Benchmark RD 532 combi - Constant Hot Water Cycle Time (Service Function 6.8); Setting the Gas;Air Ratio

6 720 611 451 GB (03.11)
30
Individual settings
B Press and hold the and buttons simultane-
ously until the display shows ==.
The and buttons will light up.
Fig. 40
B Turn the temperature control until the display
shows 5.0.
After a short delay, the display then shows the set
heating output in percent.
Fig. 41
B Refer to the settings tables for heating and cylinder
charging output to obtain the relevant code for the
desired heating output in kW (see page 46).
B Turn the temperature control until the display
shows the desired code number.
The display and the and buttons will flash.
B Measure the gas flow rate and compare with the fig-
ures specified for the code number displayed. If fig-
ures do not match, adjust the code number!
B Press and hold the and buttons simultane-
ously until the display shows [ ].
The heating output is now stored.
Fig. 42
B Return the temperature controls and to their
original positions.
The display will revert to the CH flow temperate.
6.2.6 Constant hot water cycle time
(Service Function 6.8)
In Comfort mode “ECO light off” , the hot water inside
the appliance is held constantly at the set temperature.
For that reason, the appliance switches on if the water
temperature falls below a certain temperature. In order
to prevent it switching on and off too frequently, the
constant hot water cycle time service function allows
you to set the minimum period between switching off
and on again. This function has no effect on normal
demand for hot water and relates only to the constant
hot water function in Comfort mode.
The cycle time can be set to any period between 20 and
60 minutes (is factory set to 20 minutes).
6.3 Setting the gas/air ratio
The appliance is set at the factory and adjustment to the
CO
2
settings (gas/air ratio) is only required where the
appliance has been stripped down and assembled or if
the fan, burner or gas valve are replaced or the appli-
ance has been converted to a different gas type, see
section 7.
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