Enerco ERXL-150L, ERXL-175L, ERXL-60 Critical Considerations, Installation Procedure, Hazardous

•When installed over hoists, minimum clearances to combustibles must be main- tained from the uppermost point on the hoist.

Electrical: The heater must be electrically grounded in accordance with the National Electrical Code, ANSI / NFPA-70 – latest revision. Wiring must conform to the most current National Electrical Code, local ordinances, and any special diagrams furnished.

Venting: The venting must be installed in accordance with NFPA-54 / ANSI Z223.1 – latest revision, National Fuel Gas Code. Partial information with regard to this code is provided in (Section 5) of this installation manual with regard to size and configurations for venting arrangements.

•Any portion of flue pipe passing through a combustible wall must be dual insulated or have an approved thimble. Refer to

ANSI-Z223.1 – latest revision.

Hazardous

Locations: Where there is the possibility of exposure to combustible airborne material or vapor, consult the local Fire Marshal, the fire insurance carrier or other authorities for approval of the proposed installation.

Critical Considerations

Ener-Radiant ERXL is a suspended heater. Therefore, its stability, flexibility, and safety are very important. Before starting installation, be sure the system can meet the following requirements.

•Maintain specified clearances to combus- tibles, and safe distance from the heat- sensitive material, equipment and work stations.

•Provide a suspension with vertical length of chain or swinging rod which has at least 2 inches of horizontal travel for each burner in a straight run. Be sure the suspension system is sufficiently flexible to accommodate thermal expansion which occurs as the system heats up (see Figure 5 on page 15).

•Provide access to burners for servicing, preferable on both sides, above and be- hind the burner for removal.

•Provide a minimum of 18 inches of clear- ance between burners and building walls. (Always observe minimum clearances to combustibles.)

•Be sure the heater has a downward pitch of one-half inch per 20 feet away from the burner.

•Provide signs in storage areas to specify maximum stacking height to maintain required clearances to combustibles.

•Plan location supports (see Figure ?). Locate a support near all elbows.

Installation Procedure

Take maximum advantage of the building upper structure, beams, joists, purlins, etc., from which to suspend the heater. There is no unique sequence for installation of the tubing. On-site observation will usually reveal a logical sequence. Begin the installation at the most critical dimension. This could save time. Watch for swinging doors, overhead cranes, car lifts, etc. Reflectors and tubing can be installed as you move along. Carefully adjust system pitch at each position to level the heater. Pitch down one-half inch in 20 feet (away from burner).

Don’t Pressure test the gas line using high pressure (greater than ½ PSIG) without closing the high-pressure shutoff cocks. Failure to do so will result in damage to the burners.

DO Familiarize yourself with local and national codes.

Develop a planned procedure which will conserve material and labor on the job.

Check to see that all material and equipment is on the job before starting installation.

Allow for thermal expansion of the hot tube.

Install the gas connector only as shown in instructions (see Figure 17).

Have slip joints where required between reflectors to keep them from buckling or coming apart.

Provide 1 sq. inch of free air opening to each 1,000 BTU/hr. of heater input (but not less than 100 sq. inches) in enclosed spaces. One opening should be within 12 inches of the top and one within 12 inches of the bottom of the enclosure.

Enerco enerRadiant® XL Series Heater 4 Operating Instructions and Owner’s Manual