Hsotram HK2, Manual

Page: 9 / 36

MANUAL
HK2 – HK4 25-08-2014
Page
9
1.3.4 Primary and secondary air settings
In connection with the first start-up of the boiler, it is recommendable to make an emission test.
This procedure is in some countries regulated by law. To assure the correct procedure – ask the local
chimneysweeper for guidance.
1.3.5 Fine tuning of the secondary air
1.3.6
Minimum flue gas temperature setting, only for installer or advertised user.
The sensor is placed in sensor pocket in the fan housing (on the top of the body, at the back
left) and measures the flue gas temperature (factory setting to 90°C).
It is when this temperature goes down that the suction fan cuts itself off definitively when
there is no longer any wood in the boiler and the temperature of the flue gas decreases. This
to avoid unnecessary cooling down from airflow through the boiler.
1.3.7 Boiler temperature setting, only for installer or advertised user.
The normal temperature of the boiler is at least 85°C (factory setting 87°C). With the
« recyclable Kit D 60°C », an optional supply, the temperature of the boiler will stabilize at
about 62°C/65°C, as long as the boiler is in phase with storage tanks load. When the storage
tanks are loaded at least at 60°C at the lowest point, the boiler temperature will increase like
the storage tanks until the adjusted temperature.
Good setting. The flame
« just » leaves the
furnace, yellow and light
blue-tinged.
Too much secondary air.
The flame is too short and
blue-tinged: reduce the
secondary air.
Not enough secondary air.
The flame is too long and
orange / reddish: increase
the secondary air
Basic air settings
Primary air (high)
indication 3
Secondary air (low)
indication 4
Leafy trees/deciduous 30% 70%
Softwoods/evergreen 50% 40%