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Bosch Acu Tank AT 200 Instructions For Use And Maintenance Manual page 99

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Combined buffers for central heating and domestic hot water production | 99
3. Connecting the serpentines
(heat exchangers) with heating
installation using alternative and
renewable sources
ATTENTION! Qualified P&P spe-
cialist and technicians must per-
form all assembly works for con-
nection to the heat sources.
The connection of the serpentines (heat
exchangers) with the heating installation
should be done considering the marked out-
lets and inlets as described below:
IS1 (MS) – Inlet of heat exchanger 1; OS1
(ES) – Outlet of heat exchanger 1; IS2 (M)
– Inlet of heat exchanger 2; OS2 (E) - Outlet
of heat exchanger 2
Make sure that the system is empty of air.
The presence of air may cost incorrect work
of the boiler. Maximum temperature of the
heat transfer fluid: 110°C. Maximum pres-
sure of the heat transfer fluid: 0.6MPa! A
safety valve inline coil heat exchanger have
to be fit according to HVAC designer require-
ments but its adjustment must not be higher
than Pnr = 0.6MPa. (EN 1489:2000) An ex-
pansion vessel according to HVAC Designer
requirements must be installed!
Soft PU
Decorative plastic cover
Upper soft PU
Fig. 6
4. Connecting buffers to the central
heating loop. Examples. (Fig.8)
Buffers for central heating system are in-
tended for heat accumulation and stratifi-
cation with subsequent distribution of heat
flows with different temperatures to the spe-
cific consumers. As an example, on Fig.8 is
shown high and low temperature heating re-
alized by buffer. Heat demand is covered by
gas boiler and solar collectors.
ATTENTION! The buffer is a part
of a complete heating system that
must be designed and checked by
specialized and authorized per-
sonnel! The installation of a safety
valve with the exact release rate is
The maximum designed pressure
of the buffer is 3 Bars!


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