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58DFA

Downflow Induced-Combustion Furnaces

Installation, Start-Up, and Operating Instructions

Sizes 071-135 Series 120

NOTE: Read the entire instruction manual before starting the

installation.

Index Page

SAFETY CONSIDERATIONS.....................................................1

Clearance From Combustible Materials...................................1

INTRODUCTION.......................................................................1-2

Dimensional Drawing...............................................................2

LOCATION....................................................................................3

General ......................................................................................3

Location Relative To Cooling Equipment...............................3

Hazardous Locations.................................................................3

AIR FOR COMBUSTION AND VENTILATION...................3-5

Unconfined Space..................................................................3-4

Confined Space......................................................................4-5

SUPPLY-AIR PLENUM INSTALLATION..............................5-6

Concrete Slab............................................................................5

Combustible Floor ..................................................................5

FILTER ARRANGEMENT...........................................................6

GAS PIPING..................................................................................6

ELECTRICAL CONNECTIONS...............................................6-7

115-v Wiring..........................................................................6-7

24-v Wiring .............................................................................7

Accessory ..................................................................................7

VENTING ......................................................................................7

START-UP, ADJUSTMENT, AND SAFETY CHECK ..............7

General ......................................................................................7

Sequence Of Operation .......................................................7-10

Heating Mode............................................................................8

Cooling Mode......................................................................8-10

Continuous Blower Mode.......................................................10

Start-Up Procedures................................................................10

Adjustments .......................................................................10-12

Check Safety Controls.......................................................12-13

Checklist ................................................................................13

SAFETY CONSIDERATIONS

Installing and servicing heating equipment can be hazardous due to

gas and electrical components. Only trained and qualified person-

nel should install, repair, or service heating equipment.

Untrained personnel can perform basic maintenance functions

such as cleaning and replacing air filters. All other operations must

be performed by trained service personnel. When working on

heating equipment, observe precautions in the literature, on tags,

and on labels attached to or shipped with the unit, and other safety

precautions that may apply.

Follow all safety codes. In the United States, follow all safety

codes including the National Fuel Gas Code NFPA No. 54-

1992/ANSI Z223.1-1992 (NFGC). In Canada, refer to the current

edition of the National Standard of Canada CAN/CGA-B149.1-

and .2-M91 Natural Gas and Propane Gas Installation Codes

(NSCNGPIC). Wear safety glasses and work gloves. Have fire

extinguisher available during start-up and adjustment procedures

and service calls.

Understand the signal word DANGER, WARNING, or CAU-

TION. These words are used with the safety-alert symbol. DAN-

GER identifies the most serious hazards which will result in severe

personal injury or death. WARNING signifies hazards that could

result in personal injury or death. CAUTION is used to identify

unsafe practices which would result in minor personal injury or

product and property damage.

NOTE is used to highlight suggestions that will result in enhanced

installation, reliability, or operation.

These instructions cover minimum requirements and conform to

existing national standards and safety codes. In some instances,

these instructions exceed certain local codes and ordinances,

especially those that may not have kept up with changing residen-

tial construction practices. We require these instructions as a

minimum for a safe installation.

Table 1—Clearances From Combustible

Materials (In.)

UNIT SIZE 071 091-135

Sides Single-Wall Vent 1 0

Type B-1 Double-Wall Vent 0 0

Back 0 0

Top 1 1

Front Single-Wall Vent 6* 6*

Type B-1 Double-Wall Vent 3 3

Vent Single-Wall Vent 6 6

Type B-1 Double-Wall Vent 1 1

NOTES:

1. Provide 30-in. front clearance for servicing. An open door in front of the

furnace can meet this requirement.

2. A minimum clearance of 3 in. must be provided in front of the furnace for

combustion air and proper operation.

INTRODUCTION

The model 58DFA Series 120 Continuous-Pilot Furnaces are

available in sizes 71,000 through 135,000 Btuh input capacities.

ama

CANADIAN GAS ASSOCIATION

A PPRO VED

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1 4

Tab 6a 8a

PC 101 Catalog No. 565-812 Printed in U.S.A. Form 58DF-9SI Pg 1 11-93 Replaces: 58DF-6SI

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1 2 3 4 5 6 ... 13 14

Résumé du contenu

Page 1 - Sizes 071-135 Series 120

58DFADownflow Induced-Combustion FurnacesInstallation, Start-Up, and Operating InstructionsSizes 071-135 Series 120NOTE: Read the entire instruction m

Page 2 - Table 2—Dimensions (In.)

The EAC terminals are energized with 115v when the bloweris operating on either heating or cooling speed.3. Continuous blower modeWhen the R-G circuit

Page 3

3.8-in. wc for natural gas. Make any major adjust-ments by changing main burner orifices.(3.) When correct input is obtained, replace regulator sealca

Page 4 - (Outside Air)

a. Place duct thermometers in return and supply ducts as nearfurnace as possible. Be sure thermometers do not "see" heatexchangers so that r

Page 5 - HOLE IN

c. Tighten thermocouple connection 1/4 turn with wrench.d. Relight pilot by following the lighting instructions on thefurnace.2. Check primary limit c

Page 6 - Fig. 7—Filter Positions

Page 7 - Fig. 9—Control Center

This furnace must be installed in the downflow configurationONLY. Improper installation, adjustment, alteration, service,maintenance, or use can cause

Page 8 - Table 5—Electrical Data

Step 1—LocationGENERALDo not install furnace in a corrosive or contaminated atmo-sphere. Make sure all combustion and circulating air require-ments ar

Page 9 - Fig. 11—Unit Wiring Diagram

For Example:58DFA FURNACEINPUT BTUHMINIMUM SQ FTWITH 7-1/2 FTCEILING66,000 44088,000 587110,000 734132,000 880If the unconfined space is of unusually

Page 10

For Example:58DFA FURNACE IN-PUT BTUHFREE AREA PEROPENING (SQ IN.)ROUND PIPE (IN.DIA)66,000 16.5 588,000 22.0 6110,000 27.5 6132,000 33.0 7b. If combu

Page 11

DO NOT INSTALL THE FURNACE ON ITS BACK ORSIDES; safety control operation will be adversely affected.Never connect return-air ducts to the sides or bac

Page 12 - MANIFOLD

Do not connect aluminum wire between disconnect switchand furnace. Use only copper wire.The cabinet MUST have an uninterrupted or unbroken groundaccor

Page 13 - 10 TURNS AROUND JAWS

1. Heating modea. When the wall thermostat "calls for heat," the R-W circuitcloses. This closed circuit supplies power to the 24-v safetycir

Page 14 - Tab 6a 8a

Fig. 11—Unit Wiring DiagramA92176FU1IDRPL1-3PR-1PR-2SEC-1SEC-2TRAN24VAC115VACBLWMLOMED LOMED HIHICOMCAPL2COM4321CCFRHFRPL4NOTE#4NOTE#8EAC-1EAC-2L1ILKE

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Carrier 58DFA Instructions d'exploitation

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