Practical Examples Of Connection: Combustion Air And Convection - Kalfire W Series Installation And User Manual

Fireplace surround
Materials with the following characteristics can be used to create
the surround around the Kalfire W:
- Resistant to high temperatures, minimum 700 °C.
- Free from materials which can cause fumes and odour
nuisance.
- Dimensionally stable, even after lengthy exposure to high
temperatures.
1. The surround must have no direct connection to the
appliance; it must be self-supporting.
2. Seal the joints between the appliance and the surround,
using heat resistant glass fibre or ceramic cord.
3. Use the Kalfire mantel iron for easy and stable mounting
of the span above the door of the fireplace. Never attach
this mantel iron to the actual appliance, but to the side of
the surround or use tie rods to attach it to the ceiling or
wall.
4. Ensure that the thickness of the surround above the
door of the fireplace does not exceed 11 cm, otherwise
the fireplace will be too deeply recessed and it will be
difficult to operate/clean the door.
5. Finish the surround using materials that do not contain
any plastic substances. High temperatures may cause
plastic to discolour.
6. Before completely closing off the surround, ensure
that the inside of the surround is clean and free of dust.
Preferably use a vacuum cleaner to clean the inside of
the surround. If you fail to do his, particles of dust may
cause problems in the air flow of the convection system.
7. The fireplace is surrounded by a metal strip which
facilitates the join between the surround and the
fireplace. These metal strips can be hidden from view on
the front; all the lines of the surround then merge into
the finishing strips. The side strips can be demounted
inwards, so the guide can be accessed in the event of
maintenance.
3.8.1 Practical examples of connection:
combustion air and convection
Situation 1 - Recommended situation
The combustion air is connected directly to the appliance from
outside. The outside air is not in contact with the room the
fireplace is installed in or with the chimneybreast. The convection
system is also connected directly to the fireplace. There are no
open connections between the interior of the chimneybreast and
the room in which the fireplace is installed.
Situation 2:
The combustion air is connected directly to the appliance from
outside. The outside air is not in contact with the room the
fireplace is installed in or with the chimneybreast. The convection
system is only in contact to the room in which the fireplace is
installed.
Situation 3:
The combustion air cannot be connected directly to the
appliance; this air must be taken from the room the fireplace is
installed in. This mainly occurs in an existing situation, in which
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the combustion air can only be taken from the room the appliance
is in. The convection system must then be physically separated
from the combustion air; connect the lower and upper convection
gratings directly to the appliance. The combustion air reaches
the fireplace through extra openings in the chimneybreast. See
Technical Specifications (table 4) for the through put of these
openings.
Situation 1
Situation 2
Situation 3
The convection connections at the top of the appliance
must be connected at all times.