Econoflame R2700/R2800/R2900 boilers - CMS
Econoflame R2700/R2800/R2900 boilers - CMS
Econoflame R2700/R2800/R2900 boilers - CMS
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5.3.6 Condensate discharge<br />
Type Diameter ζ=1 Elbow Elbow Elbow 90° Tee<br />
in 90° 90° 45°<br />
mm R/D = 1 right angle ζ=0,5 ζ=2<br />
<strong>R2900</strong> 150* 3,7 1,9 4,9 1,9 7,5<br />
120 2,7 1,3 3,4 1,3 5,3<br />
R2901 150* 3,7 1,9 4,9 1,9 7,5<br />
120 2,7 1,3 3,4 1,3 5,3<br />
R2902 180* 4,6 2,3 5,9 2,3 9,1<br />
150 3,6 1,8 4,6 1,8 7,1<br />
R2903 200* 5,1 2,5 6,6 2,5 10,1<br />
180 4,4 2,2 5,7 2,2 8,8<br />
R2904 200* 4,8 2,4 6,3 2,4 9,6<br />
180 4,1 2,0 5,3 2,0 8,2<br />
R2905 250* 6,2 3,1 8,1 3,1 12,4<br />
200 4,5 2,2 5,8 2,2 8,9<br />
R2906 250* 6,1 3,1 8,0 3,1 12,3<br />
200 4,1 2,1 5,4 2,1 8,3<br />
R2907 250* 5,5 2,8 7,2 2,8 11,0<br />
300 7,0 3,5 9,2 3,5 14,1<br />
R2908 300* 7,4 3,7 9,6 3,7 14,8<br />
250 5,5 2,8 7,2 2,8 11,1<br />
R2909 300* 7,3 3,6 9,5 3,6 14,6<br />
250 5,5 2,7 7,1 2,7 10,9<br />
Table 11c Chimney losses <strong>R2900</strong> in metres of straight pipe<br />
* Connection at boiler.<br />
Example:<br />
A chimney Ø 200 mm for an R2704 requires 5 m of straight<br />
pipe, and 4 elbows 45 ° supplied by manufacturer x. These<br />
elbows have an equivalent pipe length resistance of 2,5 m each<br />
(table 11).<br />
The total losses will be equivalent to:<br />
5 x 1 = 5 m<br />
4 x 2,5 = 10 m<br />
total 15 m of straight pipe<br />
The maximum allowed is 70 m, this flue is acceptable (table 10).<br />
Condensate that forms in the appliance must be discharged to<br />
a drain.<br />
If there is no direct connection to a drain present, a water<br />
collection tank with a pump and a level switch may be used, so<br />
that the condensate can be pumped into a drain. The discharge<br />
of condensate into roof guttering is not permitted.<br />
The appliance is fitted with a water trap which prevents flue<br />
gasses from entering the boiler room.<br />
2789CV02C 35