DeltaSol
®
E
© RESOL 20160310 DeltaSol_E_V2.monen.indd
| 26
Bypass:
Solar/Options/Bypass
selection: „Yes“, „No“
factory setting: „No“
In order to prevent energy from being extracted from the
store when starting store loading, this function makes sure
that the cold uid in the pipes is diverted past the store via
a bypass (valve or pump). Once the pipe is warm enough,
the store can be loaded.
The bypass relay is energised if the temperature at the
reference sensor is by 2,5 K higher than the store tem-
perature and if the switch-on condition for store loading
(see store loading) is fullled. The relay is switched-off if this
temperature difference is lower than 1,5 K. These tempera-
ture differences cannot be adjusted.
Variant valve:
Variant valve or bypass
Solar/Expert/Bypass
selection: „Valve“, „Pump“
factory setting: „Valve“
A bypass valve is placed into the solar circuit.
The solar heat exchanger is rst bypassed when store load-
ing is possible. If the above-mentioned switch-on condition
is fullled, the bypass relay switches the collector circuit via
the heat exchanger.
Variant pump: In this version, a bypass pump is placed in front of the col-
lector pump.
The bypass pump is rst activated when store loading is
possible. If the above-mentioned switch-on condition is ful-
lled, the bypass pump is switched-off and the collector
circuit pump is activated.
This variant is available in 1-collector systems only.
Bypass sensor:
Solar/Expert/Sen. Bypass
adjustment range: 1 … 10
factory setting: 3
The reference sensor is located in front of the valve or the
pump respectively. The default is sensor 3, but this can be
changed using this menu item.
External heat exchanger:
Solar/Options/Ext. heat. ex.
selection: „Yes“, „No“
factory setting: „No“
Solar/adj. values/he DTon
adjustment range: 2,0 … 19,5 K
factory setting: 5,0 K
Solar/adj. values/he DToff
adjustment range: 1,5 … 19,0 K
factory setting: 3,0 K
Solar/Expert/Sen. Ext. HE
adjustment range: 1 … 10
factory setting: 3
This function is used to link loading circuits that are sepa-
rated by an external heat exchanger.
The heat exchanger relay is activated if the temperature at
the reference sensor exceeds the store temperature by the
adjusted value “HE DTon“ and if the switch-on conditions
for store loading (see “store loading“) are fullled.
The relay is switched-off if this temperature difference falls
below the adjusted switch-off difference HE-DToff.
In contrast to the bypass function, a differential regulation
between “T-HE“ (“Sen. Ext. HE“) and “Tst“ can be carried
out by means of the heat exchanger relay.
The reference sensor (“Sen. Ext. HE“) can be arbitrarily
allocated.
In systems in which stores are equipped with their own
loading pumps, the relay “external heat exchanger“ con-
trols the primary circuit pump.