95
EA1 extension
Fig. 55
F1
MCB/fuse
DE1 Digital input 1
DE2
Digital input 2
DE3
Digital input 3
0
–
10V 0
–
10 V input
fÖ
Power supply
fÖ
A
Power supply for additional accessories
aBJ
Central fault message/feed pump/DHW circula-
tion pump (potential-free)
Connect DHW circulation pumps with stand-
alone functions directly to the 230 V
∼
supply.
aVG
KM BUS
Digital data inputs DE1 to DE3
Alternatively, the following functions can be connected:
■
External operating program changeover for each
heating circuit
■
External blocking
■
External blocking with fault message input
■
External demand with minimum boiler water temper-
ature
■
Fault message input
■
Brief operation of the DHW circulation pump
External contacts must be potential-free. When making
the connection, adhere to the requirements of protec-
tion class II: 8.0 mm air and creep paths and 2.0 mm
insulation thickness against 'live' components.
Input function assignment
Select the input functions via the codes in the
"Gen-
eral"
group at the boiler control unit:
■
DE1: coding address 3A
■
DE2: coding address 3b
■
DE3: coding address 3C
Assigning the operating program changeover
function to the heating circuits
Select the operating program changeover function for
the respective heating circuit via coding address d8 in
the
"Heating circuit"
group at the boiler control unit:
■
Changeover via input DE1: code d8:1
■
Changeover via input DE2: code d8:2
■
Changeover via input DE3: code d8:3
The effect of the operating program changeover is
selected via coding address d5 in the
"Heating cir-
cuit"
group.
Function description
External extensions (accessories)
(cont.)
5686 293 GB
Functions
Содержание J3HA
Страница 10: ...10 2x 1 2 4 3 Fig 2 Installation sequence Mounting the boiler and making connections 5686 293 GB Installation ...
Страница 21: ...21 2 3 2x 1 Fig 14 Installation sequence Fitting the front panel 5686 293 GB Installation ...
Страница 78: ...78 Troubleshooting Maintenance cont 5686 293 GB Diagnosis ...
Страница 90: ...90 0004 0006 0005 0003 0001 0002 Fig 51 Parts lists Miscellaneous assembly 5686 293 GB Components ...
Страница 114: ...114 5686 293 GB ...
Страница 115: ...115 5686 293 GB ...