Viessmann KOB PYROTEC, Technical Manual

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250
< 400
< 400
a b
250
< 400
250
e
d
c
250
Hatched surface Floor in heat-resistant version
Surface medium grey Boiler supporting surface
Foundation properties
Trade name
PYROTEC grate combustion
Rated output kW 390 530 720 950 1250
Part no: 7423 674 7423 675 7423 767 7423 677 7423 678
a mm 1026 1026 1112 1360 1360
b mm 1826 1826 1912 2160 2160
c mm 4221 4721 4912 5096 5641
d mm 1260 1260 1400 1630 1630
e mm 2561 3061 3112 3066 3611
Requirements of Sample Combustion Order
The installation room must meet the standards laid down by the "Fire
Regulations" of the respective country. Observe the Building Regula-
tions and Fire Regulations of the respective country of installation.
Emergency stop switch
The burner, the fuel supply equipment and the burner control units
must be able to be switched OFF at any time by an emergency stop
switch installed outside the installation room.
Provide a sign adjacent to the emergency stop switch with the inscrip-
tion "EMERGENCY STOP SWITCH - COMBUSTION".
Combustion air supply
For open flue combustion equipment with a total rated output in excess
of 35 kW, the fresh ventilation is deemed to have been verified if the
combustion equipment is located in areas which provide an aperture
or duct leading outdoors.
At 35 kW rated output, the cross-section of the aperture must be at
least 150 cm
2 . For every kilowatt rated output in excess of 35 kW, the
aperture must be 2 cm 2 larger than stated above.
Pipes must be sized to provide equivalent flow rates. The required
cross-section may be split over a maximum of 2 apertures or pipes.
A
A = 150 cm² + 2 kW
cm² x (Σ
²
n – 35 kW)
Σ
²
n
= total of all rated outputs in kW
Design information
(cont.)
PYROTEC
35
5822 511 GB
6