Selection Guide - Lowara 001075038 Directives D'installation Et D'utilisation

en en en en
Model Model Model Model A A A A
mm mm mm mm
MMW07 MMW07 127
MMW07 MMW07
MMW12 MMW12 127
MMW12 MMW12
MMA07 MMA07 MMA07 MMA07 126
MMA12 MMA12 126
MMA12 MMA12

3 3 3 3 SELECTION GUIDE

SELECTION GUIDE
SELECTION GUIDE SELECTION GUIDE
34
B
F
B B B B C C C C
mm mm mm mm mm mm mm mm
370 166
370 166
360 163
360 163
Fig.3
For a correct selection of pump in the variable speed systems, all
operation range (Q-H) of pump must be considered (Fig. 3). As the
pump works, for the most part, a partial load, the best efficiency
point (
η
(Qmax). In a correct selection, the efficiency corresponding to the
maximum required flow (Qmax) shall not be less than 10% of the
value of maximum efficiency (
D D D D E E E E
mm mm mm mm mm mm mm mm
186
186
202 242
202 242
) should not coincide with the point of maximum work
opt
η
D
E
MMA
F F F F G G G G
mm mm mm mm mm mm mm mm
282 222
282 222
).
opt
Fig.2
H H H H
mm mm mm mm
1" 1/4
1" 1/4
-
-