High efficiency combination boilers
27
Technical Data
Delta Performance
Delta Performance
Delta Performance
Delta Performance
25
35
45
55
Fuel
Oil (28 sec or 35 sec) or Natural gas
Burner options
Type
Pressure jet/ BG2000-S
Input
kW
25/33
33/45
42/61
50/69
Output
kW
22/29
29/40
38/54
45/62
Primary capacity
L
83
104
70
82
Total capacity
L
157
178
132
151
Heating surface area
m
2
1.59
1.59
1.99
2.46
Flue circuit pressure drop
mbar
0.02-0.09
0.08-0.09
0.01-0.08
0.02-0.05
DHW connection (male BSP)
Ø
3/4
"
3/4
"
3/4
"
3/4
"
Primary connection (female BSP)
Ø
1"
1"
1"
1"
Flue connection
Ø mm
130
130
150
150
Burner air intake connection
Ø mm
80 - BG2000-S
Weight empty
kg
145
156
168
200
Weight full
kg
302
334
300
351
Maximum operating temperature
°C
90
90
90
90
Maximum operating pressure Primary: 3 bar Secondary: 10 bar
Gas connection -
3/4
" (BG2000 burner )
Delta Performance
Delta Performance
Delta Performance
Delta Performance
25
35
45
55
Litres in first 10 minutes
40°C
268
285
316
362
Litres in first 10 minutes
45°C
230
230
283
283
Litres in first 10 minutes
60°C
170
170
186
186
Litres in first hour
40°C
806
1035
1284
1533
Litres in first hour
45°C
799
1027
1112
1403
Litres in first hour
60°C
568
727
867
977
Continuous flow 40°C
Ltrs/hr
645
900
1161
1405
Reheat time to 80°C
Min
32
29
16
16
Please Note:
Performance data assumes a primary flow temperature of 85°C and a domestic cold water supply of 10°C
Performance Data
25
35
45
55
A
1497mm
1697mm
1497mm
1697mm
B
542mm
542mm
542mm
542mm
C
818mm
818mm
818mm
848mm
E
360mm
360mm
390mm
390mm
F
200mm
200mm
200mm
200mm
Characteristics
Dimensions
1. Stainless steel inner tank
2. Primary heating circuit
3. Rigid polyurethane foam insulation
4. Stove enamelled metal casing
5. Flue
pipes
6. Stainless steel flue turbulators
7. Control thermostat pocket
8. Alternative primary water return
connection
9. Combustion
chamber
10. Combustion chamber plate
11. Primary drain connection
12. Top primary water flow and return
connections
13. Flue connection
14. Control panel
15. Domestic hot water outlet
16. Domestic cold water inlet
17. Lower limit thermostat and
thermometer pocket
18. Manual reset high limit thermostat
19. Oil or gas burner