Air For Combustion; Duct Connections; Gas Piping - Trane GGAA Installation, Operation And Maintenance Manual

I I n n s s t t a a l l l l a a t t i i o o n n

Air For Combustion

C C a a r r b b o o n n M M o o n n o o x x i i d d e e P P o o i i s s o o n n i i n n g g ! !
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 t t h h e e s s e e i i n n s s t t r r u u c c t t i i o o n n s s 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 C C a a r r b b o o n n M M o o n n o o x x i i d d e e P P o o i i s s o o n n i i n n g g
( ( s s y y m m p p t t o o m m s s i i n n c c l l u u d d e e g g r r o o g g g g i i n n e e s s s s , , l l e e t t h h a a r r g g y y , , i i n n a a p p p p r r o o p p r r i i a a t t e e t t i i r r e e d d n n e e s s s s , , o o r r f f l l u u - - l l i i k k e e s s y y m m p p t t o o m m s s ) )
w w h h i i c c h h 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 . .
N N e e v v e e r r o o p p e e r r a a t t e e a a u u n n i i t t w w i i t t h h o o u u t t c c o o m m b b u u s s t t i i o o n n a a i i r r a a n n d d f f l l u u e e g g a a s s p p i i p p i i n n g g i i n n p p l l a a c c e e . . E E a a c c h h u u n n i i t t M M U U S S T T
h h a a v v e e a a n n i i n n d d i i v v i i d d u u a a l l v v e e n n t t p p i i p p e e ! ! E E a a c c h h u u n n i i t t M M U U S S T T N N O O T T b b e e c c o o n n n n e e c c t t e e d d t t o o o o t t h h e e r r v v e e n n t t s s y y s s t t e e m m s s o o r r
t t o o a a c c h h i i m m n n e e y y . . Y Y o o u u r r v v e e n n t t i i n n g g s s y y s s t t e e m m m m u u s s t t n n o o t t b b e e b b l l o o c c k k e e d d b b y y a a n n y y s s n n o o w w , , s s n n o o w w d d r r i i f f t t s s , , o o r r a a n n y y
f f o o r r e e i i g g n n m m a a t t t t e e r r . . I I n n s s p p e e c c t t y y o o u u r r v v e e n n t t i i n n g g s s y y s s t t e e m m t t o o e e n n s s u u r r e e a a d d e e q q u u a a t t e e v v e e n n t t i i l l a a t t i i o o n n e e x x i i s s t t s s a a t t a a l l l l
t t i i m m e e s s ! !
Appliances shall be installed in a location in which the facilities for ventilation permit satisfactory
combustion of gas, proper venting, and the maintenance of ambient temperature at safe limits
under normal conditions for use.
Appliances shall be located in such a manner as not to interfere with proper circulation of air
within the confined space. When buildings are so tight that normal infiltration does not meet air
requirements, outside air shall be introduced per Sections 1.3.4.2 and 1.3.4.3 of ANSI Z223.1 for
combustion air requirements. A permanent opening or openings having a total free area of not
less than one square inch per 5,000 Btu/Hr of total input rating of all appliance within the space
shall be provided. Refer to the Indoor Duct Furnace Manual supplied with your unit for more
requirements.

Duct Connections

All ductwork must be properly supported so that no strain is put on the unit. Do not alter or bend
the discharge duct flanges supplied on your make-up air unit.
Duct connections must have a removable access panel in the duct which is connected to a duct
furnace. The duct openings shall be accessible when the unit is installed in service, and shall be
of such size that smoke or reflected light may be observed inside the casing to indicate the
presence of leaks in the heating element. The covers for the panels shall be attached in such a
manner as to prevent leaks. Ducts (or optional outside air hoods) exposed to the outdoors must
be insulated and sealed to prevent water from entering either the unit or building through the
duct.
If a single, double or triple duct furnace only unit is connected to a return air duct, or any other
inlet air restriction, the appliance shall be installed on the positive pressure side of the air
circulating blower.
When connecting return air duct to Standard or High CFM cabinets, attach duct to return air
opening flange when no dampers are used. Otherwise, if dampers are used, attach return air duct
around collar at bottom of damper assembly. Also refer to the Dimensional Data section of this
manual, Submittal Data Sheets and Indoor Duct Furnace Manual specified for your unit.
Gas Piping††
All gas piping must be installed in accordance with local codes. It is required that a ground union
be installed adjacent to the gas valve of each duct furnace, and a ground union be installed just
external of each duct furnace for unit servicing. On vertical runs, a drip leg should be provided
upstream of any control manifold. A gas shutoff valve should be, or may be required by local
codes, installed upstream of the external ground union for each duct furnace. A 1/8 inch N.P.T.
plugged tapping, accessible for test gauge connection, must be installed immediately upstream
of the unit gas supply connection.
N N o o t t e e : : †† For complete Gas Piping installation, see the Indoor Gas-Fired Duct Furnace Installation
Gas piping must be installed to allow for removal of burner drawer for unit maintenance. Refer to
Figure 5, p.
16
and Service Manual.
14, and the maintenance section.
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