Vent Termination; Multiventing; Condensate Drain; General - Carrier 58MVP Installation, Start-Up, And Operating Instructions Manual

ALTITUDE (FT)
8001 to 9000‡
ALTITUDE (FT)
9001 to 10,000‡
†Wide radius elbow.
‡Vent sizing for Canadian installations over 4500 ft (1370 m) above sea level are subject to acceptance by the local authorities having jurisdiction.
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. Assume two 45° elbows equal one 90° elbow. Long radius elbows are desirable and may be required in some cases.
3. Elbows and pipe sections within the furnace casing and at the vent termination should not be included in vent length or elbow count.
4. The minimum pipe length is 5 ft for all applications.
1. Comply with all clearance requirements stated in Table 9.
2. Termination should be positioned where vent vapors are not
objectionable.

MULTIVENTING

When 2 or more 58MVP Furnaces are vented near each other, each
furnace must be individually vented. NEVER common vent or
breach vent 58MVP furnaces.
Step 8—Condensate Drain

GENERAL

Condensate trap is shipped installed in the blower shelf and factory
connected for UPFLOW applications. Condensate trap must be
RELOCATED for use in HORIZONTAL applications.
Condensate 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 trap or drain tube coupling)
is sized for 1/2-in. CPVC, 1/2-in. PVC, or 5/8-in. ID tube
connection.
Drain pipe and fittings must conform to ANSI standards and
ASTM D1785, D2466, or D2846. CPVC or PVC cement must
conform to ASTM D2564 or F493. Primer must conform to ASTM
F656. In Canada, use CSA or ULC certified schedule 40 CPVC or
PVC drain pipe, fittings, and cement.
When a condensate pump is required, select a pump which is
approved for condensing furnace applications. To avoid conden-
sate spillage, select a pump with an overflow switch.
Table 7—Maximum Allowable Pipe Length (ft) (Continued)
PIPE DIA
UNIT SIZE
(IN.)*
1-1/2
040-08
040-12
2
060-08
1-1/2
060-12
2
060-16
080-12
2
080-16
2-1/2
080-20
2-1/2
100-16
100-20
3
3†
120-20
4‡ no disk
PIPE DIA
UNIT SIZE
(IN.)*
1-1/2
040-08
040-12
2
060-08
060-12 2
060-16
080-12
2
080-16
2-1/2
080-20
2-1/2
100-16
100-20
3
3†
120-20
4‡ no disk
NUMBER OF 90° ELBOWS
1 2 3
46 41 36
62 60 58
11 6 NA
49 44 42
33 28 17
62 60 58
23 15 7
59 54 49
43 41 39
35 30 25
NUMBER OF 90° ELBOWS
1 2 3
42 37 32
57 55 53
45 40 38
30 25 14
57 55 53
21 13 5
54 49 44
39 37 35
10 5 NA
Furnace condensate is mildly acidic, typically in the pH range of
3.2 to 4.5. Due to corrosive nature of this condensate, a condensate
pH neutralizing filter may be desired. Check with local authorities
to determine if a pH neutralizer is required.

APPLICATION

The furnace, A/C, and humidifier drains may be combined and
drained together. The A/C drain must have an external, field-
supplied trap prior to the furnace drain connection. All drain
connections (furnace, A/C, or humidifier) must be terminated into
an open or vented drain as close to the respective equipment as
possible to prevent siphoning of the equipment's drain.
See Fig. 33 for example of possible field drain attachment using
1/2-in. CPVC or PVC tee for vent and A/C or humidifier drain
connection.
Outdoor draining of the furnace is permissible if allowed by local
codes. Caution should be taken when freezing ambient may freeze
drain pipe and prohibit draining.
PERSONAL INJURY AND PROPERTY DAMAGE
HAZARD
Failure to follow this warning could result in property damage
and personal injury or death.
Caution should be taken to prevent draining where slippery
conditions may cause personal injuries. Excessive condensate
draining may cause saturated soil conditions which may result
in damage to plants.
29
4 5 6
31 29 24
56 55 53
NA NA NA
37 35 34
12 10 NA
56 55 53
5 NA NA
44 39 34
37 35 34
20 15 10
4 5 6
27 25 20
51 49 47
33 31 29
9 7 NA
51 49 47
NA NA NA
39 34 29
33 31 29
NA NA NA