Our P Series is a range of three-pass cast iron sectional boilers perfect for use with gas, light oil, dual fuel and bio-fuel through a pressure jet burner for commercial and industrial applications. Designed on the basis of the triple-pass principle to achieve maximum efficiency, the generously-sized chamber provides for optimal combustion and minimum NOx and CO2 emissions.
Compact yet extremely powerful, the P Series is available in two ranges: P420 and P520 (the P320 suitable for replacement projects only).
Due to changes in ErP regulations, from 1st January 2018, non-condensing Pressure Jet boilers replacements below 400kW can no longer be installed. So that we can be compliant with this regulation change, we can no longer take orders for the P-Series P320 range and the P420-8.
There are lots of options available to replace these products that are both highly efficient and compliant. Take a look at our other product ranges or speak to your Area Sales Manager who will be able to advise on the range of solutions available
Download literature and product documentation for the P Series by clicking the links below.
Click here for literature on controls.
Click to download the technical specification for the P Series in PDF format
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9-SECTION |
10-SECTION |
11-SECTION |
12-SECTION |
13-SECTION |
14-SECTION |
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|---|---|---|---|---|---|---|
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PERFORMANCE |
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Nominal heat output central heating operation @ 80/60°C kW (min-max)* |
450 |
540 | 600 | 670 | 720 | 780 |
|
EFFICIENCY |
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Efficiency – full load 100% NCV |
88% |
88% |
88% |
88% |
88% |
88% |
|
Seasonal efficiency GCV |
82.2% |
82.2% |
82.2% |
82.2% |
82.2% |
82.2% |
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BURNER TYPE / PRESSURE JET |
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Standard fuel |
Natural gas/oil (35 sec)/dual fuel |
Natural gas/oil (35 sec)/dual fuel |
Natural gas/oil (35 sec)/dual fuel |
Natural gas/oil (35 sec)/dual fuel |
Natural gas/oil (35 sec)/dual fuel |
Natural gas/oil (35 sec)/dual fuel |
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Max gas consumption |
Check burner details |
Check burner details |
Check burner details |
Check burner details |
Check burner details |
Check burner details |
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Oil consumption kg/hr @ 12 bar pump pressure |
43.33 |
52 | 57.77 | 64.52 | 63 | 75.11 |
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Min op gas pressure mbar |
Check burner details |
Check burner details |
Check burner details |
Check burner details |
Check burner details |
Check burner details |
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FLUE (CONVENTIONAL CONNECTION) |
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Flue diameter mm I/D |
250 |
250 | 300 | 300 | 300 | 300 |
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Chamber resistance mbar |
+1.5 | +2.0 | +2.5 | +2.5 | +2.5 | +3.5 |
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Flue gas flow rate kg/h gas |
810 | 972 | 1080 | 1207 | 1297 | 1450 |
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Min/max flue gas flow rate g/s |
4.1-15.1 |
4.1-20.7 |
5.9-30.1 |
6.5-39.5 |
8.0-52.8 |
76.9 max |
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Average flue gas temperature boiler temperature 80°C |
less than 220 |
less than 220 | less than 220 | less than 220 | less than 220 | less than 220 |
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Flue gas flow rate kg/h oil (full output 80/60°C) |
750 |
900 | 1000 | 1116 | 1200 | 1405 |
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HYDRAULICS |
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Water content litres |
409 |
452 |
495 |
538 |
581 |
624 |
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Resistance @ 11°C ΔT mbar |
39.7 |
66 |
82.6 |
109.2 |
132.17 |
162.23 |
|
Hydraulic resistance @ 20°C ΔT mbar |
12 |
20 |
25 |
33 |
40 |
49 |
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Nominal flow rate @11°C ΔT l/s |
