TECHNICAL DATA
Table 1
Boiler 50 V 100 V 150 V 200 V 250 V 300 V 150 VA 250 H 300 H
No. of modules 1 2 3 4 5 6 3 5 6
Heat output kW 50 100 150 200 250 300 150 250 300
Btu/h x 10
3
170.6 341.2 511.8 682.4 853.0 1023.6 511.8 853.0 1023.6
Heat input kW 58.8 117.6 176.4 235.2 294.0 352.8 176.4 294.0 352.8
Btu/h x 10
3
200.6 401.3 601.9 802.5 1003.1 1203.8 601.9 1003.1 1203.8
Gas rate m
3
/h 5.5 11.0 16.5 22.1 27.6 33.1 16.5 27.6 33.1
ft.
3
/h 195 389 584 779 973 1168 584 973 1168
Flue gas mass
volume *
at 120ºC (248ºF)
g/s 25 50 75 100 125 150 75 125 150
l/s 27 55 82 110 137 164 82 137 164
ft.
3
/min 58 116 174 232 290 348 174 290 348
Required water
ow rate ± 10%
l/s 1.07 2.14 3.21 4.28 5.35 6.42 3.21 5.35 6.42
gal./min. 14.1 28.2 42.3 56.4 70.5 84.6 42.3 70.5 84.6
Hydraulic resistance 12.5 kN/m
2
(50 in w.g.)
Maximum static head** 2 m (6.5 ft.)
Maximum static head 60.0 m (197 ft.) 6.0 bar (85 lb/in
2
)
Electricity supply 230 V ~ 50Hz,
Power consumption W 90 180 270 360 450 540 270 450 540
Gas supply pressure
20.0 mbar (8 in. w.g.)
Boiler height
(overall)
mm 782 1432 1912 1550 2060 2060 1550 1480 1480
in. 30.8 56.4 75.3 61.0 81.1 81.1 61.0 58.3 58.3
Boiler width
(overall)
m m 475 942 955 1425 1441 1441 1425 1817 1817
in. 18.7 37.1 37.6 56.1 56.7 56.7 56.1 71.5 71.5
Boiler depth (overall) 698 mm (27.4 in.)
Weight of casing
and insulation
kg. 29.1 47.7 61.5 76.6 106.6 98.9 84.0 107.0 99.0
lb. 64.1 105.2 135.5 168.8 235.0 218.0 185.0 235.0 218.0
Weight of
modules
kg. 53 106 159 212 265 318 159 212 318
lb. 116 232 348 464 580 696 348 580 696
Weight of gas &
water headers
kg. - 34.0 53.6 59.4 89.4 94.3 53.4 92.2 96.7
lb. - 75 118 131 197 200 118 203 213
Water content
boiler
l. 4.5 11.9 20.7 26.2 37.7 44.5 21.7 39.7 44.5
gal. 1.0 2.6 4.6 5.9 8.3 9.9 4.9 8.8 9.9
Flow and return
connection
mm 40 50 65 65 80 80 65 80 80
in. 1
1
/2 2 2
1
/2 2
1
/2 3 3 2
1
/2 3 3
Gas connection Rc
3
/4 1 1
1
/4 1
1
/4 1
1
/2 1
1
/2 1
1
/4 1
1
/2 1
1
/2
in. BSP
3
/4 1 1
1
/4 1
1
/4 1
1
/2 1
1
/2 1
1
/4 1
1
/2 1
1
/2
Flue pipe size
(nominal bore)
mm 125 175 200 250 250 300 200 250 300
in. 5 7 8 10 10 12 8 10 12
Flue socket size mm 159 213 238 288 288 339 238 288 339
in. 6
1
/4 8
3
/8 9
3
/8 11
3
/8 11
3
/8 13
3
/8 19
3
/8 11
3
/8 13
3
/8
Injector size 7.3 mm (0.28 in.)
Type of gas Natural gas (G20 only)
* Flue gas volumes are calculated from a caloric
value of 38.4 MJ/m
3
(1,031 Btu/ft.
3
) at 15ºC and
1.013 bar - based on a CO
2
content of 9.0%.
** For further information on minimum head
requirements refer to page 10.
Notes.
Total weights of all headers, fully assembled.
The minimum gas supply pressure is with all modules ring.
Flange size; refer to BS.4504.
For 150 VA, 250 V and 250 H models ONLY, a ue adaptor is
supplied as standard.
GENERAL
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