Carrier 58MSA040-08 Installation, Start-Up, And Operating Instructions Manual page 35

and &y. Assemble theelastomeric (rllbber) ventcoupling
(with 2loose c lamps) onto inducer housing connection. Insert
the 2-in. d iameter vent p ipe through theelastomeric (rllbber)
coupling and _hlly intoinducer housing connection untilit
bottoms onthe internal stop.
Tighten both clamps to secure the
pipe to inducer housing. Tighten the clamp screws to 15 inMb.
of torque.
5. Install casing hole filler cap (fhctolT-supplied in loose parts
bag) in unused vent pipe casing hole.
VENT EXTENSION PIPE
Some filrnaces are supplied with a PVC vent extension pipe
(2-in. diameter by 12=in. tong). This pipe has a built-in
channel to assist vent condensate disposal. When this vent
extension pipe is supplied, it must be used to connect the field
vent pipe to filrnace inducer housing on ALL upflow and
downflow applications.
NOTE: See label on vent extension pipe for proper installation
This pipe may be shortened if an elbow is used to connect vent
extension robe to field-installed vent pipe.
5. Working fiom fi/rnace to outside, cut pipe to required
length(s).
7. Deburr inside and outside of pipe.
8. Chamfer outside edge of pipe for better distribution of primer
and cement.
9. Clean and d_ all surfitces to be joined.
10. Check &y fit of pipe and mark insertion depth on pipe.
NOTE: It is recommended that all pipes be cut, prepared, and
preassembled before pem?anently cementing any joint.
11. After pipes have been cut and preassembled, apply generous
layer of cement primer to pipe fitting socket and end of pipe
to insertion mark. Quickly apply approved cement to end of
pipe and fitdng socket Cover primer). Apply cement in a light,
uni[bm_ coat on inside of socket to prevent buildup of excess
cement. Apply second coat.
12. While cement is still wet, twist pipe into socket with 1/4 turn.
Be sure pipe is [:ully inserted into fitting socket.
13. Wipe excess cement fiom joint. A continuous bead of cement
will be visible around perimeter of a properly made joint.
14. Handle pipe joints carefidly until cement sets.
15. Support vent piping a minimum of every 5 ft (3 ft for SDR=2!
or -26 PVC) using perforated metal hanging shap.
16. Slope vent pipe downward toward Nrnace a minimum of 1/4
in. per linear ft with no sags between hangers.
17. Use appropriate methods to seal openings where vent pipe
passes through roof or sidewall.
Extended Exposed Sidewall Pipes
Sidewall vent pipe tem?ination may be extended beyond area
shown in Fig. 40 in outside ambient by insulating pipe as indicated
in Table 9.
1. Detemline vent pipe diameter, as stated above, using total pipe
length and number of elbows.
2. Find appropriate temperature fPr your application and furnace
model using winter design temperature (used in load calcula=
tions).
3. Detem_ine required insulation thickness fbr exposed pipe
lengths.
NOTE: Pipe length (ft) specified l\)r maximum pipe lengths
located in unconditioned spaces cannot exceed total allowable pipe
length as specified in Table 8.
35
VENT TERMINATION
Vent pipe must terminate either through roof or sidewall. See
Table 10 _br required clearances. See Fig 39, 40, and 41 _br
exterior piping an'angements
Consideration of the _Pllowing should be made when determining
an appropriate location for tem_ination:
1. (omply with all clearance requirements stated in Table 10.
2. Termination should be positioned where vent vapors will not
damage plants/shrubs or air conditioning equipment.
3. Tem_ination should be positioned where it will not be dan>
aged by or subjected to foreign objects such as stones, balls,
etc.
4. Termination should be positioned where vent vapors are not
objectionable.
MULTIVENTING
When 2 or more 58MSA Furnaces are vented near each other, each
fitmace must be individually vented NEVER common vent or
breach vent 58MSA fiu_aces
Step lO--Condensate
Drain
GENERAL
Condensate trap is shipped installed in the blower shelf and [itctory
connected _br UPFLOW applications. Condensate trap must be
RELOCATED _br use in DOVv_TLOW and HORIZONTAL
applications.
(ondensate trap MUST be used for all applications.
An external trap is not required when connecting the field drain to
this condensate trap.
The field drain connection (condensate flap or drain robe coupling)
is sized fPr 1i2=im CPV(, 1/2-in. PVC, or 5/8=in. ID robe
connection.
Drain pipe and fitdngs must conform to ANSI standards and
ASTM D1785, D2466 or D2846. CPVC or PV( cement must
conform to ASTM D2564 or F493. Primer must conform to ASTM
F656. In Canada, use CSA or ULC listed schedule 40 CPV( or
PVC drain pipe, fittings, and cement.
When a condensate pump is required, select a pump which is
approved tbr condensing furnace applications. To avoid conden-
sate spillage, select a pump with an overflow switch.
UNIT MAY NOT OPERATE
Failure to _bllow this caution may result in intem_ittent unit
operation.
Unit must not be installed, operated, and then mined off and
left in an unconditioned structure doting cold weather when
temperature &ops to 32°F and below unless drain trap and
&ain line have adequate [i'eeze protection. See Service and
Maintenance Instructions _Br winterizing procedures. (See
Fig. 15.)
Furnace condensate is mildly acidic, typically in the pH range of
32 to 4.5 Due to cotl'osive nature of unneutralized condensate, a
condensate pH neutralizing filter may be desired. Check with local
authorities to determine if a pH neutralizer is required
APPLICATION
The f_lrnace, A/C, and humidifier drains may be combined and
drained together. The Ai( drain retest have an external, field-
supplied trap prior to the fi/rnace drain connection. Al! drain
connections (furnace, A/C, or humidifier) must be tem_inated into