9
010.4150.0720 08.21
Fig 2
Fig 3
of the combustion source, in effect forming the first section of
the exhaust duct, with the existing exhaust stack lifted or cut
to accommodate the economizer.
NOTE: Structural integrity of the building should be verified (by
others) prior to installing an economizer by suspending from
the ceiling.
4.3 VERTICAL INSTALLATION
For vertical flow units it is recommended that the unit be
completely supported either by a floor support structure or by
threaded rods from the ceiling (design and supply of support
by others).
In no case should the static load on the economizer inlet
or outlet flange exceed 500 pounds. In no case should any
moment be applied to the economizer inlet or outlet. Lifting
lugs are placed on top of the economizer and on each side.
Actual number depends on the model, please refer to the
specification drawing for the specific VHX model.
Apply expansion joints (supplied by others) as required by
the installation to ensure that no outside forces from thermal
expansion to either the exhaust gas connections or to the
piping will be permitted.
4.4 HORIZONTAL INSTALLATION
For horizontal flow units the economizer must be suspended
from the ceiling as permitted or set in place on a structural
support (designed by others) as permitted.
Lifting lugs are placed on top of the economizer and on each
side. Actual number depends on the model, please refer to
the specification drawing for the specific VHX model.
Structural integrity of the building should be verified (by
others prior to installing an economizer by suspending from
the ceiling. Apply expansion joints (supplied by others) as
required by the installation to ensure that no outside forces
from thermal expansion to either the exhaust gas connections
or to the piping will be permitted.
