Version 2: March 2020
6
manual: 0009 0231EN
Safety distance to combustible materials
The heaters provide heat by radiation and by combustion gases. It is important to take into account the distances
as mentioned in the table from the heaters to combustible materials. This is to avoid risk of fire. Do not use the
heater in situations where the distances to combustibles are smaller or take additional protective actions. Pay
special attention to materials that can move by wind easily in front of the burner, like curtains. Keep these
materials always on a distance of 1 meter or more.
Find in the table below the safety distances from the edge of the reflector to the walls/objects concerned. Realize
that these distances are safety distances in relation to fire safety. This means that temperatures still can rise to
50 degrees Celsius above ambient temperature (= the limit given in the standards). Be alert on possible other
problems, like discolouring. In case of doubt, keep more distance.
Distance to combustible materials (installation angle 45 degrees). See fig. 6
Model
AL-4
AL-6
AL-7
Upper edge reflector to:
[A] - combustible ceiling
[A] - combustible sunshade cloths
50 cm
60 cm
55 cm
Lower edge reflector to:
[B] - combustible back-wall
13 cm
15 cm
16 cm
[C] - the ground
>210 cm
Front plane of the reflector to:
[D] - objects within radiation reach
100 cm
120 cm
120 cm
Side edge reflector to:
[E] - combustible side-walls
30 cm
50 cm
40 cm
The minimal distance to non-combustible materials depend on the location but must be at least 30 cm to the
ceiling and side walls. Be aware that some non-combustible materials will discolour when they become to hot.
Combustible materials can be covered with non-combustible materials to minimize the mounting distances.
Inform with a professional about which non-combustible materials can be used and the minimum thickness
needed. Always do a practical test with an operating heater to check the final temperatures of the walls and
objects.
Ventilation around the heater
Check if there is sufficient space for the combustion gases to vent away, but also if there is enough fresh air
available at the inlet of the venturi (10 or 33) to the burner. If this is not the case, this will have an influence on
the proper combustion and good functioning of the heater. Sooting, long flames and CO emission can occur
which is not allowed. Also condensation of water can happen. Installation in between ceiling beams can be a
situation where fresh air access will be limited (see also fig. 1d).
Note: electric components shall not reach temperatures above 60 degrees Celsius. Make sure that the electric
components (Ei and/or S) after mounting of the heater are sufficient cooled by fresh air and that the combustion
gases never can touch these components. Check this during the first operation of the heater.
Heating plan
The location of infrared heaters on a terrace needs the advice of an experienced specialist. Especially when
more heaters are used with limited installation space in relation to windows, doors and ceiling height. Also the
location in relation the wind direction, open field, beach or urban environment, open air or under a veranda are
important for a good advice. Ask the dealer for more information and a heating plan. Check always the safety
distances to combustible materials as given above.
Mounting
Mount the heater firmly with metal brackets on the wall or other construction. Make sure that the heaters are
mounted with the ceramic burner plaques pointing downwards under an angle of 45 degrees with the horizontal.
(see Fig. 6). The long side of the reflector shall be water level in the horizontal surface. For mounting purposes
the model AL-7 has 4x M5 thread holes at the back side on a distance of approx. 802mm. The models AL-4
and AL-6 have 2 mounting ears on the back side with 3 holes (1x7mm and 2x 5,5mm). The distance between
the centre of the ears is approx. 102 mm.
Check always first the location and dimensions of the holes on the heaters before drilling holes, etc. Note: never
use a rope or plastic material to mount the heater. Never use the gas line to mount the heater on.
