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Attaching pellet hoses
Installation
Install the thermal emergency cooling valve on the
boiler. The connections for the safety heat exchanger
are on the opposite side of the boiler.
Fig. 9-48: Thermal emergency cooling valve
Installing the safety valve, pressure gauge and
bleed valve
A safety valve, pressure gauge and bleed valve must
be installed on the boiler. They are not included in the
delivery scope.
DANGER!
Safety valve outlet
The safety valve outlet must be directed to the ground
in a pipe so nobody is endangered by hot water or
steam.
The safety valve outlet must be fed to the sewage
system (e.g. duct) via a clearly visible, open route
(siphon funnel), This will ensure that malfunctions,
especially a failure of the safety valve to close, can
be detected. If no connection is available to the
sewage system, the outlet must be directed to the
ground in a pipe.
9.11
Attaching pellet hoses
Note instructions about laying pellet hoses
When laying the pellet hoses, take note of the
comments; see
11.7 "Information about pellet
.
Reinforced pellet hoses are required
Reinforced pellet hoses are also required due to the
higher pellet discharge rate. They have a larger
external diameter and require larger hoses clamps. All
these components are available separately from ETA.
Mounting fire protection sleeves (if required)
If the pellet hoses from the storeroom are routed
over a fire section (for example a room in-
between) to the boiler room, fire protection sleeves
must be fitted over both pellet hoses. In wall ducts, a
fire protection sleeve must be mounted on each side,
with ceiling ducts only positioned on the ceiling side.
Fig. 9-49: Fire protection sleeve
Use the supplied concrete screws to fasten the fire
protection sleeve. These screws are screwed directly
into the wall by pre-drilling, but without dowels.
In the event of a fire, the internal material of the fire
protection sleeve expands and thus closes the pellet
hoses. This prevents burn-back in rooms through
which the pellet hoses are fed.
CAUTION!
The copper wires must have good contact with the
connections for the pellet hoses.
Otherwise the hoses will not be earthed with the boiler
and there is a risk of electrostatic charge build-up.
Remove the paint or the coating from both pellet
hose connections.
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