3.5.2 Overpressure Relief Valve; 3.5.3 De-Aeration - Dik Geurts STORE Bedienungsanleitung

!Caution
The capillary tube of the thermal safety valve should never be
kinked, shortened or damaged.
Caution
!
The exit of the overflow pipe, must be mounted at a safe
location.
The exit of the overflow pipe should be mounted in such a way,
that no hazard can occur for the user. When this safeguard is
activated, water at approximately 100 °C will flow out of the
discharge pipe.
The connection of a thermal safety valve is displayed in a
diagram in appendix 4.
Caution
!
Make sure the exit of the discharge pipe of the thermal
safety valve can be checked for flow-through and leakage.
Caution
!
This connection pipe for the thermal safety valve must be
installed in a location where no frost can occur. Freezing
must be prevented at all times.
3.5.1.2 Operation of the thermal safety valve.
The thermal safety valve is a voltage free safeguard working on
cold mains water, which monitors the boiler temperature. When
the temperature at the valve's detector becomes too high, the
valve will open. In that case, cold mains water is sent through
the cooling coil in order to discharge excess heat. Mixing of
mains water and water from the heating system is not possible,
as the cooling coil is separated from the boiler.
The safety valve opens at 95 °C (+/-3 °C) and makes sure that
the boiler temperature remains below 110 °C.

3.5.2 Overpressure relief valve

If the pressure gets too high, this is harmful to the system.
In order to prevent this, the system is supplied with an
overpressure relief valve.
Caution
!
The overpressure relief valve should be installed at all
times! Without this valve, it is impossible to guarantee a
safe operation of the system.
For a safe and correct operation of the overpressure relief
valve, take the following into account:
- connect the overpressure relief valve to the fire;
- for this, use a pipe with a minimum diameter of ½";
- valves and resistors are not allowed in the pipe;
- use only one bend maximum.
The pipe from the overpressure relief valve to the discharge
must comply with certain requirements.
In case of a pipe with a maximum length of 2 metres:
- the maximum number of bends in this pipe is 2;
- the minimum diameter of this pipe ½";
- it may not have any valves and resistors.
In case of a pipe with a maximum length of 4 metres:
- the maximum number of bends in this pipe is 3;
- the minimum diameter of this pipe ¾";
- it may not have any valves and resistors.
Caution
!
If this valve has to be replaced, a valve with the exact same
specifications must be mounted.
Caution
!
Mount the blow-off pipe of the safety valve outside of the
direct reach of persons.
The safety valve must be mounted on an accessible location for
periodic tests.

3.5.3 De-aeration

A good de-aeration is very important for the system's operation.
For a good de-aeration, proceed as follows:
- at the back of the appliance you will find a 3/8" female
thread bush;
- mount a de-aeration device here;
- provide the system in the supply and return of de-aeration
facilities.
Caution
!
If air accumulates in the system, the pump will be unable to
transport the CH water properly.
In that case, because of temperatures that are too high,
the temperature safeguard may be activated before the
appliance supplies hot water to the system.
3.5.4 Boiling-dry safeguard
Caution
!
In a fire half-filled with water, steam can be generated,
which could lead to dangerous situations.
This will be the case when radiators, buffer vessels or other
water-filled elements within the system are below the level
of the stove. In order to prevent this, place a safeguard that
monitors the water level.
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