Viessmann Vitotwin 300-W - Page 109

109
Function Code Operat-
ing level
Setting options Delivered
condition
"Relay output QX4" 5894 "F2" ■ "None"
■ "Alarm output
K10" (see
page 55)
■ "Circulating
pump Q4"
■ "Heat request
K27" (see
page 155)
■ "DHW ctrl el-
em Q3"
■ "Suppl source
control K32"
(see page 155)
"None"
"Sensor input BX6" 5935 "F2" ■ "Common
flow sensor
B10"
■ "Buffer sensor
B42"
"Buffer sen-
sor B42"
"Function input EX1"
(power demand function
see page 154)
5980 "F2" ■ "None"
■ "Ext heat dem,
rel Eng Bu"
■ "Auxiliary
burner lock"
"None"
"Cont type input EX1"
■ NC: Contact closed,
must be opened to acti-
vate
■ NO: Contact open, must
be closed to activate
5981 "F2" ■ "NC"
■ "NO"
"NO"
"Function input EX2"
(power demand function
see page 154)
5982 "F2" ■ "None"
■ "Ext heat dem,
rel Eng Bu"
■ "Auxiliary
burner lock"
"None"
Codes
Changing codes
(cont.)
5618 294 GB
Service