Roth BW/H Komfort, Installation Manual

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BW/H Komfort
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Store loading:
In order to realize the after-heating of a store within a cer-
tain store volume (zone), this function needs 2 sensors to
control switch-on and switch-off level.
The switching-on and -off temperatures of the „free“ ther-
mostat 3 (Th3 on and Th3 off) are regarded as reference
parameters. The reference sensors can be activated by Sen-
Th3 and Sen Th-4.
If the measured temperatures at both reference sensors
fall below the adjusted switching treshold Th3on, one relay
is switched-on. It is switched-off if the temperature at both
sensors is higher than Th3 off.
If one of the two sensors is faulty, the store loading is sus-
pended or broken off.
In addition to that, this option can temporally be blocked by
means of the daily timer 2.
After-heating-depression:
This function is activated if a previously selected solar store
(parameter: „Hz-suppr.St“ in the menu Solar - Expert) is
charged.
Solar means that this store loading is only made for energy
measurement and not for cooling purpose or something
else.
Activation:
Temperature sensor Th3 and sensor Th4
≤
Th3on
Deactivation:
Temperature sensor Th3 and sensor Th4
≥
Th3off
External heat exchanger:
This function is used for reasonable linking of charge circuits,
which are separated by an external heat exchanger (different
heat transfer media).
The heat exchanger relay is operated if the relevant sensor
shows a temperature which is by the adjusted value „heat
exchanger DeltaTon“ higher than the store temperature
and the switch-on conditions for store charge (see „store
charge“) are achieved.
The relay is switched-off if this temperature difference falls
below the adjusted switch-off difference WT-Delta Toff.
In contrast to the bypass function, a differential regulation
between T-WT and Tst can be realised by means of the heat
exchanger relay.
In systems in which stores are equipped with loading pumps,
the relay „external heat exchanger“ controls the primary
circuit pump.
Parallel relay: If the solar circuit pump(s) is/are switched-on, this relay is
parallely activated.
In 2-collector systems which are working with 2 pumps it is
activated if one of the 2 pumps are switched-on.
Activation: T-HE
≥
Tst + HE-
∆
Ton (collector circuit active)
Factory seeting: HE-
∆
Ton = 5,0 K
Dectivation: T-HE < Tst + HE-
∆
Toff
Factory setting: HE-
∆
Toff = 3,0 K
B