Primary Air Shutter Adjustment; Controls - Trane GGAA Installation, Operation And Maintenance Manual

Primary Air Shutter Adjustment

After the unit has been in operation for at least 15 minutes, adjust the primary air flow to the
burners. Turn the friction-locked manually rotated air shutters clockwise to close, counter
clockwise to open. For correct air adjustment, close the air shutter until yellow tips in the flame
appear. Then open the air shutter to the point just beyond the position where yellow tipping
disappears.

Controls

N N o o t t e e : : Also see the Indoor Duct Furnace Manual
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MUA-SVX005B-EN
P P r r i i m m a a r r y y L L i i m m i i t t C C o o n n t t r r o o l l : : The primary limit control is a factory installed component surface
mounted in the inlet airstream at the end of the heat exchanger. When the temperature
reaches the limit set point, normally caused by insufficient air throughput, all gas is shutoff.
The limit control has an automatic reset and once the unit has cooled, it will reset itself. This
is a safety control and if cycling on the primary limit is noted, corrective action must be taken.
See unit wiring diagram for electrical location. This control must never be bypassed. Upon
completion of unit installation, the primary limit must be checked for proper operation. This
can be accomplished by removing power to the indoor air blower and a call for heat.
C C l l o o g g g g e e d d F F i i l l t t e e r r S S w w i i t t c c h h : : (Optional) The clogged filter switch monitors the pressure differential
across the air filters. If this pressure differential becomes too great, the switch will alert of this
condition. At this point the air filters must either be cleaned or replaced. The switch will reset
itself.
F F i i r r e e s s t t a a t t : : (Optional) Located in either the return airstream, the supply airstream, or both, this
control monitors temperatures with set points which are field adjustable. If the temperature
exceeds the set point, the control will cease unit operation. To resume unit operation, a
manual reset of this control is required.
F F r r e e e e z z e e s s t t a a t t : : (Optional) Located in either the return airstream, the supply airstream, or both,
this control monitors temperatures with set points which are field adjustable. If the
temperature does not exceed the set point, the control will cease unit operation.
O O p p e e r r a a t t i i o o n n
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