This guide is based on the application of SunSwitch
quartz halogen infra red heaters with Philips elements. Other
infra red heaters (e.g. ceramic plaque heaters and quartz heaters)
emit heat at different wavelengths or less efficiently, and so
this guide is not applicable for these. Please contact us on 01424 883344 for further advice.
Positioning
In general, we recommend placement of quartz
halogen heaters above head height, angled downwards at about 45
degrees. This ensures the infra red rays warm the side of the
body. Ideally, heaters should be placed so that more than one
side of the body is warmed at once. We do not recommend
that quartz halogen heaters are angled straight down, because
this can overheat the top of peoples' heads and yet they will
still be cold:

Space heating
To avoid cold spots (unheated zones), heaters should be installed
so their output overlaps. Unheated zones usually occur where the
heaters installed have too low a power output for the area being
heated, there are too few heaters, or they are too far apart.
The key is to ensure the heaters selected have a throw which is
greater than half the distance between the heaters:

Type of work
The amount of heat required will depend on the building and the
type of work undertaken:
| |
Highly
insulated |
Poorly
insulated |
Light cladding |
| Sedentary work |
100W/m2 |
130W/m2 |
175W/m2 |
| Light work |
85W/m2 |
100W/m2 |
125W/m2 |
| Heavy work |
70W/m2 |
85W/m2 |
115W/m2 |
Please note that the information provided above
is purely for guidance. Results in reality will be affected by
physical factors - the structure of the building and weather conditions,
for example - and by subjective factors, such as an individual's
personal idea of comfort. Additionally, the height at which heaters
are mounted will affect the size and warmth of the zone being
heated (the further away they are, the bigger the heated zone
will be, but it will also be less warm).