oventrop Regtronic RQ Installation And Operating Instructions For The Specialised Installer page 21

Heat pump mode
Main menu / Hot water / HP
Adjustment channel Description
HP Activation of the function
Limit temperature for the heat pump
T-HP opt
control (store mixing)
Speed HP Store mixing pump speed
back
Blocking protection
Main menu / Hot water / Blocking protection
Adjustment channel Description
Blocking protection Activation of the function
Adjustment range / selection Factory setting
Yes, No No
45 °C
20 ... 75 °C
100 %
30 ... 100 %
Adjustment range / selection Factory setting
Yes, No No
The HP mode can be used to force an afterheating,
when a heat pump is used for the store afterheating.
For that purpose, the store contents are mixed in or-
der to decrease the store temperature, which leads
to a heat pump demand.
When the heat pump mode has been activated, the
optimum operating temperature of the heat pump
T -HP opt must be adjusted in order to determine
the store fl ow sensor temperature from which on
the heat pump mode becomes active. When the heat
pump mode is active, the primary pump is run at the
adjustable Speed HP.
The heat pump mode becomes active in the follow-
ing cases:
• During sliding set value adaptation, the tempera-
ture at the store fl ow sensor falls below T-HP opt.
• T-HW set has been adjusted lower than T-HP opt
and the temperature at the store fl ow sensor falls
below the set temperature calculated.
Only after the cold start phase has been completed,
will the heat pump mode become active.
The Blocking protection function can be used for
protecting the pumps against blocking after standstill.
Blocking protection is executed daily at 12 o'clock.
It will energise relay 4 (primary pump) and, if the
circulation has been activated, relay 2 (circulation
pump) as well.
Pump runtime is 3 seconds. First, the circulation
pump starts. Then, the primary pump starts. The HW
heating, the hot start of the heat exchanger and the
circulation have a higher priority than the blocking
protection. In the case of a draw-off, the blocking
protection for the corresponding pumps is aborted.
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