Install Instructions (Venting)

Part number 550-100-103/1110
A–5
GAS-FIRED WATER BOILER — Manual addendum — Venting
Venting & air — general (cont.)
Figure 3 DIRECT EXHAUST APPLICATIONS — Vent termination options (combustion air from room)
DIRECT EXHAUST
Sidewall termination
DIRECT EXHAUST
Vertical termination
Sidewall vent
termination
(See addendum
page A-19)
Vertical vent
termination
(See addendum
page A-19)
Direct
exhaust
installation
sequence
Install the boiler.Step 1
Determine the proper location for roof or wall penetration for each termination. Step 2
Prepare roof penetrations before installing vent piping.s
Finish by attaching external pipe and fittings as shown in the termination instructions.s
Vertical terminations only — Install terminations as described in this addendum.s
Support vertical runs on the outside of the building with brackets as shown in the termination instructions. s
Install vent piping from boiler to termination.Step 3
Install a hanger support within 6 inches of any upturn in the piping.s
Slope horizontal piping downward toward the boiler at least 1/4 inch per foot.s
Connect the vent piping at the boiler per manual instructions.Step 4