Carrier 58MVP Installation, Start-up, And Operating Instructions Manual

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Carrier 58MVP Installation, Start-up, And Operating Instructions Manual Manual pdf 29 page image

1. Comply with all clearance requirements stated in Table 9.2. Termination should be positioned where vent vapors are notobjectionable.MULTIVENTINGWhen 2 or more 58MVP Furnaces are vented near each other, eachfurnace must be individually vented. NEVER common vent orbreach vent 58MVP furnaces.Step 8—Condensate DrainGENERALCondensate trap is shipped installed in the blower shelf and factoryconnected for UPFLOW applications. Condensate trap must beRELOCATED for use in HORIZONTAL applications.Condensate trap MUST be used for all applications.An external trap is not required when connecting the field drain tothis 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 tubeconnection.Drain pipe and fittings must conform to ANSI standards andASTM D1785, D2466, or D2846. CPVC or PVC cement mustconform to ASTM D2564 or F493. Primer must conform to ASTMF656. In Canada, use CSA or ULC certified schedule 40 CPVC orPVC drain pipe, fittings, and cement.When a condensate pump is required, select a pump which isapproved for condensing furnace applications. To avoid conden-sate spillage, select a pump with an overflow switch.Furnace condensate is mildly acidic, typically in the pH range of3.2 to 4.5. Due to corrosive nature of this condensate, a condensatepH neutralizing filter may be desired. Check with local authoritiesto determine if a pH neutralizer is required.APPLICATIONThe furnace, A/C, and humidifier drains may be combined anddrained together. The A/C drain must have an external, field-supplied trap prior to the furnace drain connection. All drainconnections (furnace, A/C, or humidifier) must be terminated intoan open or vented drain as close to the respective equipment aspossible to prevent siphoning of the equipment’s drain.See Fig. 33 for example of possible field drain attachment using1/2-in. CPVC or PVC tee for vent and A/C or humidifier drainconnection.Outdoor draining of the furnace is permissible if allowed by localcodes. Caution should be taken when freezing ambient may freezedrain pipe and prohibit draining.PERSONAL INJURY AND PROPERTY DAMAGEHAZARDFailure to follow this warning could result in property damageand personal injury or death.Caution should be taken to prevent draining where slipperyconditions may cause personal injuries. Excessive condensatedraining may cause saturated soil conditions which may resultin damage to plants.Table 7—Maximum Allowable Pipe Length (ft) (Continued)ALTITUDE (FT) UNIT SIZE PIPE DIA(IN.)*NUMBER OF 90° ELBOWS1 2 3 4 5 68001 to 9000‡040-08040-121-1/2 46 41 36 31 29 242 62 60 58 56 55 53060-08060-12060-161-1/2 11 6 NA NA NA NA2 49 44 42 37 35 34080-12080-16080-202 33 28 17 12 10 NA2-1/2 62 60 58 56 55 53100-16100-202-1/2 23 15 7 5 NA NA3 59 54 49 44 39 34120-20 3† 43 41 39 37 35 344‡ no disk 35 30 25 20 15 10ALTITUDE (FT) UNIT SIZE PIPE DIA(IN.)*NUMBER OF 90° ELBOWS1 2 3 4 5 69001 to 10,000‡040-08040-121-1/2 42 37 32 27 25 202 57 55 53 51 49 47060-08060-12060-162 45 40 38 33 31 29080-12080-16080-202 30 25 14 9 7 NA2-1/2 57 55 53 51 49 47100-16100-202-1/2 21 13 5 NA NA NA3 54 49 44 39 34 29120-20 3† 39 37 35 33 31 294‡ no disk 10 5 NA NA NA NA†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.29