Technical data

9
6 Electrical Installation
6.1 Positioning the control module and
control cabinet
Electrical company at a place easily accessible for opera-
tion should mount the control module. Optimum position-
ing of the control cabinet will allow minimisation of the
length of installation lines and thus of costs.
The position of the control module and control cabinet
should be selected such that the negative effect of heat
radiation (front side of boiler, rear side of boiler with ex-
haust gas collector and exhaust gas fan as well as exhaust
gas line) and interference caused by dust during cleaning
will both be kept as low as possible.
The ambient temperature for the control cabinet (approx.
(10 cm) 4’’ away from the control cabinet) should not ex-
ceed (40°C) 104°F while the system is in operation. In
case of doubt, preference should be given to placing the
control cabinet outside the heating room near the heating
room door.
6.2 Electrical connection
- Connect it according to the wiring plan, lying of the
CAN-BUS wire according to data sheet 4020.
- In the area of hot parts (flue gas fan, flue gas pipe), the
lines should be installed in steel pipes at an appropriate
distance so as to be temperature-protected.
- The cable bushings to the motors and equipment must
be executed so as to be dust-tight and provided with a
strain relief.
Attention:
This is not complete system drawing. The installer has re-
sponsibility to assure that the control is suitable for the re-
spective installation, and all necessary safety equipment is
installed.
Attention:
The information about wire type, wire number and wire
gauge, made in the wiring diagrams is not obligatory. The
final decision of these settings has to be done by the exe-
cuting installation company considering the local codes and
regulations .
7 Fire Protection
The fire protection regulations for wood heating systems
differ from country to country.
The regulations applicable to the respective location of in-
stallation must always be complied with.
7.1 Protection against burn-back for the
boiler plant
These are part of the scope of delivery for the PYRTEC
Grate Firing System.
7.1.1 Preventing overfilling of the fire box
A level monitor must be installed to prevent overfilling of
the firebox. The PYRTEC Grate Firing System has a light
barrier to monitor the embers.
7.1.2 Preventing burn-back
With a sensor directly on the insertion pipe, any danger of
burn-back beginning will be detected and quickly counter-
acted at an early stage through boosted output (an in-
crease in the advancing of the material).
As a result, any requirement for a protective device coming
into effect is avoided, and normal operation, defined as the
greatest possible degree of safety supplying heat, is ad-
hered to.
7.1.3 The back flash safeguard
The back flash safeguard is over 150 kW.
The PYROT Grate Firing System is always equipped with
an isolating layer and is continuously operated with nega-
tive pressure.
As a result the PYROT Grate Firing System is considered as
equipped with a back flash safeguard.
7.1.4 Boiler Feed Automatically Triggering Extinguishing
System.
A water extinguishing system is always necessary on the
feed auger.
This system should reliably prevent burn-back in case of a
malfunction (such as a power failure ). For safety rea-
sons and to prevent damage by flooding, connecting the
extinguishing system directly to the water network is not
advisable.
This extinguishing system must always be equipped with a
6.6 USG / 25l extinguishing water tank with a float-type
switch and an adjustable Danfoss extinguisher valve. The
tank for the SLE must be equipped with a level monitoring
system.
If there is a shortage of water, the PYROT Grate Firing Sys-
tem will switch off automatically. In case of excess tem-
perature, the feed auger will be flooded reliably but in a
limited fashion.
The heating contractor according to Spec Sheet 4550 must
carry out the piping for the extinguishing system.
7.2 Burn-back safeguard for the fuel supply
system (RSE)
The rest of the "burn-back protection for material trans-
port" depends on the respective requirements (location,
size of the fuel storage site, material, pressure conditions