Installation Manual

HE+ Series Infrared Gas Heater Installation and Operation Manual

Clearance to Combustibles

Location of flammable or explosive objects, liquids or vapors close to the heater may cause fire

or explosion and result in property damage, injury or death. Do not use, store or locate flamma-

ble or explosive objects, liquids or vapors in proximity of the heater.

The clearance to combustible material represents the minimum dis-

tance that must be maintained between the outer heater surface and

a nearby surface. The stated clearance to combustibles represents a

surface temperature of 90F° (50C°) above room temperature. It is the

installer’s responsibility to ensure that building materials with a low

heat tolerance which may degrade at lower temperatures are pro-

tected to prevent degradation. Examples of low heat tolerance mate-

rials include vinyl siding, fabrics, some plastics, filmy materials, etc.

In locations used for the storage of combustible materials, signs must be posted to specify the

maximum permissible stacking height to maintain the required clearances from the heater to

the combustibles. Such signs must either be posted adjacent to the heater thermostats or in

the absence of such thermostats in a conspicuous location. In addition to stored or stationary

material, consideration must also be given to moveable objects such as cranes, vehicles, and

overhead doors, and structural objects such as sprinkler heads, electrical and gas lines, and

electrical fixtures.

It is beyond the scope of these instructions to consider all conditions that may be encountered

in the field. Consult local authorities such as the Fire Marshall, insurance carrier, or safety au-

thorities if you are uncertain as to the safety or applicability of the proposed installation.

Refer to Figure 1 and Table 1 for the certified clearances to combustibles for the appro-

priate model input/size.

WARNING

Tube “GLOW”

It is a normal condition that the combustion tube (1st tube) can appear to “glow red”. For inputs

up to 205,000 Btuh, the top surface of the tube can appear red where heat is trapped between

the reflector and the tube. The stainless steel tube used for inputs 225,000 and greater can ap-

pear to entirely glow red. The tube material is designed into the heater because it can with-

stand the high temperature of combustion, and the “red glow” is a normal condition of the met-

allurgy of the tube material.