Viessmann Vitocrossal 300 Service Manual page 67

Vitocrossal 300 CU3A 26 to 57 Service
Solar
(continued)
Coding in the factory setting
09:130
0A:5
0B:0
0C:1
0D:1
0E:1
0F:70
10:0
The solar circuit pump stops
if the collector temperature
reaches 266°F (130°C)
(maximum collector temperature
to protect the system
components)
Temperature differential for
stagnation time reduction
(reduction in the speed of the
solar circuit pump to protect
system components and heat
transfer medium) 5 K.
Collector frost protection
function switched off
t monitoring switched on.
No flow rate captured in the
solar circuit, or flow rate too
low.
Night circulation monitoring
switched on.
Unintentional flow rate is
captured in the solar circuit
(e.g. at night).
Calculation of solar yield
with Viessmann heat transfer
medium
The flow rate in the collector
circuit at the maximum pump
speed is set to 1.8 USG (7 L/
minute).
Target temperature control
switched off (see coding
address "11").
Possible change
09:20 Temperature adjustable from
to 68 to 392°F (20 to 200°C).
09:200
0A:0 The differential between the
to set DHW tank temperature and
0A:40 the start point for reducing the
stagnation time can be adjusted
from 0 to 40 K.
0B:1 Collector frost protection function
switched on (not required with
Viessmann heat transfer medium).
0C:0
t monitoring switched off.
0D:0 Night circulation monitoring
switched off.
0E:2 Calculation of solar yield with water
as heat transfer medium (do not
select as operation is only possible
with Viessmann heat transfer
medium).
0E:0 Calculation of solar yield switched
off.
0F:1 Flow rate in the collector
to circuit adjustable from 1.6 to 6.7
0F:255 USG/minute (0.1 to 25.5 L/minute).
10:1 Target temperature control
switched on.
Coding 2
67