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Design information
(cont.)
D
Buffer cylinder
E
More than 1 buffer cylinder as low loss header
(5 sensors)
F
Buffer cylinder 2
G
Buffer cylinder 1
H
Low loss header
Possible with large water volume in mains
L
TS131
(2 pce from Pyrotec 720)
Sizing recommendation
Trade name
Rated output
Boiler circuit
Thermally activated safety valve TS-131
Required water flow rate at 2.5 bar
Cylinder capacity
Supply line ZLg
Supply line ZLv
Drain line ALv
Safety valve type SV 68 M
Safety line SL
6.6 Electrical installation
This should be carried out in accordance with the wiring diagram. In
the vicinity of hot parts (flue gas fan, flue pipe), cables must be routed
in steel pipes for temperature protection with appropriate clearances.
Positioning of the programming module and control panel
The programming module should be installed by the electrical com-
pany responsible for installation in a place that is easily accessible for
operation. Optimal positioning of the control panel can minimise cable
lengths and therefore reduce costs. The location of the programming
module and control panel should be selected so that negative influence
caused by thermal radiation (boiler front panel, boiler back panel with
flue gas collector and flue gas fan, as well as flue pipe) and exposure
to dust during cleaning is minimised.
6.7 Safety equipment
Expansion
The required expansion vessels should be selected according to the
system-specific circumstances (pressure, water content, etc.).
Extinguishing facilities
A water extinguishing facility is required on the supply screw conveyor.
This facility is intended to reliably prevent burn-back in the event of a
fault (e.g. power failure).
For safety reasons and in order to avoid damage caused by flooding,
it is not advisable to connect the extinguishing facility directly to the
water mains. This extinguishing facility is equipped with an extinguish-
ing water container 25 l with float switch and an adjustable Danfos
extinguishing valve.
PYROTEC
M
Additional heat source controlled with a directional control valve
for
- Oil/gas boiler
- Electric heater
P
With additional heat source, dual mode
- Oil, gas, electric
M20 Boiler pump
Y20 Boiler mixer
KW Cold water supply min. 2.5 bar, max. 3.5 bar
kW
390
NW 80
pce
1
l/h
1637
l
3200
R
¾
R
¾
R
¾
R
1¼
NW 50
The cable entries for the motors and equipment should be dust-proof
and provided with strain relief.
The ambient temperature of the control panel (approx. 10 cm away
from the control panel) when operating the system must not exceed
40 °C. In case of doubt, the control panel should preferably be located
outside the boiler room near to the boiler room door.
Note
The regulations of the local power supply utility must be observed.
In the case of sealed expansion, the pre-charge pressure of the expan-
sion vessel should be equal to the max. system height plus 0.2 bar.
In accordance with TRVB 118, the container should be equipped with
fill level monitoring. The boiler automatically switches off in case of a
water shortage. In the case of excessive temperature, the supply
screw conveyor safety is flooded, but to a limited extent.
PYROTEC grate combustion
530
720
NW 80
NW 100
NW 125
1
2
2224
3020
3986
4300
5800
7600
¾
1
¾
¾
¾
¾
1½
1½
2x 1½
NW 65
NW 80
2x NW 65
950
1250
NW 125
2
2
5246
10000
1
1¼
¾
¾
¾
¾
2x 1½
2x NW 80
6
39
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