Honeywell Krom Schroder PFU 780 - Air Valve Opens with Operating Signal

PFU 780 · Edition 02.12l 43
Parameters
4.7.7 Air valve opens with operating signal
t
SA
A8 07
04
t
t
FS
06
A
10a
22e
26a
16c
18e
2c–4c
18a
14a
88
10e
26e
30a
28c
2e–4e
6a–6e
V1
1
V2
2
ϑ1
ϑ2
2
1
PFU 780..L
A
P
L1
1
2
ϑ
VR..R
VAG
VBY
TZI
2
1
SPS
PLC
CPE
Parameter 30 = 3:
The air valve opens simultaneously with the operating
signal.
Application:
Two-stage-controlled main burner is switched ON/OFF
via the ϑ input.
The air valve can be activated externally via input 10a
for cooling the burner in the start-up position/standby.