Bosch Uni Condens 8000 F - 13 Safety Equipment; Arrangement of Minimum Safety Equipment in; Accordance with BS en 12828:2012

Safety equipment
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Uni Condens 8000 F – 6720867056 (2016/10)
13 Safety equipment
Further safety accessories are listed on the Bosch Commercial and
Industrial website.
13.1 Arrangement of minimum safety equipment in
accordance with BS EN 12828:2012
Boiler 300 kW; operating temperature 105 °C; shutdown
temperature(high limit safety cut-out) 110 °C – direct heating
Fig. 43 Safety equipment in accordance with BS EN 12828:2012 for
boilers > 300 kW with high limit safety cut-out (STB) ≤ 110 °C
RK Boiler return
VK Flow
[1] heat source
[2] Shut-off valve, flow/return
[3] Temperature controller
1)
[4] High limit safety cut-out
1)
[5] Temperature capturing facility
1)
[6] Diaphragm safety valve MSV 2.5 bar/3.0 bar or
[7] Pressure relief valve HFS ≥ 2.5 bar
[8] Flash trap; not required in systems > 300 kW if a high limit safety
cut-out (with a limit of ≤ 110 °C) and a maximum pressure limiter
are additionally provided for each boiler.
[9] Maximum pressure limiter
[10] Pressure meter
[11] Low water indicator; not in systems ≤ 300 kW, where instead a
minimum pressure limiter or a replacement measure approved by
the manufacturer is provided for each boiler.
[12] Non-return component
[13] Drain & fill valve (DFV)
[14] Safety pipe
[15] Shut-off valve – protected against unintentional closure, e.g. by
sealed cap valve
[16] Drain upstream of the expansion vessel
[17] Expansion vessel (EN 13831)
[18] Filling facility
[19] Suitable device for separate heating from potable water system
[20] Boiler safety assembly drain valve (manostat bar)
The figures provide a schematic representation of the safety equipment
in accordance with BS EN 12828:2012 for the system version listed
here - no claim is made as to their completeness. Practical
implementation is subject to currently applicable technical rules.
▶ Observe country-specific limits.
Low water indicator to protect against overheating
In accordance with BS EN 12828:2012, a low water indicator is
required to protect the boiler against overheating. BS EN 12828:2012
permits an approved minimum pressure limiter as an alternative to the
low water indicator.
2
11
9
20
15
6/7
12
18
14
15
16
17
2
13
RK
VK
8
0,5 %
P
1
> 300 kW
10
5
1)
4
1)
3
1)
0010011778-001
19
1) The maximum achievable flow temperature in combination with control units in
the CFB 800/CFB 900 series is around 18 K below the cut-off temperature of the
high limit safety cut-out.
The maximum achievable flow temperature in combination with control units of
the CC 8000 series is around 12 K below the cut-off temperature of the high limit
safety cut-out.