9.77 |
11.73 |
13.03 |
14.55 |
15.64 |
16.94 |
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Nominal flow rate @ 20°C ΔT l/s |
5.38 |
2.85 |
3.18 |
3.54 |
3.8 |
4.12 |
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Min. flow rate l/s based on a ΔT of 45°C |
2.39 |
2.85 |
3.18 |
3.54 |
3.8 |
4.12 |
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Connection size BSP |
2.5" Flanged |
2.5" Flanged |
2.5" Flanged |
2.5" Flanged |
2.5" Flanged | 2.5" Flanged |
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Standard operating temperature °C ** |
80 |
80 |
80 |
80 |
80 |
80 |
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Max operating temperature °C |
90 |
90 |
90 |
90 |
90 |
90 |
|
Max water temperature °C |
110 |
110 |
110 |
110 |
110 |
110 |
|
Max water operating pressure bar |
6 |
6 |
6 |
6 |
6 |
6 |
|
Test press bar |
As per assembly manual |
As per assembly manual |
As per assembly manual |
As per assembly manual |
As per assembly manual |
As per assembly manual |
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Minimum return temperature °C |
50 |
50 |
50 |
50 |
50 |
50 |
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High limit set point °C |
110 |
110 |
110 |
110 |
110 |
110 |
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GENERAL |
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Shipping weight (kg) |
1650 |
1830 |
2010 |
2190 |
2370 |
2550 |
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Dimension (WxHxD inc. flow, return and gas pipework mm) |
1000 x 1690 x 1950 |
1000 x 1690 x 2120 |
1000 x 1690 x 2305 |
1000 x 1690 x 2465 |
1000 x 1690 x 2625 |
1000 x 1690 x 2785 |
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NOx (Dry, 0% 02) Mg/kWh |
37 |
37 |
32 |
29 |
35 |
35 |
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Noise levels dB(A) at 1 metre |
check burner details |
check burner details |
check burner details |
check burner details |
check burner details |
check burner details |
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Minimum operating gas pressure |
check burner details |
check burner details |
check burner details |
check burner details |
check burner details |
check burner details |
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Radiated losses (w) based on ΔT 45°C |
358 |
413 |
451 |
494 |
505 |
555 |
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Combustion chamber diameter |
530 |
530 |
530 |
530 |
530 |
530 |
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ELECTRICAL |
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Nominal power supply |
230v x 1Ph x 50hz |
230v x 1Ph x 50hz |
230v x 1Ph x 50hz |
230v x 1Ph x 50hz |
230v x 1Ph x 50hz |
230v x 1Ph x 50hz |
|
Start current amps |
1.8 |
1.8 |
1.8 |
1.8 |
1.8 |
2.2 |
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Power consumption W |
18-39 |
18-68 |
23-88 |
20-125 |
45-199 |
47-275 |
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Modulating input V dc |
0-10 |
0-10 |
0-10 |
0-10 |
0-10 |
0-10 |
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Fuse rating amps |
6.3 |
6.3 |
6.3 |
6.3 |
6.3 |
6.3 |
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Controls voltage |
24 (max 4va) |
24 (max 4va) |
24 (max 4va) |
24 (max 4va) |
24 (max 4va) |
24 (max 4va) |
|
Electrical protection index VAC |
X4D |
X4D |
X4D |
X4D |
X4D |
X1B |
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Nominal power supply |
230v x1ph x 50hz |
230v x1ph x 50hz |
230v x1ph x 50hz |
230v x1ph x 50hz |
230v x1ph x 50hz |
230v x1ph x 50hz |
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Fuse rating (amps) |
10 |
10 |
10 |
10 |
10 |
10 |
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*Gas consumption based on lower heating value under standard heating conditions: T=288.15K, p=1013.25mbar. Gag 30.33, G25 29.25, G31 88.00 MJ/m3 **Open vented option maximum operating temperature 75°C Note: 1 ph burners obtain their power supply via the boiler. Fuse rating amps: 10.4 mp 3ph burners require a 3ph supply + 1ph to the boiler |
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ENGINEERING EFFICIENCY SINCE 1935
OUT-OF-HOURS ENGINEER SUPPORT
