Trane GGAA, Installation, Operation And Maintenance Manual

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30 MUA-SVX005B-EN
Maintenance
W WA AR RN NIIN NG G
H Ha azza arrd do ou uss V Vo olltta ag ge e!!
F Fa aiillu urre e tto o d diisscco on nn ne ecctt p po ow we err b be effo orre e sse errv viicciin ng g cco ou ulld d rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss iin njju urry y..
D Diisscco on nn ne ecctt a allll e elle eccttrriicc p po ow we err,, iin nccllu ud diin ng g rre em mo otte e d diisscco on nn ne eccttss b be effo orre e sse errv viicciin ng g.. F Fo ollllo ow w
p prro op pe err llo occkko ou utt//tta ag go ou utt p prro occe ed du urre ess tto o e en nssu urre e tth he e p po ow we err cca an n n no ott b be e iin na ad dv ve errtte en nttlly y
e en ne errg giizze ed d.. V Ve erriiffy y tth ha att n no o p po ow we err iiss p prre esse en ntt w wiitth h a a v vo ollttm me ette err..
W WA AR RN NIIN NG G
C Ch he ecckk o off S Sa affe etty y D De ev viicce ess R Re eq qu uiirre ed d!!
F Fa aiillu urre e tto o d do o ffo ollllo ow w iin nssttrru uccttiio on nss b be ello ow w cco ou ulld d cca au usse e u un nssa affe e cco on nd diittiio on nss a an nd d rre essu ulltt iin n d de ea atth h,,
sse erriio ou uss iin njju urry y o orr p prro op pe errtty y d da am ma ag ge e..
A Allll ssa affe etty y cco on nttrro ollss M MU US ST T b be e cch he ecckke ed d b be effo orre e sstta arrttiin ng g tth he e u un niitt a an nd d d du urriin ng g rre eg gu ulla arr
m ma aiin ntte en na an ncce e!! C Ch he ecckk a an nd d tte esstt tth he e o op pe erra attiio on na all ffu un nccttiio on nss o off a allll ssa affe etty y d de ev viicce ess ssu up pp plliie ed d w wiitth h
tth hiiss u un niitt..
• 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
Figure 5, p. 14 ). Service panels provide easy access to
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.
Main Burner Drawer Assembly
W WA AR RN NIIN NG G
H Ha azza arrd do ou uss V Vo olltta ag ge e a an nd d G Ga ass!!
F Fa aiillu urre e tto o ttu urrn n o offff g ga ass o orr d diisscco on nn ne ecctt p po ow we err b be effo orre e sse errv viicciin ng g cco ou ulld d rre essu ulltt iin n a an n e ex xp pllo ossiio on n
o orr e elle eccttrro occu uttiio on n w wh hiicch h cco ou ulld d rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss iin njju urry y..
T Tu urrn n o offff tth he e g ga ass ssu up pp plly y a an nd d d diisscco on nn ne ecctt a allll e elle eccttrriicc p po ow we err,, iin nccllu ud diin ng g rre em mo otte e d diisscco on nn ne eccttss,,
b be effo orre e sse errv viicciin ng g tth he e u un niitt.. F Fo ollllo ow w p prro op pe err llo occkko ou utt//tta ag go ou utt p prro occe ed du urre ess tto o e en nssu urre e tth he e p po ow we err
cca an n n no ott b be e iin na ad dv ve errtte en nttlly y e en ne errg giizze ed 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
furnace; swing downward the piping to clear drawer.
3. Disconnect duct furnace gas valve wiring taking note of all wire locations. Disconnect ignitor
and flame sensing probe wires at ignition control module and any other wires.
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
locating spring, until the rear of the burner clears slot in back of burner drawer.