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Hydraulic Components SDC / DHC
216 EN2H-0221GE51 R0808
If the output is deactivated (de-energised), the buffer is loaded
(valve position A–AB, discharge deactivated).
If the output is activated (energised), only the top region of the
buffer is loaded (valve position B–AB, discharge activated)
Switching
differential:
SDHPE: 5 K (fixed)
Switch-on:
Buffer setpoint
Switch-off:
Buffer setpoint +5 K
7.3.9 Easy enabling and disabling of a heating pump
The stages of the heat generator (then heating pump) should be
able to switch off below a settable outside temperature.
OFF, -20 – +30
Special handling of heat generator version, setting 3:
With a setting of heat generator type 3 (2x single-stage), special
handling with regard to the outside temperature disable occurs so
that a heating pump can be combined with supplemental heat
generators. Below a set outside temperature, the heat pump (first
heat generator) is then disabled, but the supplementary heater
(second heat generator) remains enabled.
• If no "inverse outside temperature disable" was configured
("Heat Generator" menu, parameter 38 = OFF), a configured
"outside temperature disable" ("Heat Generator" menu,
parameter 25) occurs on both heat generators.
• If an "inverse outside temperature disable" was configured
("Heat Generator" menu, parameter 25 not OFF), the "inverse
outside temperature disable" acts on the first heat generator
(stage 1) and the "outside temperature disable" acts on the
second heat generator (stage 2).
A separate boiler sensor (BS2) must be configured for the second
heat generator.
Hydraulic function
Setting range
NOTE