Carrier 58SX040-IBC - Manual (Page 5)

12. Use appropriate methods to seal openings where vent
and combustion-air pipes pass through roof or sidewall.
Vent Terminal Kit Installation— The combustion-air and
vent pipes must terminate outside the structure. The Car­
rier accessory vent termination kit for 2-in. diameter pipe
(required) must be installed as shown in Fig. 3, 4 or 5. Roof
termination, shown in Fig. 3, is preferred. The kit contains
extra parts for the various applications.
NOTE: The shaded portions of Fig. 3, 4 and 5 are consid­
ered part of the vent terminal and are provided in the vent
terminal kit. They should not be counted, therefore, in pipe
diameter calculations.
ROOFTOP VENT TERMINAL INSTALLATION (Fig. 3)
NOTE; The soHd-line arrangement in Fig. 3 is the preferred
arrangement; the dashed-Une arrangement is an option for
the combustion-air pipe.
1. Remove one 90° elbow from elbow and bracket assem­
bly provided in kit. Loosen screw so other elbow can
turn.
2. Loosely install elbow with bracket on combustion-air
pipe.
3. Loosely install pipe coupling, provided in kit, on prop­
erly cut vent pipe. Position coupling so that bracket
wiQ mount as shown in Fig. 3.
4. Disassemble loose pipe fittings. Clean them and apply
cement using procedures described in Combustion-Ah:
and Vent Piping.
5. Install bracket as shown in Fig. 3.
6. For apphcations using combustion-air pipe option (indi­
cated by dashed fines in Fig. 3), install 90-degree street
ell into 90-degree elbow, making a U-fitting. Install the
open end of 90-degree street ell onto combustion-air
pipe.
SIDEWALL VENT TERMINAL INSTALLATION-
Install kit as follows when combustion-air and vent pipes
exit through sidewall 12 in. or more above highest antici­
pated snow level or grade (Fig. 4).
NOTE: The solid-fine arrangement in Fig. 4 is preferred.
The dashed-fine arrangement is an option for the vent pipe
only.
1. Loosely install elbow and bracket assembly on
combustion-air and vent pipes.
2. Remove and disassemble elbow and bracket assembly.
3. Install elbows as shown in Fig. 4. Clean them and
apply cement using procedures described in Com­
bustion-Air and Vent Piping.
4. Install bracket as shown in Fig. 4.
5. Position vent-pipe assembly, maintaining a 12-in. sepa­
ration. Cement vent pipe in elbow as shown in Fig. 4.
6. For applications using vent-pipe option (indicated by
dashed fines in Fig. 4), rotate elbow 90° from position
shown.
Install kit as follows when combustion-air and vent pipes
exit through sidewall less than 12 in. above highest antici­
pated snow level or grade (Fig. 5):
NOTE: The solid-fine arrangement in Fig. 5 is preferred.
The dashed-fine arrangement shown is an option for the
vent pipe only.
1. Remove one elbow from the elbow and bracket assem­
bly. (The elbow remaining will be connected to
combustion-afir pipe).
2. Install the 90-degree street eU into the 90-degree elbow
remaining in elbow and bracket assembly, making a
U-fittmg.
3. Loosely install coupling on end of vent pipe.
4. Loosely install U-fitting and bracket as shown in
Fig. 5. Position U-fitting so that open end is against
building wall.
5. Loosely install vent-pipe assembly in coupling as
shown in Fig. 5.
6. Check required dimension as shown in Fig. 5.
7. Disassemble loose pipe fittings. Clean them and apply
cement using procedures described in Combustion-Air
and Vent Piping.
8. Install bracket as shown in Fig. 5.
CONDENSATE DRAIN
Route the condensate to a nearby floor drain or condensate
pump. If a condensate pump is required, it should have a
corrosion-resistant impeller and tank.
The 1/2-inch diameter schedule 40 PVC or CPVC condensate
drain pipe fittings must conform to ANSI standards and
ASTM D1785 and D2846. The schedule 40 PVC or CPVC
cement and primer must conform to ASTM F493 or D2564.
For proper condensate drainage, furnace must be within
1/2-in. of level. Highest corner of furnace must not be more
than 1/2-in. above lowest corner.
NOTE: The furnace contains an internal condensate trap;
do NOT install external trap.
1. Determine the side of furnace from which drain wfll
exit. Cut
Emd
preassemble drain piping (field-supplied)
directly to an open drain. Refer to Combustion-Air and
Vent Piping for instructions on preparing and cement­
ing plastic pipe.
2. Cement elbow on pipe assembly (factory supplied) to
condensate trap moimted on blower housing.
3. Using a second wrench to hold assembly, attach first
section of field-supplied drain pipe to compression cou­
pling provided.
4. When using schedule 40 PVC drain pipe, connect
adapter provided to end of pipe installed in compres­
sion fitting.
5. Attach field-supplied schedule 40 PVC adapter to
threaded factory adapter.
6. Cement remaining pipe joints.
START-UP, ADJUSTMENT, AND SAFETY CHECK
Adjusting Tuning Valve— Before firing the furnace, adjust
the pressure drop through the heat exchanger for maximum
efficiency, following the steps below.
A CAUTION
Be sure gas supply to furnace is turned off.
1. Install field-supplied plastic tee between pressure tap
on bottom of gas valve and pressure tube as shown in
Fig. 6.
2. Install second field-supplied plastic tee between pres­
sure switch and pressure tube from collector box. See
Fig. 6.
3. Connect slope gage to tees (Fig. 6.)
4. Close R-W circuit to start inducer motor.
5. Adjust tuning valve to obtain 0.83 ± 0.01 in. negative
water column.
6. Remove handle from tuning valve and recheck pres­
sure. Store handle in safe place.
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