Biofell Cascade
601130040 [Revision 1502.00] [subject to changes with no previous notice]
Page 9 of 20
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2
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8
1
Drain
2
Condensate collection
3
Water
4
Neutralization granulate
5
Filter
6
Grating
7
Siphon
8
Charcoal bag
9
Condensate
Figure 10
4
Fuel Installation
Biofell
boilers incorporate a modulating oil burner. For proper fuel installation, proceed according to each boiler’s instructions. Fuel installation and burner
start-up must be carried out by qualified, authorised personnel.
In order to ensure a correct fuel supply, a deaerator filter should be installed in the burner’s fuel vacuum cleaner for each of the modules.
5
Temperature Control
The accumulate temperature is controlled through a DHW sensor connected to the
M B3
input; and heating or primary temperature is controlled through a
probe placed in the balanced needle or exchanger plates primary connected to the input
M BX1
.
5.1
Heat Demand
5.1.1
Heating and DHW Controlled by Biofell’s Cascade System
Heating demand is managed via a voltage-free contact connected to
M H3
. The drive temperature can be adjusted manually at fixed temperature, or it can
be made to depend on the outside temperature by means of an external probe connected to
M B9
. To that effect the external probe mode must be enabled
on module 1 [parameter 1326], and the heating curve should be adjusted [parameter 1320].
The DHW storage tank temperature and the heat demand are managed through DHW probe connected between
M B3
. The DHW temperature is set with
parameter 1610.
5.1.2
Heating and DHW Controlled by an External Device (0-10 v)
The heat demand in the
Biofell
cascade system can be controlled and/or effected by a 0-10 VDC voltage obtained from an external upper control.
This properly polarized signal is connected to the module 1 through connection
M H3
, which must be configured as a "heat request" in the 5960 parameter.
The
Biofell
cascade system stops operation if the signal’s voltage falls below 1 V DC signal; or varies the setpoint temperature according to a curve
defined by the parameter 5964 (temperature set to 10 V).
5.2
Module Ignition Sequence
The ignition module will rotate depending on the number of operation hours set by the parameter 3540.
6
Electric Wiring
For communication, modules should be connected in parallel and comply with the polarity of the
MD BD
connection on all modules.
