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45
AST 14 C 257/00
BOILER CONFIGURATION
This board can be used to configure 3 different types of boiler, according to parameter P3
setting:
P3 = 1
Æ
instant plate comb i (model KC)
P3 = 2
Æ
heating only
(future implementation)
P3 = 3
Æ
heating only with tank heater
(model KR)
IMPORTANT: For this model, this parameter must be set to 1.
BOILER HYDRAULIC CONFIGURATION
For heating only boilers (KR) connected to a DHW system, the main board can manage
different hydraulic configurations, through the use of parameter P28 (default value = 0)
according to the different plant types.
These are the two possible configurations:
P28=0
, b oiler pump + three way valve: the DHW system is managed using both a pump
and a three way valve. The three way valve must be a spring return valve, and must be
connected to terminals 15 and 16 on main terminal board.
Warning: the three way valve must be installed giving the priority to DHW system (valve
normally open towards the DHW system).
P28=1
, doub le pump: the DHW system is managed using a dedicated external pump,
which must be connected to terminals 15 and 16 on main terminal board.
During DHW function, the main boiler pump is switched off.
Following are the electric layouts for the two cases:
sc
he
da
MV
D
HEATING
D.H.W .
PR
sc
he
da
PR
PS
PR
:
main boiler pump
MVD:
three way valve
PS:
DHW pump
Содержание FORMENTERA KC 24
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