Carrier 58BB User Manual

Carrier

Installation, Start-Up

and Service Instructions

Downflow Gas-Fired Furnaces

INTRODUCTION

The design of the 58BB,BD Downflow GasFired Furnaces is A.G.A. certified for close clear ance, “hide-a-way” installation. These units meet requirements for under-the-house warm air delivery for either concrete slab or crawl space construc

tion. See Fig. 1 and Table 1 for furnace dimensions and physical data. See Table 2 for blower data.

Table 1 — Dimensions and Physical Data

58ВВ,В

FURNACE 58 MODEL SERIES^ APPROX SHIP. WT (lb) DIMENSIONSlin.)

Width A Length B Height C

With Plenum D

Supply Air Opening E

Return Air Open Front to Vent Cl H

Front to Conn. Cl J

Vent Diom K Min Floor Opening L

Input (1000 Btuh) Bonn Cop. (1000 Btuh) T emp

Series 100,400

Rise

Series 200,500

(F)** ESP’

Series 100,400

(in.

Series 200,500

wg)

FILTERStt No.

Size (in.)

080 100 120

100^200,400,500

16У4

20У4

18Ув

"ТаУв'"

']4% ^

18%

^2%

2% ”

01::

]4%

Natural or

100

70-100

120 ^9¿-

'64

' 45-Ю0

,12|.15 [.20

:50' '

16x16x1

080 100 125 150

200,500

, J54„

16У4

56 V

^ 14%"

i'Jl

14У4

’ropane (3as

100

'so'

45-100

16x18x1

208 244

20У4 24У4

-- -28 ' ¿0*

18%

22%

18%

22%

18% "

18%

22%“

125

150

loó

18>

floor

OPENING

ESP — External Static Pressure

*Add 1-1/4 in when installed on combustible flooring with non

combustible base

fAdd 18 1/2 in. when installed with 28AE900051 cooling coil

plenum; 22 1/2 in when installed with 28AE900061 plenum (series 200 and 500 units only)

t Ratings shown for elevations up to 2000 ft For elevations above

2000 ft, deduct 4% of input capacity for each 1000 ft above sea

level

**Air temp rise may be calculated using the following formula:

At =

0 24 X specific wt of air x 60 x cfm

bonnet capacity

tf58BB units use throwaway filters; 58BD units use permanent

cleanable filters

(s) (?) Сягг!яг Piirnnratinn 1Q79

______

1 08 x cfm

bonnet capacity_____________

AIR FLOW

¡SERVICE aEARANCE

58BB,BD

NOTE; Aiiow safety ciesrance of 1 in. from sdes, top, and

type B vent; 6 in. from unlisted vent; 1 in. at rear.

Fig. 1 — Dimensions

Furnaces may be matched with certain 28 Series cooling coils to form combination heating/ cooling systems (see Table 3) and employed with humidifiers and electronic air cleaners to form complete controlled-environment systems.

. COD D D ГЛ OO I

Table 2 — Blower Data

BLOWER FURNACE 58 SERIES MOTOR

Nom Size (in.) Hp

PPD BL BMPS* ESP (in. wg)t Air Delivery (max cfm)1

BL — Belt Length BMPS — Blower Motor Pulley Setting (turns open from closed position) ESP — External Static Pressure PPD — Pulley Pitch Diameter (range 2.1 — 2 9 in )

100,400

.20

730"

080

9x8

„.30

650

BB DIRECT DRIVE

200,500 100,400

J0x8

.20

1100501020

890'

9x8

100 120

200,500 100,400

J0x8

.20

1180

.50

1080

1070

*Do not close blower motor pulley beyond setting shown fFilter in place :fWith motor set at "High" speed NOTE; Referto Application Data literature for fan performance curves.

_^0

760

9xj0

.30

920

200,500

jo>i!0

.50

.20

1250

1200

080,100

10x8

"36"

.20

980 1120

BD BELT DRIVE

200,500

12x9

^ Al

.20 .50

.50

260 1380

125 150

J2xU

^ 1

" "41 ‘

_4_

.20

1620 1800

J„„

.50

Table 3 — Furnace-Coil-Plenum Combinations

FURNACE

58BB080, 58BB100, 58BB120

58BD080, 58BD100

58BD125

58BD150

NOTE; Adapters not required.

28AF002 28AE,AF003 28AE,AF004

28AE,AF003 28AE,AF004 28AE,AF005

28AE,AF005 28AE006

COIL

PLENUM

28AE900051

28AE900061

Series 100 and 200 units are tested and approved for use with natural gas. Series 400 and 500 are factory built and approved for use with

100% propane gas. Firing of these units with any

other gas or mixture is not approved.

Furnaces are shipped fully assembled, including built-in draft diverters. Heating/cooling models are equipped with a printed circuit control center, which provides a central control connection point for furnace components and field-added acces sories. All internal electric and gas controls are factory assembled and wired.

When unpacking unit, should any in-transit damage be observed, file claim with transportation agency.

This publication covers furnace and non

combustible base installation. It also shows ter minal connections used for wiring accessories to furnace. For accessory installation details, refer to

applicable installation literature.

