6
FAMILY CONDENS KIS - FAMILY CONDENS IS
0,0
0,2
0,4
0,6
0,8
1,0
1,2
1,4
1,6
1,8
2,0
2,2
2,4
2,6
2,8
3,0
3,2
3,4
3,6
3,8
4,0
4,2
4,4
4,6
4,8
5,0
5,2
5,4
5,6
5,8
6,0
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
Inlet
water
15÷20
limpid
Water in
heating
circuit
7÷8
-
-
um
°F
Parameters
PH
Hardness
Appearance
3 - PUMP DUTY
Family Condens
boilers
are fitted with a variable speed circulation unit that
is already connected up in terms of plumbing and electrics, and the usable
performance it provides is shown in the graph.
The boilers are fitted with an anti-blocking system that starts an operating
cycle every 24 hours when not used, irrespective of the position of the func
-
tion selector.
The “anti-blocking” function is only active when the electrical power
supply to the boiler is on.
Operating the circulation system without any water is strictly forbidden.
VARIABLE SPEED CIRCULATION UNIT
The modulating circulating function is only active for the heating function.
When switching the three ways on the plate heat exchanger, the circulation
unit is set at maximum speed. The modulating circulation function applies
only to the boiler circulation unit and not to circulation units on any external
devices connected to it (e.g. booster circulation unit).
Any of 4 operating modes can be chosen, depending on situations and the
type of plant.
By accessing parameter 90 in the technical menu, one of the following pos
-
sibilities can be chosen:
1 - VARIABLE SPEED CIRCULATION UNIT WITH PROPORTIONAL
MODE (41 <= P90 <= 90)
2 - VARIABLE SPEED CIRCULATION UNIT WITH CONSTANT DT MODE
(2 <= P90 <= 40)
3 - VARIABLE SPEED CIRCULATION UNIT WITH MAXIMUM FIXED
MAXIMUM SPEED MODE (P90 = 1)
4 – EXCEPTIONAL USE OF A STANDARD CIRCULATION UNIT WITHOUT
SPEED ADJUSTMENT (P90 = 0)
1 - VARIABLE SPEED CIRCULATION UNIT WITH PROPORTIONAL
MODE (41 <= P90 <= 90)
In this mode the boiler’s board determines what flow rate curve to adopt
according to the instantaneous power supplied by the boiler.
The boiler controller breaks down the power range within which the boiler
operates in heating mode into various levels. Depending on the power level
in use when heating, one of the speeds available is selected automatically
according to a linear logic: Maximum power = high speed, minimum power
= low speed.
This is used on all types of plants where the machine’s power has been
correctly balanced with the plant’s real needs.
Operationally:
- Access parameter 90
- Set the parameter = 41
Note
: The parameter 90 = 41 setting is recommended by the manufacturer.
Values exceeding 41 are used in specific cases.
2 - VARIABLE SPEED CIRCULATION UNIT WITH CONSTANT DT MODE
(2 <= P90 <= 40)
In this mode the installer sets the
∆
T value to be maintained between the
delivery and return (e.g. if a value of 10 is entered, the circulation unit’s
speed will change to implement a plant flow rate aimed at maintaining the
∆
T between upstream and downstream of the heat exchanger at 10°C).
By periodically sampling the values provided by the boiler delivery/return
sensors, the board increases or decreases the circulation unit’s speed
and therefore the plant’s flow rate. If the sampling shows a
∆
T value lower
than that set, the speed is reduced until the
∆
T increases to the value set.
Vice-versa is sampling is higher than the value set, the speed is increased.
This is used for direct high temperature plants (typical of replacement),
where the boiler is not thermostatically controlled, and where a calculated
∆
T can be set.
When working with a constant delivery temperature and attainment of
stabilising the ambient conditions, the average temperature of the radia
-
tors tends to increase. By keeping
∆
T constant, the reduction in the flow
rate is obtained by changing the operating curve, which produces a lower
return temperature that in turn favours high boiler performance and the
reduction of electricity consumption.
Operationally:
- Access parameter 90
- Set the parameter at a value between 2 and 40 (normally between 10
and 20).
3 - VARIABLE SPEED CIRCULATION UNIT WITH MAXIMUM FIXED
MAXIMUM SPEED MODE (P90 = 1)
In this mode the modulating circulation unit works constantly at maximum
speed.
It is used on plants with a high load loss in which the boiler’s head must be
used as much as possible in order to guarantee sufficient circulation (plant
flow rate at maximum speed lower than 600 litres per hour).
This is used when bottles of mixture are involved, with high flow rates in the
circuit downstream.
Operationally:
- Access parameter 90
- Set the parameter = 1
4 – EXCEPTIONAL USE OF A STANDARD CIRCULATION UNIT WITH-
OUT SPEED ADJUSTMENT (P90 = 0)
This mode must be used in exceptional cases in which the boiler is to be
used with a traditional circulation unit without a speed adjustment. It pre-
supposes that the adjustable speed circulation unit has been removed and
replaced with a non-adjustable speed circulation unit.
Warning !!!!
the BE06 board connected to connector CN9 must be re
-
moved and replaced with a connector with a jumper to be inserted into
connector CN9. This latter connection is obligatory and if not formed may
cause the system to malfunction.
Operationally:
- Access parameter 90
- Set the parameter = 0
chemically treating the system (e.g.: anti-freeze, film-formers, etc.), make sure
the characteristics of the water satisfy the parameters indicated in the table.
HIGH
TEMPERA
TURE
(
radiators without
thermostatic valves
)
LOW
TEMPERA
TURE
(
floor
)
∆
T constant
(
2 ≤ P90 ≤ 40)
EXTERNAL SENSOR YES
(HEAT REGULATION)
PROPORTIONAL
(P90 = 41)
EXTERNAL SENSOR NO
(NO HEAT REGULATION)
PROPORTIONAL
(P90 = 41)
PROPORTIONAL
(P90 = 41)
CONFIGURATIONS RECOMMENDED BY THE MANUFACTURER
HIGH
TEMPERA
TURE
(radiators with thermostatic
valves)
PROPORTIONAL
(P90 = 41)
PROPORTIONAL
(P90 = 41)
Residual head (m.c.a.)
Plant flow rate (l/h)
MAX
PUMP AREA MODULATION
MIN
If water hardness exceeds 28°Fr, it is recommended to use water softeners,
to prevent any limestone deposit in boiler due to excessively hard water.
Содержание Family Condens 2.5 - 3.5 IS
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Страница 144: ...144 FAMILY CONDENS KIS FAMILY CONDENS IS 2 IS DHW IS DHW DHW IS DHW DHW IS DHW S DHW IS S SERVICE IS DHW S DHW c...
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Страница 151: ...151 15 OFF 8 ENERGY FOR LIFE ENTER ESCAPE 21 10 3 PROG CODE ENTER ENTER A ENTER ENTER A ENTER ESCAPE ENTER ESCAPE 21...
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