Viessmann Vitotronic 300 Installation And Service Instructions Manual page 68
Type gw5b, vitotronic 300, type gw5b weather-compensated, digital boiler control unit for boiler model cm2 - 400, 500, 620 and 620 tx
Hide thumbs
Also See for Vitotronic 300:
- Installation and service instructions manual (164 pages) ,
- Operating instructions manual (73 pages) ,
- Technical data manual (8 pages)
Table of Contents
Advertisement
Code 2
"General" Group
Coding in the delivered condition
99:0
Connection at terminals 2 and 3 in plug
aVD disabled (External blocking/ External
"Mixing valve closed") (see page 23).
9A:0
Connection at terminals 1 and 2 in plug
aVD disabled (external "Mixing valve
closed") (see page 23).
9B:70
Set minimum boiler water temperature in
case of external demand 158°F (70°C).
9C:20
With LON communication module:
Monitoring LON participants. If there is no
response from a participant after 20 min,
the values specified inside the control unit
are used. Only then will a fault message
be issued.
9B:70
Do Not Adjust
9F:8
Differential temperature 8 K; only in
conjunction with heating circuits with
mixing valve M2 and M3.
68
(continued)
Vitotronic 300, GW5B Installation and Service
Possible change
99:1
No function.
99:2
External "Mixing valve closed" Heating circuit
with mixing valve M2 (heating circuit 2).
99:3
No function.
99:4
External "Mixing valve closed"Heating circuit
with mixing valve M3 (heating circuit 3).
99:5
No function.
99:6
External "Mixing valve closed"Heating circuits
with mixing valve M2 (heating circuit 2) and
M3 (heating circuit 3).
99:7
No function.
99:8
External blocking.
99:9
No function.
99:10
External blocking/External "Mixing valve closed"
Heating circuits with mixing valve M2 (heating
circuit 2) and M3 (heating circuit 3).
99:11
No function.
99:12
External blocking/External "Mixing valve closed"
Heating circuit with mixing valve M3
(heating circuit 3).
99:13
No function.
99:14
External blocking/External "Mixing valve closed"
Heating circuits with mixing valve M2
(heating circuit 2) and M3 (heating circuit 3).
99:15
No function.
9A:1
No function.
9A:2
External "Mixing valve open" Heating circuit
with mixing valve
9A:3
No function.
9A:4
External "Mixing valve open"
Heating circuit with mixing valve
M3 (heating circuit 3).
9A:5
No function.
9A:6
External "Mixing valve open" Heating circuits
with mixing valve M2 (heating circuit 2) and M3
(heating circuit 3).
9A:7
No function.
9B:0
Set value adjustable from 32 to 261°F
to
(0 to 127°C) (limited by boiler specific parameters)
9B:127
9C:0
No monitoring.
9C:5
Time adjustable from 5 to
to
60 min.
9C:60
--
9F:0
Differential temperature adjustable from
to
0 to 40 K.
9F:40
--
Advertisement
Table of Contents
