Technical data

Vitodens 200-W B2HA 19, 28, 35 Service
59
5683 702 - 07
Coding 2
Solar (continued)
Coding in the factory setting Possible change
11:50 Set DHW tank temperature for
solar 122° F (50° C).
- Target temperature control
switched on (code 10:1):
Temperature at which the solar
heated water in the DHW tank
is to be stratified.
- Extended control functions set
to heat two DHW tanks (code
20:8):
If the actual temperature of a
DHW tank reaches the selected
set DHW tank temperature,
heating is switched to the
second DHW tank.
11:10
to
11:90
The set DHW tank temperature for
solar can be adjusted from 50 to
194° F (10 to 90° C).
12:20 Minimum collector temperature
68° F (20° C).
The solar circuit pump is only
started when the set minimum
collector temperature is exceeded
at the collector temperature
sensor.
12:0 Minimum collector temperature
function switched off.
12:1
to
12:90
Minimum collector temperature
adjustable from 34 to 194° F
(1 to 90° C).
20:0 No extended control functions
enabled.
20:1 Auxiliary function for DHW heating.
20:2 Differential temperature control 2.
20:3 Differential temperature control 2
and auxiliary function.
20:4 Differential temperature control 2
for central heating backup.
20:5 Thermostat function.
20:6 Thermostat function and auxiliary
function.
20:7 Solar heating via external heat
exchanger without additional
temperature sensor.
20:8 Solar heating via external heat
exchanger with additional
temperature sensor.
20:9 Solar heating of two DHW tanks.
22:8 Start temperature differential
for central heating backup: 8 K.
(code 20:4 must be selected)
22:2
to
22:30
Start temperature differential
for central heating backup is
adjustable from 21 to 30 K.