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FIGURE 10: Unvented Operation
36"
(91cm)
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.)
3.
This heater requires ventilation in the building to dilute the
products of combustion and provide fresh air for efficient
combustion.
FIGURE 10A: Single Wall
Single wall vent run
Single wall terminal end
18" (45cm) Min.
2"(5cm) Clearance thimble
required when flu pipe
extends through
combustible materials
A
36"
(91cm)
3'-0" (91cm) Min.
6' (182cm) Min.
2"(5cm) Clearance thimble
Enerco | Heatstar ER2STG Tube Series Heater
FIGURE 10b: Double Wall
Double wall vent run
Double wall terminal end
8"(20cm) to 10"(25cm) Max.
FIGURE 11: Vertical Venting
Vent Adapter
15
Operating Instructions and Owner's Manual
18" (45cm) Min. 3'-0" (91cm) Min.
6' (182cm) Min.
18"(45cm)
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