KOB KOB PYRTEC SERIES, Assembly And Installation Instructions Manual

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5 Water System Installation
Customers must ensure that there is a supply of
water independent of the electricity supply. This
(redundant) design ensures that in case of a power
failure, the boiler will be reliably cooled by the
thermal run-off safety valve.
Refer furthermore to the standards and regula-
tions listed in this document.
5.1 Safety Equipment
The safety equipment for the heating installation
must be carried out by the heating engineer
authorised to do so.
See Spec Sheet 6960 as an example.
5.2 Expansion
With closed expansion, the supply pressure to the
expansion tank should be equal to the max.
amount of the facility plus 0.2 bar.
5.3 The boiler circuit with return circuit
valve
To reliably prevent boiler corrosion through con-
densation of the exhaust gases, the boiler return
flow temperature must in no case be below 65°C.
The PYRTEC Grate Firing System is infinitely
variably output-controlled. For this, it is necessary
for there to be a constant flow through the boiler of
the water to be heated. The boiler circuit with the
boiler pump and boiler mixer must therefore be in-
stalled according to Spec Sheet 6960.
The design of the boiler circuit should be carried
out such that the temperature difference between
the forward flow and the return flow is equal to or
less than 15°C.
The triggering of the boiler pump and boiler control
valve is integrated in the control system that
comes with the facility.
5.4 The extinguishing water tank
A self-triggering extinguishing device must always
be installed by the furnace feed system. With re-
gard to the assembly, refer to the spec sheets in
the annex.
The functioning is carried out by means of an ex-
tinguishing valve and is not dependent on electric
current. A float-type switch monitors the water
level and should be electrically connected (see
connection diagram).
6 Electrical Installation
6.1 Positioning the control cabinet
The control cabinet with the control panel should
be installed by the installing electrical company at
a place easily accessible for control.
The position of the control cabinet should be se-
lected such that any negative influences by heat
radiation (front side of boiler, rear of boiler with ex-
haust gas collector and exhaust fan as well as ex-
haust line) or dust will be as low as possible during
cleaning.
The ambient temperature for the control cabinet
(approx. 10 cm away from the control cabinet)
should not exceed 40°C while the system is in op-
eration. 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
- This should be carried out according to the ter-
minal connection diagram. The terminal con-
nection diagram is located on the inside of the
door of the control cabinet that comes with the
facility.
- In the area of hot parts (exhaust gas fan, ex-
haust 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 equip-
ment must be executed so as to be dust-tight
and provided with a strain relief.
The regulations of the local electrical utility
company must be complied with.