INSTALLATION, OPERATION AND MAINTENANCE MANUAL
BiSolid Comfort OM-BSCV00/08/2012/EN
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Figure 3.Chimney (flue) flap for draught regulation.
Another element for regulation of the boiler draught is the thermo-regulating valve (Figure 4).
The regulator is situated on the cast-iron body exit. It regulates the primary air quantity, used
for firing, under the boiler fire-grate by opening or closing a flap, situated on the ash-tray door.
Figure 4. Thermo-regulating valve (TRV).
1. Regulator head
2. Holder
3. Handle
4. Regulator body
5. Hex key
6. Hollow shaft
