Maintenance; Main Burner Drawer Assembly - Trane GGAA Installation, Operation And Maintenance Manual

Maintenance

H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e ! !
F F a a i i l l u u r r e e t t o o d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g 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 . .
D D i i s s c c o o n n n n e e c c t t a a l l l l e e l l e e c c t t r r i i c c p p o o w w e e r r , , i i n n c c l l u u d d i i n n g g r r e e m m o o t t e e d d i i s s c c o o n n n n e e c c t t s s b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g . . F F o o l l l l o o w w
p p r r o o p p e e r r l l o o c c k k o o u u t t / / t t a a g g o o u u t t p p r r o o c c e e d d u u r r e e s s t t o o e e n n s s u u r r e e t t h h e e p p o o w w e e r r c c a a n n n n o o t t b b e e i i n n a a d d v v e e r r t t e e n n t t l l y y
e e n n e e r r g g i i z z e e d d . . V V e e r r i i f f y y t t h h a a t t n n o o p p o o w w e e r r i i s s p p r r e e s s e e n n t t w w i i t t h h a a v v o o l l t t m m e e t t e e r r . .
C C h h e e c c k k o o f f S S a a f f e e t t y y D D e e v v i i c c e e s s R R e e q q u u i i r r e e d d ! !
F F a a i i l l u u r r e e t t o o d d 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 s s b b e e l l o o w w c c o o u u l l d d c c a a u u s s e e u u n n s s a a f f e e c c o o n n d d i i t t i i o o n n s s a a n n 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 , ,
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 r r o o p p e e r r t t y y d d a a m m a a g g e e . .
A A l l l l s s a a f f e e t t y y c c o o n n t t r r o o l l s s M M U U S S T T b b e e c c h h e e c c k k e e d d b b e e f f o o r r e e s s t t a a r r t t i i n n g g t t h h e e u u n n i i t t a a n n d d d d u u r r i i n n g g r r e e g g u u l l a a r r
m m a a i i n n t t e e n n a a n n c c e e ! ! C C h h e e c c k k a a n n d d t t e e s s t t t t h h e e o o p p e e r r a a t t i i o o n n a a l l f f u u n n c c t t i i o o n n s s o o f f a a l l l l s s a a f f e e t t y y d d e e v v i i c c e e s s s s u u p p p p l l i i e e d d w w i i t t h h
t t h h i i s s u u n n i i t t . .
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Main Burner Drawer Assembly

H H a a z z a a r r d d o o u u s s V V o o l l t t a a g g e e a a n n d d G G a a s s ! !
F F a a i i l l u u r r e e t t o o t t u u r r n n o o f f f f g g a a s s o o r r d d i i s s c c o o n n n n e e c c t t p p o o w w e e r r b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g 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 a a n n e e x x p p l l o o s s i i o o n n
o o r r e e l l e e c c t t r r o o c c u u t t i i o o n n 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 . .
T T u u r r n n o o f f f f t t h h e e g g a a s s s s u u p p p p l l y y a a n n d d d d i i s s c c o o n n n n e e c c t t a a l l l l e e l l e e c c t t r r i i c c p p o o w w e e r r , , i i n n c c l l u u d d i i n n g g r r e e m m o o t t e e d d i i s s c c o o n n n n e e c c t t s s , ,
b b e e f f o o r r e e s s e e r r v v i i c c i i n n g g t t h h e e u u n n i i t t . . F F o o l l l l o o w w p p r r o o p p e e r r l l o o c c k k o o u u t t / / t t a a g g o o u u t t p p r r o o c c e e d d u u r r e e s s t t o o e e n n s s u u r r e e t t h h e e p p o o w w e e r r
c c a a n n n n o o t t b b e e i i n n a a d d v v e e r r t t e e n n t t l l y y e e n n e e r r g g i i z z e e d d . .
To remove the main burner drawer assembly (also refer to Indoor Duct Furnace Installation and
Service Manual) for servicing the burners, proceed as follows:
1. Shut off the gas supply at the gas shutoff valve and electrical power to the unit.
2. Break the union upstream of duct furnace gas valve and loosen the union external to the
3. Disconnect duct furnace gas valve wiring taking note of all wire locations. Disconnect ignitor
4. Remove the locking screws holding the burner drawer assembly in position.
5. Slide the burner drawer out of the duct furnace.
6. Removal of burners is accomplished by sliding burner towards manifold, compressing
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These units have been developed for indoor installation. Maintenance is required and it is
suggested that the following unit servicing and inspections be performed routinely. Also read
in entirety and refer to the Indoor Duct Furnace Manual for maintenance requirements.
Inspect area near unit to be sure that there is no combustible material located within the
minimum clearance requirements (See
the gas controls (located in duct furnace section), the blower compartment, the electrical
cabinet and the supply plenum. To remove the service door from any of these compartments,
refer to access panel removal section in beginning of this manual.
The pilot burner can be serviced by removing the pilot plate from the main burner drawer
assembly.
The (rear) high limit safety switch is accessible by removing the exterior upper jacket, then
remove the mounting plate from the side panel of the heat exchanger. This limit must have
proper surface contact when reinstalled. The (front) primary safety limit is accessible by
removing the mounting cover from the furnace jacket.
furnace; swing downward the piping to clear drawer.
and flame sensing probe wires at ignition control module and any other wires.
locating spring, until the rear of the burner clears slot in back of burner drawer.
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W W A A R R N N I I N N G G
Figure 5, p. 14). Service panels provide easy access to
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MUA-SVX005B-EN