Internal H2 Extension - Viessmann VITODENS 200-W B2HA Installation And Service Instructions Manual

Function description
Internal extensions (accessories)
The internal extension is integrated into the control unit
enclosure. The following alternative functions can be
connected to relay output
via parameter/coding address "53" in the "General"
group:
Central fault message (parameter/code "53:0")
■
DHW circulation pump (parameter/code "53:1") (only
■
for weather-compensated operation)
Connect DHW circulation pumps with standalone
functions directly to the 230 V

Internal H2 extension

Fig. 60
The internal extension is integrated into the control unit
enclosure. The following alternative functions can be
connected to relay output
via parameter/coding address "53" in the "General"
group:
■ Central fault message (parameter/code "53:0")
■ DHW circulation pump (parameter/code "53:1") (only
for weather-compensated operation)
Connect DHW circulation pumps with standalone
functions directly to the 230 V
102
(cont.)
. The function is assigned
sK
∼
supply.
. The function is assigned
sK
∼
supply.
Heating circuit pump for heating circuit without mixer
■
(parameter/code "53:2")
■ Circulation pump for cylinder heating (parameter/
code "53:3")
An external safety valve can be linked to connection
.
gD
■ Heating circuit pump for heating circuit without mixer
(parameter/code "53:2")
Circulation pump for cylinder heating (parameter/
■
code "53:3")
An extractor fan can be switched off via connection
when the burner starts.
aBJ