PB Heat DE User Manual download pdf (Page 16)

D. DIRECT EXHAUST; VERTICAL VENTING

1. This vent system will operate with a positive pressure

in the vent pipe. Follow vent pipe manufacturer’s

instructions for proper assembly of vent pipe and

fittings.

2. Refer to Table 4.2 for minimum and maximum vent

length allowed.

3. Maintain a minimum 2” (51 mm) clearance between

vent pipe and combustible construction.

4. Follow instructions under section C. DIRECT

EXHAUST; HORIZONTAL VENTING items 6b

through 6h.

5. Horizontal portions of the vent pipe shall slope up

not less than 1/4” per foot (21 mm per meter) from

the boiler to the vertical vent.

6. Provide a horizontal drain tee in the horizontal vent

run. Use silicone drain hose with a 3” (76 mm)

diameter loop trap with a water seal. Pipe to drain

per local codes.

7. Refer to vent pipe manufacturer’s instructions under

vertical venting section for recommendation for

penetration through floors and roofs.

8. Vent must terminate 12” (305 mm) above expected

snow lines.

9. See Figure 4.5 for details.

VENTING

Figure 4.4: Direct Exhaust; Sidewall Venting

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 42 43

No comments

PB Heat DE User Manual Page 16