Roth BW/H Komfort HE, Руководство для специализированного ремесленника

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34
en
Bypass
The Bypass function can be used for avoiding an energy loss from the store di-
rectly after loading has started. The still cold heat transfer medium in the pipework
is diverted through a bypass past the store. Once the pipe is warm enough, the
store can be loaded.
Variant valve: Variant pump:
Bypass sensor
Relay
Bypass sensor
Relay
Variant valve (inverted):
Relay
Bypass sensor
Exemplary schematics for the bypass variants
Solar / opt. functions / Add new function / Bypass
Adjustment
channel
Description
Adjustment range /
selection
Factory setting
Collector Collector fi eld system dependent
system dependent
Relay Bypass relay system dependent system dependent
Variant Variant (pump or valve logic) pump, valve pump
Inverted Valve logic inversion Yes, No No
Sensor Bypass sensor system dependent system dependent
∆
Ton
Bypass switch-on temperature difference 1.0 … 20.0 K 6.0 K
∆
Toff
Bypass switch-off temperature difference 0.5 … 19.5 K 4.0 K
Funct. Activation / Deactivation Activated, Deactivated Activated
Depending on whether the bypass is energised by a valve or by a second pump, a
corresponding adjustment can be made in the menu item Variant. Depending on
the variant, different control logics are applied:
Pump:
In this version, a bypass pump is placed in front of the collector pump.
The bypass pump is fi rst activated when store loading is possible. If the temper-
ature difference between the Bypass sensor and the store sensor reaches the
Bypass switch-on temperature difference, the bypass pump is switched off
and the solar pump is switched on instead.
Valve:
A bypass valve is placed into the solar circuit.
The solar heat exchanger is fi rst bypassed when store loading is possible. If the
temperature difference between the Bypass sensor and the store sensor reaches
the Bypass switch-on temperature difference, the bypass relay operates the
valve and solar loading starts.
When the valve variant is selected, the option Inverted is additionally available.
When the Inverted option is activated and the bypass circuit becomes activated,
the relay switches on. If the temperature difference between the Bypass sensor
and the store sensor reaches the Bypass switch-on temperature difference,
the relay switches off.