Minimum Clearances To Combustibles - Space-Ray FUSION Series Installation & Operation Instructions

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MINIMUM CLEARANCES TO COMBUSTIBLES

Install the warnings card (ordered separately) and complete the blank spaces using the clearances from
combustibles table below. See Section 25 for a printed copy of the warnings card.
Minimum clearances to combustibles shall be measured from the outer surfaces as shown in the following
diagram:
Model No. Sides
FUS 60 36" (91cm)
36" (91cm)
FUS 70
FUS 80 36" (91cm)
FUS 90 36" (91cm)
* Exhaust hood must be installed.
▲WARNING: Certain materials or objects, when stored under the heater, will be subjected to radiant heat and
could be seriously damaged. Observe the Minimum Clearances to Combustibles listed in the manual and on the
heater at all times.
NOTE:
1. The clearances specified above must be maintained to combustibles and other materials that may be
damaged by temperatures 90ºF above ambient temperature. Clearances to combustibles are posted on the
burner box. 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 will "specify the maximum permissible stacking height to
maintain the required clearances from the heater to combustibles." Space-Ray recommends posting these signs
adjacent to the heater thermostat or other suitable location that will provide enhanced visibility.
2. The stated clearance to combustibles represents a surface temperature of 90 ºF (50 ºC) above room
temperature. Building materials with a low heat tolerance (such as plastics, vinyl siding, canvas, tri-ply, pvc pipe
or conduit, etc.) may be subject to degradation at lower temperatures. It is the installer's responsibility to assure
that adjacent materials are protected from degradation.
MINIMUM CLEARANCES TO COMBUSTIBLES
Mounted Horizontally
Ceiling* Below
12" (30cm) 69" (175cm)
69" (175cm)
12" (30cm)
12" (30cm) 69" (175cm)
12" (30cm) 69" (175cm)
-4-
Angle Mounted at 45º
Ends 45º Front
32" (81cm) 52" (132cm)
32" (81cm) 52" (132cm)
32" (81cm) 52" (132cm)
32" (81cm) 52" (132cm)
45º Rear
12" (30cm)
12" (30cm)
12" (30cm)
12" (30cm)
Form 43343100
April 2022 A