7 Hydraulic connection
►
Vent the boiler using the valve
1
at the rear.
Abb. 2-51_037
►
Check pipework inside and outside the boiler for
leaks.
7.4 Connecting the safety valve's blow-
off line
Connect the hose to the safety valve
1
and run it to
the drain at the back of the boiler.
Abb. 2-52
7.5 Installing thermal overload protection
i
Thermal overload protection is only required
for the
pellet
elegance
24.
!
ATTENTION
–
Only standard-tested thermal overload pro-
tection may be installed (according to the
EN 14597 standard).
–
The cold water pipe must not be able to be
shut off and must permanently have a
minimum pressure of 2 bar; the water
temperature must not exceed 15°C. A flow
of 2 m³/h must be guaranteed.
–
The drain line must be routed freely into an
open drain funnel.
Connections, sensor
Abb. 2-53: Rear view of boiler
1 Connections for thermal overload protection
(1/2“ ET)
2 Sensor for thermal overload protection
i
The flow of the safety heat exchanger can be
in both directions.
►
Fit the thermal overload protection valve
before (as seen from the direction of flow)
the safety heat exchanger
(i.e. no water pres-
sure building up in the heat exchanger).
Abb. 2-54: Function of the thermal overload protection (schematic
representation)
32
Installation manual
pelletelegance
