Junkers SUPRAPUR KBR 120-3 A, Техническое руководство

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Accessories / Services
6 720 645 817 (2010/09)
49
7.5 Boiler safety set
A factory-prepared boiler safety set is available for the
Suprapur KBR ...
This set comprises the following:
•
Pressure gauge
•
Safety valve R 1 (for boiler size 120 kW)
•
Safety valve R 1¼ (for boiler sizes 160 kW to 280 kW)
•
Automatic air vent valve
•
Insulation, grey
Fig. 33 Boiler safety set
7.6 Safety equipment to DIN-EN 12828
As standard, the Suprapur KBR ... is equipped with a low
water indicator (minimum pressure switch) and boiler
drain & fill valve.
Fig. 34 Safety equipment to DIN EN 12828 for boilers
≤ 300 kW, operating temperature ≤ 105 °C
RK Boiler return
VK Boiler flow
1 Heat source
2 Shut-off valve, flow/return
3 Temperature controller (TR)
4 High limit safety cut-out (STB)
5 Temperature capturing facility
6 Diaphragm safety valve MSV 2.5 bar/3.0 bar or
7 Lift spring, safety valve HFS 2.5 bar
8 Pressure gauge
9 Low water indicator (WMS); not in systems ≤ 300 kW,
where instead a minimum pressure limiter or a replacement
measure approved by the manufacturer is provided for each
boiler
10 Non-return valve
11 Boiler drain & fill valve (KFE)
12 Expansion line
13 Shut-off valve - locked to prevent unintentional closure,
e.g. sealed cap valve
14 Drain upstream of diaphragm expansion vessel
15 Diaphragm expansion vessel (DIN-EN 13831)
1) At a shutdown temperature (STB) of 100 °C, the maximum
flow temperature would be 85 °C
The maximum flow temperature drops
through mixing to a lower temperature level
in the low loss header.
Max. boiler
flow
temperature
Δ
T on
primary
side of low
loss header
Δ
T on
secondary
side of low
loss header
Max. flow
temperature
for heating
system
[ °C] [K] [K] [ °C]
85 25
10 70
15 75
20 80
25 85
85 20
10 75
15 80
20 85
85 15
10 80
15 85
85 10 10 85
Tab. 26 Maximum possible flow temperature when using a
low loss header
6 720 619 235-119.1il
2
9
8
13
15
6/7
10
11
12
13
14
15
2 11
RK
VK
5
1)
4
1)
3
1)
1
≤
300 kW
6 720 642 877-32.1il