COSMOGAS MYDENS, Installation, Use And Maintenance Manual

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11 MYDENS
COSMOGAS
4.2 - Characteristic curves
of the residual head at the
central heating plant
The residual head at the attachments of the MYDENS
boiler with standard pump is given as a graph in figures 4.4
and 4.5.
If the head is not sufficient, it is possible to request a 7
metre upgraded pump. In this case, the residual head can
be verified on the graphics in figures 4.6 and 4.7.
4 - OPERATION
Figure 4.4 - Residual head for MYDENS 24 with 6 metre pump (standard)
Figure 4.5 - Residual head for MYDENS 34 with 6 metre pump (standard)
You can request a modulating pump. In this case the
modulation range (particularly “x”) is verifiable on the graph
of figure 4.8.
ATTENTION !!! For MYDENS - “P” models it is
prohibited to use the selector switch on the pump to
modify its speed, as the domestic hot water production
efficiency deteriorate.
0
50
100
150
200
250
300
350
400
450
500
0 200 400 600 800 1000 1200 1400
Q (l/h)
H
(m
ba
r)
RIC16-2012_b
0
50
100
150
200
250
300
350
400
450
500
0 200 400 600 800 1000 1200 1400
Q (l/h)
H
(m
ba
r)
RIC16-2012_a