Combustion Air Considerations; Location - Trane GRAA Installation, Operation And Maintenance Manual

G G e e n n e e r r a a l l S S a a f f e e t t y y R R e e q q u u i i r r e e m m e e n n t t s s

Combustion Air Considerations

The presence of chlorine vapors or other corrosive vapors in the combustion air supply for gas-fi
red heating equipment presents a potential corrosive hazard. Chlorine will, when exposed to
flame, precipitate from the compound (usually freon or degreaser vapors) and go into solution
with any condensation that is present in the heat exchanger or associated parts. The result is
hydrochloric acid which will readily attack all metals, including 300 grade stainless steel. Care
should be taken to separate these vapors from the combustion process. This may be done by
wise location of the unit with regard to exhausters or prevailing wind direction.

Location

M M o o u u n n t t i i n n g g I I n n t t e e g g r r i i t t y y ! !
F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w i i n n s s t t r r u u c c t t i i o o n n b b e e l l o o w w c c o o u u l l d d r r e e s s u u l l t t i i n n d d e e a a t t h h o o r r s s e e r r i i o o u u s s i i n n j j u u r r y y o o r r p p o o s s s s i i b b l l e e
e e q q u u i i p p m m e e n n t t o o r r p p r r o o p p e e r r t t y y - - o o n n l l y y d d a a m m a a g g e e . .
E E n n s s u u r r e e t t h h e e r r o o o o f f s s t t r r u u c c t t u u r r e e s s u u p p p p o o r r t t s s a a r r e e s s t t r r o o n n g g e e n n o o u u g g h h t t o o s s u u p p p p o o r r t t t t h h e e w w e e i i g g h h t t o o f f t t h h e e u u n n i i t t
a a n n d d a a n n y y a a c c c c e e s s s s o o r r i i e e s s . .
Before placing rooftop unit in its permanent location, make certain that the roof is capable of
carrying the additional load of this equipment. Check the unit weight given at the end of this
manual.
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Figure 1. Rigging
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MUA-SVX003B-EN