & 614 l/h.
Product information
Low power outputs 11-29kW and storage capacities of 162-384 litres.
Compact, standalone water heating unit for safe and clean domestic hot water generation.
No clearances required at the rear and minimal clearances at top and sides allow easy siting in any plant room.
Reduces energy use and running costs by maximising condensing water heater performance.
Meets the strict standards for efficiencies and NOx emissions (under 37 mg/kWh) in new buildings.
Load profiles of XL or XXL and an A rating ensure all models in the range are fully compliant with the ErP (Energy-related Products Directive) regulations.
Closely matches hot water demand, reducing wastage of energy.
Electronic Anode fitted as standard to protect against corrosion.
No top-to-bottom re-circulation kit required due to the heat exchanger coil positioned in the centre of the unit for even heat distribution and reduced likelihood of stratification.
Down firing pre-mix modulating burner reduces the risk of scale build up impacting on the heat transfer.
Natural gas and LPG water heater options.
All components accessible under front cover for ease of service and maintenance.
Flexible flue options (see optional extras tab and brochure for details).
Full project assistance available from our dedicated hot water expert to help with hot water sizing and selection of equipment to match the application.
Extensive back up and support from our team of experienced engineers across the UK.
Long-term commitment to spare parts.
BIM objects available to assist in design and management
Available for next day delivery (dependent on stock availability, charges apply, order cut-off 12pm).
Ideal uses/applications
New build projects.
Small to medium sized commercial and public buildings including schools, hospitals and hotels.
Smaller premises including school kitchens, hair salons, bed & breakfasts.
Optional extras
Unvented water supply kit - essential for any unvented application. Includes an expansion vessel sized for the water heater and local pipework only.
Room Sealed Flue Systems:
Concentric flue systems type C13–Horizontal termination.
Concentric flue systems type C33–Vertical termination.
Concentric flue systems type C43.
Twin duct flue systems type C53–Vertical flue termination with Horizontal air inlet.
Conventional Open Flue Systems:
Open flue systems type B23–Vertical termination.
Choose from a wide range of service contracts to help maintain optimum performance of your water heater.
Book commissioning at the same time as placing your order for improved warranty terms.
- Water
Units
DR-CC 12-160
DR-CC 12-200
DR-CC 20-160
DR-CC 20-200
DR-CC 24-245
DR-CC 24-285
DR-CC 32-245
DR-CC 32-285
DR-CC 32-380
Continuous output with 44°C ΔT
l/h
228
233
374
374
461
465
602
608
614
1st hour output with 44°C ΔT
l
360
470
510
620
740
820
870
960
1100
Continuous output with 50°C ΔT
l/h
201
205
329
329
406
410
530
535
540
1st hour output with 50°C ΔT
l
310
410
440
540
640
720
760
840
950
Continuous output with 56°C ΔT
l/h
180
183
294
294
362
366
473
478
482
1st hour output with 56°C ΔT
l
270
360
380
480
560
630
670
740
840
Storage capacity
litres
162
202
162
202
247
288
247
288
384
Maximum working pressure
bar
8
8
8
8
8
8
8
8
8
ErP load profile
-
XL
XL
XL
XL
XXL
XXL
XXL
XXL
XXL
- Energy
Units
DR-CC 12-160
DR-CC 12-200
DR-CC 20-160
DR-CC 20-200
DR-CC 24-245
DR-CC 24-285
DR-CC 32-245
DR-CC 32-285
DR-CC 32-380
Building Regulations thermal efficiency gross
%
96
98
95
95
96
97
95
96
97
ErP efficiency rating
-
A
A
A
A
A
A
A
A
A
Heating-up time, ΔT = 44°C
min.
27
41
17
27
25
31
20
24
31
Heating-up time, ΔT = 50°C
min.
31
47
19
30
29
35
22
27
36
Heating-up time, ΔT = 56°C
min.
34
52
22
34
32
40
25
31
40
Standby losses
kW/24h
2.16
2.3
2.16
2.3
2.64
2.97
2.64
2.97
2.9
- Nat Gas
Units
DR-CC 12-160
DR-CC 12-200
DR-CC 20-160
DR-CC 20-200
DR-CC 24-245
DR-CC 24-285
DR-CC 32-245
DR-CC 32-285
DR-CC 32-380
Input, gross – maximum
kW
12.1
12.1
20
20
24.4
24.4
32.2
32.2
32.2
Input, net - maximum
kW
10.9
10.9
18
18
22
22
29
29
29
Output – maximum
kW
11.7
11.9
19.1
19.1
23.5
23.8
30.7
31
31.3
Gas inlet pressure – nominal
mbar
20
20
20
20
20
20
20
20
20
Gas flow rate – maximum @1013.25 mbar and 15°C
m3/h
1.2
1.2
1.9
1.9
2.3
2.3
3.1
3.1
3.1
- LPG
Units
DR-CC 12-160
DR-CC 12-200
DR-CC 20-160
DR-CC 20-200
DR-CC 24-245
DR-CC 24-285
DR-CC 32-245
DR-CC 32-285
DR-CC 32-380
Input, gross – maximum
kW
11.8
11.8
19.6
19.6
23.9
23.9
31.5
31.5
31.5
Output – maximum
kW
11.4
11.6
18.7
18.7
23
23.3
30.1
30.4
30.7
Gas inlet pressure – nominal
mbar
37
37
37
37
37
37
37
37
37
Gas flow rate – maximum@1013.25 mbar and 15°C
kg/h
0.8
0.8
1.4
1.4
1.7
1.7
2.3
2.3
2.3
- Flue
Units
DR-CC 12-160
DR-CC 12-200
DR-CC 20-160
DR-CC 20-200
DR-CC 24-245
DR-CC 24-285
DR-CC 32-245
DR-CC 32-285
DR-CC 32-380
Flue gas temperature – maximum
°C
42
61
42
61
57
65
57
65
65
NOx emission, dry air free*
mg/kWh
22
22
30
30
33
33
37
37
37
Pressure at the flue outlet only (B23)**
Pa
33
33
59
59
108
108
192
192
192
- Electrical
Units
DR-CC 12-160
DR-CC 12-200
DR-CC 20-160
DR-CC 20-200
DR-CC 24-245
DR-CC 24-285
DR-CC 32-245
DR-CC 32-285
DR-CC 32-380
Start current–maximum (maximum power)
A (W)
25
25
36
36
51
51
85
85
85
Run current–maximum (maximum power)
A (W)
85
85
85
85
105
105
105
105
105
Electrical supply
Vac
230V 50Hz
230V 50Hz
230V 50Hz
230V 50Hz
230V 50Hz
230V 50Hz
230V 50Hz
230V 50Hz
230V 50Hz
Voltage tolerance
% of Vac
-15% +10%
-15% +10%
-15% +10%
-15% +10%
-15% +10%
-15% +10%
-15% +10%
-15% +10%
-15% +10%
- Misc.
Units
DR-CC 12-160
DR-CC 12-200
DR-CC 20-160
DR-CC 20-200
DR-CC 24-245
DR-CC 24-285
DR-CC 32-245
DR-CC 32-285
DR-CC 32-380
Noise level
dB(A)
41
41
52
52
53
53
58
58
58
Number of anodes
-
1
1
1
1
2
2
2
2
2
Weight when empty
kg
95
106
95
106
120
136
120
136
155
Approximate shipping weight
kg
114
122
114
122
136
153
136
153
172
Maximum floor load/ weight filled with water
kg
255
306
255
306
365
429
365
429
551
*European Class 6. Max (at part load) **with zero pressure at air inlet
Hamworthy Range Guide 0708