Enerco ERXL-125S - Manual (Page 17)

17
Operating Instructions and Owner’s Manual Enerco | enerRadiant® XL Series Heater
streams of combustion gases.
Outside Air Supply
a) See procedure and diagram on page ??.
FIGURE 12: Unvented Operation
36”
36”
A
1) Ventilation equal to 4 CFM per 1,000 BTU/hr. firing
rate must be provided in unvented heater installations.
2) For dimensions A “unvented” refer to (Figure 1 —
Minimum Clearances to Combustibles.)
FIGURE 13a: Single Wall
Single wall vent run
Single wall terminal end
FIGURE 13b: Double Wall
Double wall vent run and
Double wall terminal end
FIGURE 14: Vertical Venting