Extension Of Combustion Chamber Screw Conveyor; Design Information 6. 1 System Design; Selection Of Rated Output; Flow Temperatures - Viessmann KOB PYROTEC Technical Manual

Installation accessories

Extension of combustion chamber screw conveyor

Part no. 7388 037
Note
Per metre
Design information
6.1 System design

Selection of rated output

Select the wood boiler according to the required heat load. The Pyrotec
should be planned as a base load boiler and always operated in con-
junction with a buffer cylinder (management). The correct system
design point therefore does not depend on the nominal load specifi-
cation (i.e. the building heat load) but rather on the required duration
of use (length of the heating period, heat demand).

Flow temperatures

To minimise distribution losses, we recommend that you size the heat
distribution system and the DHW heating to a max. flow temperature
of 70 ºC.

Safety temperatures

The boilers comply with EN 303 and DIN 4702, and all are CE-desig-
nated and can be used in sealed heating systems as per EN 12828.

6.2 Delivery

KÖB delivers to the site. The system is unloaded on site.
A special crane is required on site for unloading.
The personnel carrying out transportation must be aware of any acci-
dent hazards. These hazards are to be prevented by suitable coun-
termeasures.

6.3 Handling

The combustion base has four eyes that must be screwed in before
lifting. Lifting gear can be attached to these eyes.
The heat exchanger of the PYROTEC has two lifting eyes to which
lifting gear may be attached.
A special crane (on site) is required to lift the combustion block and
heat exchanger.
PYROTEC
(cont.)
Note
In places more than 1800 metres above sea level, the project enquiry
must include information about the exact geographical location (alti-
tude and address of the location).
For wood boilers supplied with a boiler control unit, the max. boiler
water temperature is limited to 85 ºC. The flow temperature may be
increased by adjusting the control thermostat.
■ Permissible flow temperatures (= safety temperatures):
■ Max. possible flow temperature:
■ High limit safety cut-out of the boiler control unit:
Only lift the boiler when it is completely empty (water, fuel, ash).
To lift the combustion base, lifting eyes should be screwed to the points
provided. After unloading, the lifting eyes must be removed.
The heat exchanger is lifted by the lifting eyes provided for this pur-
pose, placed on the combustion base and then secured to it with
screws.
Our experts can undertake the handling and installation on prepared
foundations upon request (chargeable option).
Recommended minimum clearances to walls for installation and main-
tenance work must be observed.
An anti-vibration boiler support should be provided if anti-vibration
measures are required.
Up to 110 ºC
To EN 12953: up to 120 ºC
Approx. 15 K below the safety temperature
Delivered condition 110 ºC
Adjustable to 100 ºC
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