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The clearance to combustible materials represents the minimum distance that
must be maintained between the heater and a nearby surface.
The stated clearance to combustibles represents a surface temperature of 90
degree Fahrenheit (32 degrees Celsius) above room temperature. Building material with
a low heat tolerance may be subject to degradation of lower temperatures. It is the
installer's responsibility to assure that adjacent materials are not subject to degradation.
A warning statement that an overhead heater is present should be installed so
that the minimum clearances marked on the heater will be maintained from vehicles
parked below the heater.
Minimum clearances (inches) from combustibles measured from radiant surface.
Clearances are reduced by 1/3, 15 ft (4.6 meters) from the burner.
For installation at elevations above 2000 ft (610m), the appliance shall be de-rated 4
percent for each 1000 ft (305m) of elevation above sea level.
Model
Length
(mm)
PPRTH-50-15
(5182)
PPRTH-75-20
(6706)
PPRTH-85-25
(8230)
SIDE
BELOW
CLEARANCES TO COMBUSTIBLES
Input (BTU)
ft.
17
50,000
22
75,000
27
85,000
ABOVE
SIDE
Hangers
Weight
4
88 lbs
39.8 kgs
4
115 lbs
47.5 kgs
124 lbs
6
56.2 kgs
ANGLE MOUNTING
BACK
BELOW
Clearance to Combustibles in inches
Below
Sides
Top
(mm)
(mm)
(mm)
48
25
4
(1220)
(635)
(102)
48
25
4
(1220)
(102)
(635)
48
4
25
(1220)
(102)
(635)
ABOVE
Side
45 DEG. MAX
Back (45
degrees)
16
(406)
16
(406)
16
(406)
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