Downflow furnace), Fig. 4—position of burner and ignitor (side .view) – Carrier 58DXC User Manual
Page 2
Attention! The text in this document has been recognized automatically. To view the original document, you can use the "Original mode".
Fig. 1—Furnace Components
(Upflow Furnace)
A85156
(Downflow Furnace)
1. Turn off gas and electrical supplies to furnace.
2. Remove control compartment access door.
3. Remove burner enclosure front.
4. Remove combustion-air diffuser. (See Fig. 3.)
NOTE:
Before removing burners, note routing of wiring in burner
compartment. Also, refer to label on burner enclosure front
regarding wiring.
■COMBUSTION-
AIR
DIFFUSER
5. Remove screws that secure burner bracket and remove
bracket. Remove burners carefully, from left to right, to
prevent damaging ignitor.
6. Remove and discard orifices from manifold.
7. Install No. 55 burner orifices provided in kit. Finger-tighten
orifices at least one full turn to prevent cross-threading, then
tighten orifices with a wrench. Enough orifices are supplied in
each kit for the largest furnace; discard unused orifices.
In the U.S., the full input rating with No. 55 burner propane
orifices is approved for altitudes up to 2000 ft. The input rating for
altitudes above 2000 ft must be reduced by 4 percent for each 1000
ft above sea level. Consult the current edition of the National Fuel
Gas Code NFPA No. 54/ANSI Z223.1, Part
8.1
and Appendix F,
Table F-4, for input adjustment for high altitude.
In Canada, the adjustments must be made in accordance with the
CAN/C.G.A.-B149 Installation Code.
8. Reinstall burners, from right to left, and burner bracket.
Ensure that burner crossovers are aligned. See Fig. 4 and 5 for
proper orientation of ignitor and burners. Ensure wiring is
routed properly; see label on burner enclosure front regarding
wiring.
■'2/32"-►
&
r
''V32"
IGNITOR
ASSEMBLY
A91064
Fig. 4—Position of Burner and Ignitor (Side .View)
A84153
Fig. 3—Combustion-Air Diffuser Location
Fig. 5—Position of Burner and Ignitor (Top View)
WA