Section 6: Critical Considerations; Required Clearances To Combustibles; Figure 13: Standard Reflector - Roberts Gorden Vantage CTHN-40 Kit Instructions

VANTAGE ® NP F C I
UEL ONVERSION NSTRUCTIONS

SECTION 6: CRITICAL CONSIDERATIONS

6.1 Required Clearances to Combustibles

Clearances are the required distances that
combustible objects must be away from the heater to
prevent fire hazards. Combustible materials that may
catch fire include common items such as wood,
paper, rubber, fabric, etc. Maintain clearances to
combustibles at all times for safety.
Clearances for all heater models are located on the
burner of the heater and on Page 14, Figure 13
through Page 17 , Figure 22 in this manual. Check the
clearances on each burner for the model heater
being installed to make sure the product is suitable
for your application and the clearances are
maintained. Read and follow the safety guidelines
below:
• Keep gasoline or other combustible materials
including flammable objects, liquids, dust or
vapors away from this heater or any other
appliance.
• The stated clearances to combustibles represents
a surface temperature of 90° F (50° C) above
room temperature. Building materials with a low
heat tolerance (such as plastics, vinyl siding,
canvas, tri-ply, etc) may be subject to degradation
at lower temperatures. It is the installer's
responsibility to assure that adjacent materials
are protected from degradation.
• Maintain clearances from heat sensitive material,
equipment and workstations.
• Maintain clearances from vehicles parked below
the heater.
• Maintain clearances from swinging and overhead
doors, overhead cranes, vehicle lifts, partitions,
storage racks, hoists, building construction, etc.
• In locations used for the storage of combustible
materials, signs must be posted to specify the
NOTE: 1. All dimensions are from the surfaces of all tubes, couplings and elbows.
2. Clearances B, C and D can be reduced by 50% after 25' (7.5 m) of tubing downstream
from where the burner and burner tube connect.

FIGURE 13: STANDARD REFLECTOR

14
Model A
CTHN-40 5 20
CTHN-60 5 27
CTHN-80 5 30
CTHN-100 5 32
CTHN-125 5 35
CTHN-150 5 39
CTHN-175 8 44
CTHN-200 8 47
WARNING
Fire Hazard
Keep all flammable objects, liquids and
vapors the minimum required clearances to
combustibles away from heater.
Some objects will catch fire or explode when
placed close to heater.
Failure to follow these instructions can result
in death, injury or property damage.
maximum permissible stacking height to maintain
required clearances from the heater to the
combustibles. Signs must be posted adjacent to
the heater thermostat. In the absence of a
thermostat, signs must be posted in a
conspicuous location.
• Consult local Fire Marshal, Fire Insurance Carrier
or other authorities for approval of proposed
installation when there is a possibility of exposure
to combustible airborne materials or vapors.
• Hang heater in accordance to the minimum
suspension requirements.
• If the radiant tubes must pass through the building
structure, be sure that adequate sleeving and fire
stop is installed to prevent scorching and/or fire
hazard.
(inches)
B C D
41 20
51 27
58 30
60 32
65 35
71 39
74 44
76 47
(centimeters)
A B C
13 51 104
13 69 130
13 76 147
13 81 152
13 89 165
13 99 180
20 112 188
20 119 193
D
51
69
76
81
89
99
112
119