11NIBE PB 10
Installation
Trimming tips
P1. SUPPLY TIME – START FUEL
There must be sufficient pellets in the cup that one can just
see the top edge of the uppermost holes on the ignition
direction plate, default setting for 75 seconds (each flash
corresponds to 15 seconds).
P2. FIRING SUPPLY
Default setting for 3 seconds, corresponds to 12 kW at 8
mm pellets and a screw angle of 45º.
P3. FAN OVERRUN
The time the fan runs after the operating thermostat has
stopped and the photocell has lost light.
Default set for 150 seconds (each flash corresponds to 30
seconds).
P4. OVERRUN PHASE (Burn out time)
Time with 25% supply since the photocell has seen light
(25% supply of set value on P2).
Default set for 270 seconds (each flash corresponds to 45
seconds).
P5. Photocell sensitivity (Factory set, should normally
not be adjusted).
Check points after installation
The flue gas temperature must be checked (normally be-
tween 170–240 °C). In the event of a fault, adjust the flue
gas temperature according to the manual.
Flue gas analysis (with flue gas analysis gauge, e.g. Testo
325M)
Q Flue gas temp. 170–240 °C
If the flue gas temp. is too high, the amount of surplus
air is too great. In the event of low temperatures, check
the boiler's turbulators if the boiler is equipped with
them. These can be removed or cut off if necessary.
Q CO2-content 10–12%
Q CO ppm 500 and less
Q Air surplus (h-value) 1.7–2.4
Preferably less than 2 for the fuel economy and effi-
ciency to be satisfactory.
Q O2-content 8–11%
Q Efficiency 80% and more
Combustion efficiency
Q Vacuum in boiler
15–20 Pa (1.5–2 mm Vp)
Readings taken from inside the boiler's flue connection
5–6 Pa (0.5–0.6 mm Vp)
Readings taken in fireplace area
Remarks: These values can be used as good starting
values for a new boiler.
On an older unsealed boiler the supply air can be above 3.
The vacuum in the fireplace must be at least 5–6 Pa.
Tip:
A flame from a match or similar can be used to check the
seal of the doors on the boiler.
If any of the doors has a leak, the flame is drawn towards
the boiler. If the fan damper is choked at installation on an
unsealed boiler in order to obtain ideal values according
to the table, cooling the photocell may not be sufficient
whereupon the it may melt.
It may be necessary to make compromises for an older
unsealed boiler.
Commissioning and adjusting
LD1 P3
P5
P4
P2P1LD2LD3
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