Carrier 58CTA Installation And Service Instructions Manual page 34

NOTE: Vent connector length for connector sizing starts at
furnace vent elbow. The 4 inch vent elbow is shipped for upflow
configuration and may be rotated for other positions. Remove the
3 screws that secure vent elbow to furnace, rotate furnace vent
elbow to position desired, re-install screws. The factory-supplied
vent elbow does NOT count as part of the number of vent
connector elbows.
The vent connector can exit the door through one of 5 locations on
the door.
1. Attach the single wall vent connector to the furnace vent
elbow, and fasten the vent connector to the vent elbow with at
least two field-supplied, corrosion-resistant, sheet metal
screws located 180° apart.
→
NOTE: An accessory flue extension KGAFE0112UPH is avail-
able to extend from the furnace elbow to outside the furnace
casing. If flue extension is used, fasten the flue extension to the
vent elbow with at least two field-supplied, corrosion-resistant,
sheet metal screws located 180° apart. Fasten the vent connector to
the flue extension with at least two field-supplied, corrosion-
resistant sheet metal screws located 180° apart.
2. Vent the furnace with the appropriate connector as shown in
Fig. 34-46.
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and
wear appropriate protective clothing, safety glasses and
gloves when handling parts and servicing furnaces.
3. Orient the door to determine the correct location of the door
cutout to be removed.
4. Use aviation-type tin snips to remove the correct U-shaped
cut-out in door.
→
NOTE: If this furnace is equipped with knockouts in the door for
the vent, a number of techniques can be used to remove these
knockouts as seen in Fig. 47 through 51. The knockout in the
bottom of the door is unique due to its flanging and is not easily
removed by first cutting the two tie points at the edge of the door,
using aviation-type tin snips. (See Fig. 47.) A sharp blow to the
rounded end of the knockout (See Fig. 48.) will separate more tie
points and allow the knockout to be pulled loose. (See Fig. 49.)
Remove all burrs and sharp edges.
For the knockouts in the other locations on the door (top and
sides), tin snips can also be used along the door edges; however,
→ Fig. 47—Using Tin Snips to Cut Tie Points
→ Fig. 48—Rounded End of Knockout
→ Fig. 49—Knockout Pulled Loose
32
A04127
A04128
A04129