Reversing Gas Manifold Connections (Ext 450 2S - 1100 2S); Reversing Cold/Hot Water Flow & Return Connections (Ext 450 2S - 1100 2S) - Watts AERCO Modulex EXT Series Technical Application Manual

Modulex EXT Series Piping
CONNECTING SUPPLY & RETURN PIPING

5.4.3. Reversing Gas Manifold Connections (EXT 450 2S - 1100 2S)

To move the gas connection from the RIGHT-HAND (standard) side to the LEFT-HAND side, swap the
end plate and the gas supply connector screwed onto the gas manifold ends as shown. Ensure that the
gaskets for ALL connections are reversed along with the connectors themselves.
Gas Manifold
Gasket
Supply Gas to
Gas Manifold
Connector
Figure 9: Reversing Gas Connections from RIGHT-HAND to LEFT-HAND
5.4.4. Reversing Cold/Hot Water Flow & Return Connections (EXT 450 2S - 1100 2S)
Change of Water Flow and Return connections from RIGHT hand to LEFT hand requires reversing
Supply, Flow, and Return connectors, moving the Flow and Return Temperture Sensors to the other end,
and exchanging positions of the Boiler Sensor KF and Automatic Air Vent.
WARNING!
Ensure that the gaskets for ALL connections are reversed along with the connectors themselves.
Page 24 of 37
10.07.2010
Application Guide
Gas Manifold
Gasket
NOTE: Torque all bolts to 8.85 ft-lbs (12 N/m)
450 2S – 1100 2S
for EXT
AERCO International, Inc. • 100 Oritani Dr.
Phone: 800-526-0288
Gas Manifold
End Plate
Blauvelt, NY 10913 TAG-0099