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
