Form 43471030
-4-
Sept 2011
4.0)
MINIMUM CLEARANCES TO COMBUSTIBLES
Failure to do so may result in death, serious injury or
property damage.
Combustible material must be located outside the
clearance dimensions listed.
Minimum clearances to combustibles shall be measured from the outer surfaces as shown in the following
diagram. For reduced clearances below the heater, use the Deflector Kit (Part No. 43504010), described in
Section 6.1), and maintain the minimum clearances specified in the notes below. Follow the instructions
packaged with the kit for installation.
End
End
Ceiling
Below
Front
Rear
45° Angle (Maximum)
* Ceiling
Below
Side
Side
Horizontal
MINIMUM CLEARANCES TO COMBUSTIBLES
MINIMUM CLEARANCES TO COMBUSTIBLES
MINIMUM CLEARANCES TO COMBUSTIBLES
MINIMUM CLEARANCES TO COMBUSTIBLES
Model No.
Model No.
Model No.
Model No.
Mounte
Mounte
Mounte
Mounted Horizontally
d Horizontally
d Horizontally
d Horizontally
Angle Mounted at 45º
Angle Mounted at 45º
Angle Mounted at 45º
Angle Mounted at 45º
Sides
Sides
Sides
Sides
Ceiling
Ceiling
Ceiling
Ceiling
1
1
1
1
Below
Below
Below
Below
2
2
2
2
Ends
Ends
Ends
Ends
45º Front
45º Front
45º Front
45º Front
45º Rear
45º Rear
45º Rear
45º Rear
CB 40, 50
12”
4”
57” *
8”
40”
4”
1
The clearance is 12” when installed in an UNVENTED
UNVENTED
UNVENTED
UNVENTED configuration in industrial and commercial installations.
2
IN CANADA
IN CANADA
IN CANADA
IN CANADA, clearances below the heater are:
CB40/50:
48” (36” with deflector)
* The clearance is 42” with deflector / 30” side clearance with deflector.
▲WARNING:
▲WARNING:
▲WARNING:
▲WARNING: Certain materials or objects, when stored under the heater, will be subjected to radiant h
Certain materials or objects, when stored under the heater, will be subjected to radiant h
Certain materials or objects, when stored under the heater, will be subjected to radiant h
Certain materials or objects, when stored under the heater, will be subjected to radiant heat and
eat and
eat and
eat and
could be seriously damaged.
could be seriously damaged.
could be seriously damaged.
could be seriously damaged. Observe the Minimum Clearances to Combustibles listed in the manual and on the
Observe the Minimum Clearances to Combustibles listed in the manual and on the
Observe the Minimum Clearances to Combustibles listed in the manual and on the
Observe the Minimum Clearances to Combustibles listed in the manual and on the
heater at all times.
heater at all times.
heater at all times.
heater at all times.
NOTE:
NOTE:
NOTE:
NOTE:
1.
1.
1.
1. The clearances specified above must be maintained to combustibles and other materials that may be
The clearances specified above must be maintained to combustibles and other materials that may be
The clearances specified above must be maintained to combustibles and other materials that may be
The clearances specified above must be maintained to combustibles and other materials that may be
damaged by t
damaged by t
damaged by t
damaged by temperatures 90ºF above ambient temperature.
emperatures 90ºF above ambient temperature.
emperatures 90ºF above ambient temperature.
emperatures 90ºF above ambient temperature. Clearances to combustibles are posted on the
Clearances to combustibles are posted on the
Clearances to combustibles are posted on the
Clearances to combustibles are posted on the
control box.
control box.
control box.
control box. In areas used for storage of combustible materials where they may be stacked below the heater,
In areas used for storage of combustible materials where they may be stacked below the heater,
In areas used for storage of combustible materials where they may be stacked below the heater,
In areas used for storage of combustible materials where they may be stacked below the heater,
NFPA54 requires that the installer must post signs that wil
NFPA54 requires that the installer must post signs that wil
NFPA54 requires that the installer must post signs that wil
NFPA54 requires that the installer must post signs that will “specify the maximum permissible stacking height
l “specify the maximum permissible stacking height
l “specify the maximum permissible stacking height
l “specify the maximum permissible stacking height
to maintain the required clearances from the heater to combustibles.”
to maintain the required clearances from the heater to combustibles.”
to maintain the required clearances from the heater to combustibles.”
to maintain the required clearances from the heater to combustibles.” Space
Space
Space
Space----Ray recommends posting these
Ray recommends posting these
Ray recommends posting these
Ray recommends posting these
signs adjacent to the heater thermostat or other suitable location that will provide enhanced visibi
signs adjacent to the heater thermostat or other suitable location that will provide enhanced visibi
signs adjacent to the heater thermostat or other suitable location that will provide enhanced visibi
signs adjacent to the heater thermostat or other suitable location that will provide enhanced visibility.
lity.
lity.
lity.
2. The stated clearance to combustibles represents a surface temperature of 90
2. The stated clearance to combustibles represents a surface temperature of 90
2. The stated clearance to combustibles represents a surface temperature of 90
2. The stated clearance to combustibles represents a surface temperature of 90 ºF
ºF
ºF
ºF (32
(32
(32
(32 ºC) above room
ºC) above room
ºC) above room
ºC) above room
temperature. Building materials with a low heat tolerance (such as plastics, vinyle siding, canvas, tri
temperature. Building materials with a low heat tolerance (such as plastics, vinyle siding, canvas, tri
temperature. Building materials with a low heat tolerance (such as plastics, vinyle siding, canvas, tri
temperature. Building materials with a low heat tolerance (such as plastics, vinyle siding, canvas, tri----ply, etc.)
ply, etc.)
ply, etc.)
ply, etc.)
may be subject to degradation at l
may be subject to degradation at l
may be subject to degradation at l
may be subject to degradation at lower temperatures. It is the installer’s responsibility to assure that adjacent
ower temperatures. It is the installer’s responsibility to assure that adjacent
ower temperatures. It is the installer’s responsibility to assure that adjacent
ower temperatures. It is the installer’s responsibility to assure that adjacent
materials are protected from degradation.
materials are protected from degradation.
materials are protected from degradation.
materials are protected from degradation.
