Flue Manifold Connection - Watts AERCO MLX EXT 321 Installation, Operation & Maintenance Manual

Modulex Light Commericial Series
CHAPTER 4: Installation Instructions

4.20 FLUE MANIFOLD CONNECTION

To assemble the flue manifold to the boiler flue exhaust opening, retrieve the six (6) nuts and
washers from the plastic bag, shipped with the boiler, and affix to the boiler opening per Figure
4-22. The Manifold may be installed on the left, front, or rear. If switching to left or rear positions,
the unused outlet should be covered with the plate and gasket removed from outlet being used.
RECTANGULAR
GASKET
Figure 4-22: Connection of Flue Manifold to Boiler Exhaust Opening
For venting systems in the USA, it is necessary to assemble the Euro-to-USA adaptor to the flue
manifold as shown in Figure 4-23.
Figure 4-23: Assembly of USA-to-European Flue Adaptor to Flue Manifold
OMM-0087_J • GF-143 • 11/17/2020
FLUE MANIFOLD
FLUE MANIFOLD
EUROPEAN-TO-USA
FLUE ADAPTER
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
NUTS (6)
GASKET
NOTE:
THE GASKET
MAY SEEM LARGE. IT
IS INTENTIONALLY
DESIGNED TO
PROVIDE A TIGHT FIT.
GASKET
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