Rotex Controller Series, Product Documentation

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EbV Product documentation THETA NORM/UNIT
8-6
WW Loading Mode
Stage II (..22..) By means of the "1 or 2-stage Domestic Hot Water Loading Mode" the loading mode
for the hot water heater can be determined for 2 one stage or two-stage heat
generators. The following options are available:
• 2-stage DHW loading with delayed enabling of stage II according to the stage II
time delay.
• Unlimited two-stage DHW loading
• DHW loading with only stage I, stage II blocked
Note: This setting is overlapped by the cascade setting during cascade mode and is not
available.
Outside temperature
block: If the current outdoor temperature exceeds the set temperature limit, all demands of
one device to the heat generator are blocked. The heating circuits continue
operation, but the heat generator will not be switched on. Preset minimum burner run
times are fulfilled. Only when the outside temperature drops to the AT-disable level
minus 2K, the heat generator is enabled again. If several heat generators are
controlled though one device (condensing burners, 2-stage burners), all stages of the
device will be disabled.
Basic load
offset: This setting becomes effective only if several heat generators are operated in
cascade mode.
Burner stages operating as basic load are given a higher setpoint than the
modulating stage, which is switched on last. This higher value is composed of the
setpoint plus the set basic load offset. If several condensing boilers are switched
through one control, the setting applies to every heat generator.
Heat generator
Reset : With 2-stage heat generators, the counters for operating hours and burner starts can
be reset separately for stage 1 (
ST-1
) and stage 2 (
ST-2
).
Reset: With the reset indicator flashing (
RESET
) the reset-ready indicator (
SET
) will flash
when the rotary-push button is pressed briefly. A reset will be performed when the
rotary-push button is pressed for approx. 5 seconds.
Once the parameter settings have been reset, the device will jump back to the first
parameter on menu level
HEAT GENER.
.