Boiler Tightness; Ventilation; Supply Air Ventilation; Exhaust Ventilation - Orlanski ORLIGNO 500 Instruction Manual & Service Manual

7. Boiler tightness

It is very important to assure boiler tightness especially: door tightness. Leakiness causes that fumes
may get out to the boiler room and lead to uncontrolled burning. To assure proper door tightness, rope
need to be checked periodically and in case of damage - replaced. Insulation rope in bottom door need
to greased at least once a month with oil or graphite grease.

8. Ventilation

According to european safety regulations each boiler room should have supply-exhaust ventilation
ensuring correct boiler operation and user's safety. Lack of ventilation or its obstruction is the main
reason of incorrect boiler operation (i.e. boiler cannot reach set temperature). Exhaust ventilation
removes from boiler room used air and harmful gases. Boiler room with natural draught cannot have
installed mechanical ventilation.

8.1. Supply air ventilation.

1. Ventilating duct section should have at least 50% area of chimney's section and not less than 20 x 20
cm. Duct should be placed 1m above the floor.
2. Ventilating duct should have installed device for air flow control; device shouldn't limit duct section
above 1/5.Ventilating duct should be made of non-inflammable material.

8.2. Exhaust ventilation

1. Exhaust duct should be made of bricks with section of at least 25% of chimney section not less 14 x 14
cm. Inlet hole cannot have any devices that reduce its section. Outlet hole should be placed close to the
ceiling led out 1,5 m above the roof. Ventilating duct should be made of non-inflammable material.
2. Height of the boiler room min. 2,2 m.

9. Chimney connection

Chimney ducts should be installed according to binding rules and norms in countries to which boilers
are sold.
Part of chimney system connection boiler with chimney is called flue. In order to lower flow resistance of
exhaust gases this part should lead as a straight pipe with, if necessary, joints up to 45°
Because of exhaust gases temperature ORLIGNO 500's need to be connected to chimney system
protected against condensate soaking.
30 cm above the floor closing door should be installed with tight closing.
Chimney section should be round or close to square shape because of low flow resistance. Minimal flue
diameter at least 160 mm
Chimney should lead above the roof. Chimney outlet location is dependent on roof slope and its
combustibility.
Eko-Vimar Orlański Ltd. recommends to install draught regulator which stabilizes chimney draught.
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