Carrier 58MXA Installation, Start-Up, And Operating Instructions Manual page 32

TaNe
7--Maximum Allowable Pipe Length (ft) (Continued)
ALTITUDE (FT}
800t to 9000@
ALTITUDE (FT)
9001 to I0,000_
UNiT SBZE
040-08
040-I2
060-08
060-12
060-16
080-I2
080-16
080-20
100-16
100-20
120-20
140-20
UNIT SIZE
040-08
040-12
060-08
060-12
060-16
080-12
080-16
080-20
100-16
100-20
120-20
140-20
TERMINATBON
TYPE
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 3-in
Concentric
2 Pipe or 3-in.
Concentric
TERMINATION
TYPE
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 2-in
Concentric
2 Pipe or 3-in
Concentric
2 Pipe or 3-in.
Concentric
PIPE DmA NUMBER OF 90 ° ELBOWS
(IN.)* 1 2 3 4 5 6
1-1/2 46 41 36 31 29 24
2 62 60 58 56 55 53
1-1/2 11 6 NA NA NA NA
2 49 44 42 37 35 34
2 33 28 17 12 10 NA
2-1/2 62 60 58 56 55 53
2-1/2 23 15 7 5 NA NA
3 59 54 49 44 39 34
31- no disk 10 NA NA NA NA NA
41- no disk 35 30 25 20 15 10
NA
PiPE DtA NUMBER OF 90 ° ELBOWS
(IN.)* 1 2 3 4 5
1-1/2 42 37 32 27 25
2 57 55 53 51 49
6
2O
47
45 40 38 33 31 29
2 30 25 14 9 7 NA
2-1/2 57 55 53 51 49 47
2-1/2 21 13 5 NA NA NA
3 54 49 44 39 34 29
4t no disk 10 5 NA NA NA NA
NA
Disk usage-Unless otherwise specified, use perforated disk assembly (factory-supplied in loose parts bag). If one disk is stated, separate 2 halves of perforated disk
assembly and use shouldered disk half When using shouldered disk half, install screen side toward iNet box.
tWide radius elbow
SVent sizing for Canadian installations over 4500 ft (1370 m) above sea level are subject to acceptance by the local authorities having judsdiction.
NA-Not Allowed; pressure switch will not make.
NOTES:
1 Do not use pipe size greater than those specified in table or incomplete combustion, flame disturbance, or flame sense lockout may occur
2 Size both the combustion-air and vent pipe independently, then use the larger diameter for both pipes
3 Assume two 45 ° elbows equal one 90 ° elbow Long radius elbows are desirable and may be required in some cases
4 Elbows and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count.
5 The minimum pipe length is 5 ft for all applications
6 Use 3-in. diameter vent termination kit for instNlations requiring 4-in diameter pipe.
AIR AND VENT
8 314" FOR 3" KIT
6 314" FOR 2" KIT
MAINTAIN 12 IN.
CLEARANCE ABOVE HIGHEST
ANTICIPATED SNOW LEVEL.
MAXIMUM OF 24 IN. ABOVE ROOF.
A87224
Fig. 36--Roof Termination (Preferred)
e, Termination kit should be positioned where vent vapors are 3, Loosely assemble concentric vent air termination components
not objectionable
together using instructions in kit
2, Cut one 4-in, diameter hole for 2-in, kit, or one 5-in, diameter 4, Slide assembled kit with rain shield REMOVED through hole,
hole for 3-in, kit,
32