LAARS Mighty Therm PH (Sizes 500-1825) - Installation, Operation and Maintenance Instructions - Manual (Page 7)

Mighty Therm Hydronic Boiler Page 7
(b.) In Canada, consult local building and safety
codes or, in the absence of such requirements,
follow CGA requirements and/or CAN 1 - B149
standard. (Table 3 does not apply).
3. Exhaust Fans or Vents: Any equipment which
exhausts air from the boiler room can deplete the
combustion air supply or reverse the natural
draft action of the venting system.
The boiler must be completely isolated and this
could cause flue products to accumulate in the
room. Additional air must be supplied to
compensate for such exhaust. The information in
Table 3 is not applicable in installations where
exhaust fans or blowers of any type are used.
Such installations must be designed by qualified
engineers.
Figure 4. Base for Combustible Floors.
Figure 5. Typical Boiler Installation on Concrete Slab.
Figure 6. Typical Boiler Installation on Raised Platform
(Wood).
Figure 7. Typical Boiler Installation on Roof Using a
4 x 4 Stringer.
Figure 8. Installation on Concrete Blocks or Tile.