Contractor Level Parameters - Wolf COB Installation Instructions And Technical Manual

Contractor level
Heating
contractor
Code scan
code NO
- - - -
Factory setting: 1
Frost protection limit
Parameter A09
A09
2.0
Factory setting: 2 °C
Setting range: -20 to +10 °C
Parallel DHW operation
Parameter A10
A10
0
Factory setting: 0
Setting range: 0 / 1
Maximum DHW temperature
Parameter A14
A14
65
Factory setting: 65 °C
Setting range: 60 to 80 °C
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19. Contractor level parameters
Press the r.h. rotary selector to change to control level 2. Turn the r.h. rotary selector
clockwise to select the contractor level and confirm the selection by pressing the r.h.
rotary selector again.
The display shows the code scan.
The correct code is set by pressing (display indication flashes) and then turning the r.h.
rotary selector from 0 to 1. After changing the code from 0 to 1, pressing the r.h. rotary
selector again confirms the setting; you are then at the contractor level.
The boiler circuit pump operates constantly if the outside temperature stays below
the selected value. The burner starts and heats the boiler to at least 20 °C if the boiler
water temperature falls below +5 °C.
Note:
Only change the factory setting if you can ensure that the heating system and its
components will not freeze up at low outside temperatures.
Incorrect operation can lead to system faults.
NB
Please note when adjusting parameter A09 (frost protection / outside
temperature), that frost protection is no longer safeguarded if you set
temperatures lower than 0 °C. This can lead to heating system damage.
The heating circuit pump is switched OFF during cylinder heating with DHW priority
(0). The boiler energy will then be used exclusively for DHW heating. The burner
shuts down and the heating circuit pump is started as soon as the cylinder has
reached its set temperature. The calorifier charge pump runs on in summer operating
mode for the period set in parameter HG19 (calorifier charge pump run-on time).
In winter operating mode the calorifier charge pump runs on for 2 min. following
successful calorifier charging.
The heating circuit pump continues to operate in parallel DHW mode (1). Cylinder
heating ends when the cylinder reaches the set water temperature. The calorifier
charge pump runs on in summer operating mode for the period set in parameter
HG19 (calorifier charge pump run-on time).
In parallel DHW mode (1), the heating circuit can temporarily be operated
NB
at a higher temperature.
Parallel operation in conjunction with a stratification cylinder is not recommended.
The maximum DHW temperature is factory-set to 65 °C. If, for commercial reasons,
a higher DHW temperature is required, a maximum temperature of up to 80 °C is
enabled.
If pasteurisation has been activated (BM), the DHW cylinder will be heated to the
selected maximum DHW temperature during the first cylinder heating of the day.
Take adequate measures to prevent scalding.
NB
Parameter HG22 (maximum boiler water temperature) should be set at
least 5 K higher than the selected maximum DHW temperature.
DHW temperatures of over 60 °C are not permissible in conjunction with
a TS stratification cylinder.
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