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Hydraulic Components SDC / DHC
134 EN2H-0221GE51 R0808
Enabling of stage II (full load stage) is controlled not only by the
switching differentials but also by a time delay. In this way, stage
II remains disabled for the set delay so that stage I will be active
longer. This function is only effective during the start-up phase
(when there is demand for both stages). When stage I is in base-
load operation and stage II in adjustment operation (covering
excess heat demand), the latter is switched on immediately when
the demand arises.
In cascade mode, this setting would be superseded by the
cascade setting and is therefore not available.
The parameter "Enabling mode full-load stage" allows changing
the effect of a time delay stage II setting during the start-up
phase below the heat generator minimum temperature limit.
Unlimited enable during start-up relief
Both stages are in unlimited operating during start-up.
Time-out during start-up relief
Stage II is switched on after the set time delay acc. to time delay
stage II:
In cascade mode, this setting would be superseded by the
cascade setting and is therefore not available.
The function "hot-water loading mode stage 1-2" allows defining
of the loading mode for the hot-water heater with 2-stage or 2 x
single-stage heat generators. The following options are available:
• 2-stage hot-water circuit loading with delayed enabling of
stage II acc. to time delay stage II
• Unlimited 2-stage hot-water circuit loading
• Hot-water loading with stage I only; stage II disabled
In cascade mode, this setting would be superseded by the
cascade setting and is therefore not available.
5.4.6 "Heat generator" menu (HEAT GENER., pg. 99
When the actual outside temperature exceeds the set limit, all
demand on the heat generator is disabled within a device. The
heating circuits continue operating, but the heat generator will not
be switched on. The preset minimum burner running times are
Time delay stage II
NOTE
Enabling mode stage II
NOTE
Hot-water
loading mode
stage II
NOTE
See also
Outside temperature
disable