Modulex Light Commercial Series
CHAPTER 4: Installation Instructions
OMM-0158_A
• 6/28/2022 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page
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4.22 Vent Starter Pieces
The table below lists the vent starter pieces. PVC starter pieces are included with every unit. For
stainless steel and polypropylene vent starter pieces, see the table below for availability and
sourcing information.
Starter Pieces
Boiler Model
Diameter
Material
Kit Part Number
EXT 450 2S
4”
Diameter
Stainless Steel
Contact vent supplier directly
Polypropylene
P/N 39006-1 (for Duravent PolyPro. For other
brands, contact manufacturer directly.
PVC
P/N 49051 (included)
EXT 600-1100 2S
6”
Diameter
Stainless Steel
Contact vent manufacturer directly
Polypropylene
P/N 39006-2 (for Duravent PolyPro. For other
brands, contact manufacturer directly.
PVC
P/N 49050 (included)
Figure 4-23: Flue Exhaust Diameter Reduction Adaptor Kit and Parts
European-to-
American
Standard Flue
Adapter
PVC Vent Starter Kit
Port with Plug for Cleaning & Inspection
Gasket
(included)
This piece supplied with boiler