Bosch Thermotechnik EMS 2 Manual De Usuario página 23

CH backup mixed (H) ( )
6 720 647 922-25.1O
Transfer system (I)
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Transfer system with HE (J)
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Therm.dis./daily heat-up (K)
Heat meter (L)
V
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Temp differential controller (M)
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Cylinder 3 with valve (N)
Table 3
MS 200
Mixed solar central heating backup with buffer or combi cylinder ( Fig. 21, page 174)
• Only available if Central heating backup (A) or Central heating backup cyl 2 (D) is selected.
• Function same as Central heating backup (A) or Central heating backup cyl 2 (D); in addition, the return
temperature is regulated to the specified flow temperature via the mixer.
Transfer system with solar-heated pre-heating cylinder for DHW heating ( Fig. 29, page 179)
• If the temperature of the preheating cylinder (cylinder 1 – left) exceeds the temperature of the standby
cylinder (cylinder 3 – right) by the set switch-on temperature differential, the transfer pump is switched on.
Transfer system with buffer cylinder ( Fig. 30, page 180)
• DHW cylinder with internal heat exchanger.
• If the temperature of the buffer cylinder (cylinder 1 – left) exceeds the temperature of the DHW cylinder
(cylinder 3 – right) by the set switch-on temperature differential, the transfer pump is switched on.
Thermal disinfection to prevent legionella ( HSE ACOP L8 for UK) and daily heating up of the DHW cylinder/s
• The entire volume of hot water is heated up on a weekly basis for half an hour to at least the temperature that
has been set for thermal disinfection.
• The entire volume of hot water is heated up on a daily basis to the temperature that has been set for daily
heat-up. This function is not executed if the domestic hot water has already reached the temperature within
the last 12 hours as a result of solar heating.
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In the solar system configuration, the illustration does not show that this function was added. "K" is added to the
designation of the solar system.
Selecting the heat meter enables the yield calculation to be activated.
• Based on the measured temperatures and the flow rate, the heat usage is calculated taking account of the
glycol content in the solar circuit.
In the solar system configuration, the illustration does not show that this function was added. "L" is added to the
designation of the solar system.
Notice: The yield calculation only provides correct values if the heat meter operates at 1 pulse/litre.
Freely-configurable temperature differential controller (only available when the MS 200 is combined with the
MS 100,  Fig. 32, page 181)
• A pump or a valve is controlled via the output signal depending on the temperature differential between the
temperature at the heat source and at the heat sink and the switch-on/switch-off temperature differential.
3nd cylinder with priority/secondary control via 3-way valve ( Fig. 34, page 183)
• Selectable priority cylinder (cylinder 1 – top left, cylinder 2 – bottom left, cylinder 3 – top right)
• Cylinder charging only switches over to the low priority cylinder via the 3-way valve if the high priority
cylinder cannot be heated any further.
• While the low priority cylinder is being heated, the solar pump is switched off at adjustable test intervals for
the duration of the test in order to check whether the high priority cylinder can be heated up (change-over
check).
6 720 807 456-03.1O
Product details | 23
6 720 815 257 (2014/10)