Carrier 59SP5A Installation, Start-Up, Operating And Service And Maintenance Instructions page 40

2. Slide the plastic vent pipe adapter over the length of the
vent pipe down to the furnace casing. Mark the pipe where
it is flush with the outlet of the adapter.
3. Remove the pipe from the furnace and the adapter and cut
off any excess pipe.
4. Clean and prime the end of the pipe that is flush with the
vent adapter with a primer that is appropriate for the type of
pipe being used.
5. Re- -insert the pipe through the casing into the vent elbow.
6. Tighten the clamp around the outlet of the vent elbow.
Torque the clamp to 15 lb- -in.
7. Apply cement to the end of the pipe and to the inside of the
plastic vent adapter.
8. Slide the adapter over the vent pipe and align the screw
holes in the adapter with the dimples in the furnace casing.
9. Pilot drill 1/8- -in. screw holes for the adapter in the casing
and secure the adapter to the furnace with sheet metal
screws.
10. Loosen the clamps on the rubber vent coupling.
11. Slide the end of the coupling with notches in it over the
standoffs in the vent pipe adapter.
12. Tighten the clamp of the coupling over the vent pipe
adapter. Torque the lower clamp around the vent pipe
adapter to 15 lb- -in.
13. Pilot drill a 1/8- -in. hole in the combustion air pipe adapter.
14. Complete the vent and combustion air pipe as shown in
"Install the Vent and Combustion Air Pipe"
Installing the Vent Termination
Roof Terminations
A roof termination of any type will require a 4-in. (102 mm)
flashing for a 2 in. (51 mm) concentric vent or a 5- -in. diameter
(127 mm) flashing for a 3-in. (76 mm) concentric vent kit. For
two-pipe or single pipe vent systems, a flashing for each pipe of the
required diameter will be necessary.
It is recommended that the flashing be installed by a roofer or
competent professional prior to installing the concentric vent. The
terminations can be installed on a flat or pitched roof.
Concentric Vent
Single or multiple concentric vent must be installed as shown in
Fig. 47. Maintain the required separation distance between vents
or pairs of vents as shown in Fig. 47 and all clearance shown in
Fig. 45.
Cut one 4- -in. (102 mm) diameter hole for 2- -in. (51 mm) kit, or
one 5- -in. (127 mm) diameter hole for 3- -in. (76 mm) kit in the
desired location.
Loosely assemble concentric vent/combustion air termination
components together using instructions in kit.
Slide assembled kit with rain shield REMOVED through hole in
wall or roof flashing.
NOTE: Do not allow insulation or other materials to accumulate
inside of pipe assembly when installing it through hole.
Disassemble loose pipe fittings. Clean and cement using same
procedures as used for system piping.
Two- -Pipe and Single- -Pipe Terminations
Single and two pipe vent must be installed as shown in Fig. 47 and
48. Maintain the required separation distance between vents or
pairs of vents as shown in Fig. 47 and 48. and all clearance shown
in Fig. 45 and 46 .
Cut the required number of holes in the roof or sidewall for vent
and (when used) combustion air pipes. Sidewall holes for two-pipe
vent terminations should be side-by-side, allowing space between
the pipes for the elbows to fit on the pipes.
Holes in the roof for two pipe terminations should be spaced no
more than 18 in. (457 mm) apart.
Termination elbows will be installed after the vent and (if used)
combustion air pipe is installed.
Sidewall Terminations
Concentric Vent
Determine an appropriate location for termination kit using the
guidelines provided in section "Locating The Vent Termination" in
this instruction.
1. Cut one 4- -in. diameter hole for 2- -in. kit, or one 5- -in. dia-
meter hole for 3- -in. kit.
2. Loosely assemble concentric vent/combustion air termina-
tion components together using instructions in kit.
3. Slide assembled kit with rain shield REMOVED through
hole.
NOTE: Do not allow insulation or other materials to accumulate
inside of pipe assembly when installing it through hole.
4. Locate assembly through sidewall with rain shield posi-
tioned no more than 1- -in. (25 mm) from wall as shown in
Fig. 47.
5. Disassemble loose pipe fittings. Clean and cement using
same procedures as used for system piping.
2-Pipe and 1-Pipe Vent Termination
Determine an appropriate location for termination kit using the
guidelines provided in section "Locating The Vent Termination" in
this instruction.
1. Cut 2 holes, 1 for each pipe, of appropriate size for pipe size
being used.
2. Loosely install elbow in bracket and place assembly on
combustion- -air pipe.
3. Install bracket as shown in Fig. 47 and 49.
NOTE: For applications using vent pipe option indicated by
dashed lines in Fig. 47 and 48, rotate vent elbow 90_ from
position.
4. Disassemble loose pipe fittings. Clean and cement using
same procedures as used for system piping.
(Direct Vent / 2-Pipe System ONLY)
When 2 or more furnaces are vented near each other, 2 vent
terminations may be installed as shown in Fig. 47, but next vent
termination must be at least 36 in. (914 mm) away from first 2
terminations. It is important that vent terminations be made as
shown in Fig. 47 to avoid recirculation of flue gases.
Inducer Outlet Restrictor
To improve efficiency and operation of 40,000 BTUH input
models on very short vent systems, an inducer outlet restrictor is
required to be installed on the outlet of the inducer assembly. The
outlet restrictor is shipped in the loose parts bag.
To determine if the outlet restrictor is required, see Table 13 and
Table 15. Failure to use an outlet choke when required may
result in flame disturbance or flame sense lockout.
To install the outlet restrictor:
1. Remove the vent elbow from the inducer outlet.
2. Align the lock tabs on the outlet restrictor with the slots on
inside outlet of the inducer assembly.
3. Snap the outlet restrictor in place.
4. Re-install the vent elbow.
5. Torque vent elbow clamp 15-lb. in.
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