Clearance To Combustibles; Clearance To Combustible Materials - Berner GR Series Operating And Service Instructions

Clearance to Combustibles

Clearance to Combustible Materials.

It is very important to observe the minimum clearance to combustibles at all times to avoid any
possibility of property damage or personal injury.
WARNING
Clearances as marked on the heater body must be maintained from vehicles parked beneath. Signs should
be posted identifying any possible violation of the clearance distances from the heater in all vehicle areas.
Maximum allowable stacking height in storage areas should be identified with signs or appropriate
markings adjacent to the thermostat or in a conspicuous location.
Table 1 lists the minimum clearance to combustible materials for various installation configurations.
Additional clearance may be required for glass, painted surfaces and other materials which may be
damaged by radiant or convective heat.
Combustible materials are considered to be wood, compressed paper, plant fibres, plastics, Plexiglas or
other materials capable of being ignited and burned. Such materials shall be considered combustible
even though flame-proofed, fire-retardant treated or plastered.
The stated clearance to combustibles represents a surface temperature of 90°F (50°C) above room
temperature. Building materials with low heat tolerance (such as plastics, vinyl siding, canvas, tri-ply,
etc...) maybe subject to degradation at lower temperatures. It is the installer's responsibility to assure
that adjacent materials are protected from degradation.
It is important to observe minimum clearance to combustibles at all times to avoid any possibility of
property damage or personal injury. Clearances must be maintained from vehicles parked beneath heaters.
Signs should be posted identifying any possible violation of the clearance distances from the heater in
vehicle areas. Also maximum allowable stacking height in storage areas should be identified with signs or
appropriate markings. Figure 2 shows minimum clearance to combustible materials.
Series GR Page 7 February 10, 2014