INSTALLATION

Location Selection

When selecting a location for the furnace,

observe the following:

1. Install furnace close to chimney and as central ized as possible with respect to distribution system.

2. Locate cooling coil (if used) downstream from furnace.

3. Ensure adequate door clearance for service access.

4. Ensure adequate ventilation. (See Combustion Air.)

5. Follow local and national utility codes.

a. Allow safety clearance of 1 in. from sides,

top and type B vent; 6 in. from unlisted

vent; 0 in. at rear.

b. Provide service clearance of 30 in. at front

of unit.

c. Downflow furnaces are not approved for

installation directly on combustible floors.

Unless furnace is set on a concrete slab floor, use of a noncombustible base is required. (See Fig. 2.) Noncombustible base

is available as an accessory package. If

furnace is combined with a cooling coil, plenum can serve as the noncombustible base.

d. If furnace is to be installed on the first floor

of a house built over a crawl space, make sure that unit and noncombustible base (if required) will rest on supported floor joists. Otherwise, vibrations could be set up, result ing in unnecessary and undesirable noises.

e. Make sure that a positive air seal is made on

all four sides of the furnace.

Fig. 2 — Installation of Noncombustible Base On

Combustible Flooring

f. If cooling coil is to be used with furnace,

provision should be made downstream of the coil to collect and drain any condensate that may blow off the coil.

^ g. Consult NFPA No. 54; Installation of Gas

Appliances Gas Piping 1969.

Installation Procedures

Install ductwork, filters, and vents; complete

external piping and wiring; and provide for com

bustion and recirculating air.

Fig. 3 - Installation of Filters in Return Air Duct

DUCTWORK RECOMMENDATIONS

1. Install locking-type dampers in all branch or individual ducts to balance out system.

2. Use tapered fittings or starter collars between ducts and plenum.

3. Use flexible duct connection (asbestos cloth)

between furnace and discharge plenum.

4. Install acoustical insulation in warm air plenum;

install sound traps in short run ducts.

5. Run return air connections under floor or I'un full size return from space outside enclosed

area. If outdoor air is used, combination of

outdoor and return air requires duct design and diverting dampers so installed that volume of

circulating air entering furnace cannot be re

duced or restricted below that which would normally enter thru circulating air intake of

furnace

Table 4 — Pipe Sizing*, Capacity For Natural Gas,

Cu Ft/Hr

PIPE SIZE

132 92 73 63 56 50

’4

U/4

*Based on pressure drop of 0 3 in. wg, 0 6 sp gr gas fWithout elbows

NOTE: For pipe sizing capacity for LP gases, refer to NFPA No. 54

278 520

1050 730 590

X — J

PIPE

LENGTH (ft)t

20 30 40

190

152 130

350 285 245

500

___

115 105 96 90 215 195 180 170 440 400 370

_-,J

vent outlet terminates in an approved cap with

a venting capacity not less than that of the

vent. (See Table 1 for vent sizes.)

350

FILTERS — Filters are shipped from factory in blower compartment of furnace. (See Fig. 3.) To gain access, remove top front panel and filter

compartment doors located at right- and left-hand sides of vent. Install by raising filters above rightand left-hand side of blower and positioning on

filter rack as shown in Fig. 3. As an aid in filter removal, an access panel could be field fabricated in the front of the return air supply plenum.

VENTS — Vent furnace to permanent chimney or thru roof with vent of approved design. (Type B vent is recommended.) Observe local ordinances.

1. Size flue pipe connections same as furnace vent connection. (See Fig. 1 and Table 1.)

2. Run pipe as directly as possible with minimum number of turns.

3. Maintain minimum pitch of 1/4 in. per linear ft on horizontal runs. Pitch should not exceed 75% of vertical vent.

4. Maintain minimum angle of 60 degrees from vertical for vent pipe crossovers in attic.

5. Rigidly support pipe with hangers or straps.

6. Do not connect into a chimney serving an

open fireplace.

7. If chimney is used, total equivalent straight

length of flue piping between furnace and flue pipe connection at chimney must not be greater than 75% of vertical height of chimney above flue pipe connection.

8. Install flue pipe to extend thru chimney wall but not beyond inside wall of flue.

9. Minimum vertical stack height is 5 ft. Extend flue pipe at least 3 ft above roof and 2 ft above any object within a 15-ft radius. Ensure that

10. Insulate flue pipe where it passes near com bustible material. Underwriter’s Laboratories

(UL) require that uninsulated flue pipe be installed with a minimum clearance of 6 in. from combustible materials. Vent piping,

which meets with National Board of Fire Underwriter’s Specifications for type B vents, may be installed with a clearance of 1 in. from

combustible materials.

If other gas appliances are vented into

common flue, flue area must equal largest vent area

plus one-half total areas of other vent conneetors.

GAS PIPING — Install piping per national and local

codes, and NFPA No. 54.

1. Furnish gas line from main gas supply to

furnace.

2. Size supply pipe per volume of gas used and allowable pressure drop. (See Table 4.) Supply

pipe size must at least equal that of furnace gas connection.

■ 3. Refer to NFPA No. 54 for additional suggested

methods of piping.

a. Install drop pipe adjacent to, but not in

front of furnace.

b. Install manual shutoff valve on gas piping

per local codes.

c. Install tee in pipe at same elevation as gas

inlet connection to unit; provide ground

joint union between tee and furnace

controls. d. Extend drip leg and cap it. e. Test for pressure and leaks.

CAUTION: Never rise open flame for testjxig.

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