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Modulex EXT Vent and Combustion Air Application Guide
Page 8 of
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AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
TAG-0054-0F
09/25/2017
Phone: 800-526-0288
GF-136-V
1.4.4.
Air Intake Connector (Supplied)
Air is drawn into the EXT through the air inlet on the left side of the unit (Figure 4). A connector is
included installed and ready to use for connecting the appropriate air intake piping for EXT 321–
1123/450–1100. For EXT 1530–3060/1500–3000, the combustion air intake adapter is shipped loose.
This adapter
is designed for spiral ducting only. For PVC ducting, order either P/N 58115-1 or 58115-
2 as per Table 1.
Figure 4: Air Intake Connection
NOTE:
See Chapter 3 for instructions for assembling the flue piping, including the exhaust manifold, Euro-to-
USA Adaptor, and Diameter Reduction Kits.
When using sealed combustion, observe the following requirements:
•
Sealed combustion is only available on the left of the unit only.
•
If using side-by-side minimum installation clearances, the center facing air inlet is not
available. See “Multi-Unit Installation Clearances (SD-A-968)” for further details.
Please note the following:
•
EXT Models 321 – 1123 are set up for PVC inlet piping.
•
EXT Models 1500 – 3060 come with an air intake adaptor for spiral ducting.
FOR EXT MODELS 321 – 1123
FOR EXT MODELS 1500 – 3060