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3 Product description
3.1 Inputs and outputs
3.1.1 Gas burner
-weishaupt-
13
3
N
7
3
C
4
1
6
5
14
L
N
T1
T2
S3
B4
B5
T6
T7
T8
G
L/A
AM
FU
NA
P
TWI
8
11
15
12
X6
X7
F7
TWI
TWI interface (Vision Box)
P
free
NA
free
FC
free
AM
Operating panel of remote reset
L/A
Air damper actuator
G
Gas butterfly valve actuator
1
Slot analogue module EM3/3 or Fieldbus module EM3/2
1
External liquid petroleum gas valve
3C
Burner motor for continuous running fan
3N
Burner motor or valve continuous running fan
4
Ignition unit
5
Multifunction assembly or double gas valve
6
free
7
Bridging plug No. 7
8
Gas meter (impulse generator)
11
Air pressure switch
12
Low / valve proving gas pressure switch
13
Ionisation
14
Remote reset (plug cable No. 14 required)
15
Bridging plug No. 15 or high gas pressure switch
X6
7 pole connection plug
X7
4 pole connection plug
F7
Internal unit fuse (6.3 AT)
If a digital load converter (DLU) is used, this has to be replaced with the
analogue module EM3/3.
Installation and operating instruction
Replacing combustion manager W-FM 20 … 24 with W-FM 25
3 Product description
83294002 • 2/2014-11 • La
9-70
Summary of Contents for W-FM 25
Page 71: ...83294002 2 2014 11 La ...