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2. Determine natural gas input rate by clocking gas meter.

NOTE:

Be sure all pressure tubing, vent pipes, and burner

enclosure plates are in place when checking input.

a. Obtain average yearly heat value for local gas supply.

NOTE:

Be sure heating value of gas used for calculations is

correct for your altitude. Consult local gas utility for altitude
adjustments of gas heating value.

b. Turn off all other gas appliances and pilots.

c. Start furnace and let it run for 3 minutes.

d. Measure time (in sec) for gas meter test dial to complete 1

revolution.

e. Refer to Table 6 for cu ft of gas per hr.

f. Multiply gas rate (cu ft/hr) by heating value (Btu/cu ft).

Obtain heating value from local gas utility.

EXAMPLE:
Btu heating input = Btu/cu ft X cu ft/hr
Heating value of gas = 1070 Btu/cu ft
Time for 1 revolution of 2-cu-ft dial = 72 sec
Gas rate = 100 cu ft/hr (from Table 6)
Btu heating input = 100 X 1070 = 107,000 Btuh.

g. Measured gas input must not exceed gas input on unit

rating plate.

(1.) High-altitude installations (United States only)—Gas

input on rating plate is for altitudes up to 2000 ft.
Ratings for altitudes over 2000 ft must be 4 percent
less for each 1000 ft above sea level. To obtain the
altitude adjusted rating, adjust the manifold pressure
(see item 3), and replace the main burner orifices as

Table 5—Model 58EFB Orifice Size and Manifold Pressure for Correct Input Rate

(Tabulated Data Based on Altitudes up to 2000 ft and 25,000 Btuh Per Burner)

GAS HEAT

SPECIFIC GRAVITY OF NATURAL GAS

VALUE

0.56

0.58

0.60

0.62

0.64

0.66

0.68

0.70

0.72

(Btu/cu ft)

Orf.

No.

Mnfld

Press

Orf.

No.

Mnfld

Press

Orf.

No.

Mnfld

Press

Orf.

No.

Mnfld

Press

Orf.

No.

Mnfld

Press

Orf.

No.

Mnfld

Press

Orf.

No.

Mnfld

Press

Orf.

No.

Mnfld

Press

Orf.

No.

Mnfld

Press

860

37
38

—

3.3
3.6

—

37
38

—

3.4
3.8

—

36
37

—

3.2
3.5

—

36
37

—

3.3
3.7

—

36
37

—

3.4
3.8

—

—
—

3.5

—
—

35
36

—

3.2
3.6

—

34
35
36

3.2
3.3
3.7

34
35

—

3.3
3.4

—

875

37
38
39

3.2
3.5
3.8

37
38

—

3.3
3.6

—

37
38

—

3.4
3.8

—

36
37

—

3.2
3.5

—

36
37

—

3.3
3.6

—

36
37

—

3.4
3.8

—

—
—

3.5

—
—

35
36

—

3.2
3.6

—

34
35
36

3.2
3.3
3.7

890

38
39

—

3.4
3.7

—

37
38
39

3.2
3.5
3.8

37
38

—

3.3
3.6

—

37
38

—

3.4
3.8

—

36
37

—

3.2
3.5

—

36
37

—

3.3
3.6

—

36
37

—

3.4
3.7

—

—
—

3.5

—
—

35
36

—

3.2
3.6

—

905

38
39
40

3.3
3.6
3.8

38
39

—

3.4
3.7

—

37
38
39

3.2
3.5
3.8

37
38

—

3.3
3.6

—

37
38

—

3.4
3.8

—

36
37

—

3.2
3.5

—

36
37

—

3.3
3.6

—

36
37

—

3.4
3.7

—

36
37

—

3.5
3.8

—

920

38
39
40

3.2
3.4
3.7

38
39
40

3.3
3.6
3.8

38
39

—

3.4
3.7

—

37
38
39

3.2
3.5
3.8

37
38

—

3.3
3.6

—

37
38

—

3.4
3.7

—

36
37

—

3.2
3.5

—

36
37

—

3.3
3.6

—

36
37

—

3.4
3.7

—

935

39
40
41

3.3
3.5
3.8

38
39
40

3.2
3.4
3.7

38
39
40

3.3
3.6
3.8

38
39

—

3.4
3.7

—

37
38
39

3.2
3.5
3.8

37
38

—

3.3
3.6

—

37
38

—

3.4
3.7

—

36
37
38

3.2
3.5
3.8

36
37

—

3.3
3.6

—

950

39
40
41

3.2
3.4
3.7

39
40

—

3.3
3.6

—

38
39
40

3.2
3.5
3.7

38
39
40

3.3
3.6
3.8

38
39

—

3.4
3.7

—

37
38
39

3.2
3.5
3.8

37
38

—

3.3
3.6

—

37
38

—

3.4
3.7

—

36
37
38

3.2
3.5
3.8

965

40
41

—

3.3
3.6

—

39
40
41

3.2
3.4
3.7

39
40

—

3.3
3.6

—

38
39
40

3.2
3.5
3.7

38
39
40

3.3
3.6
3.8

38
39

—

3.4
3.7

—

37
38
39

3.2
3.5
3.8

37
38

—

3.3
3.6

—

37
38

—

3.4
3.7

—

980

40
41

—

3.2
3.5

—

40
41

—

3.3
3.6

—

39
40
41

3.2
3.5
3.7

39
40

—

3.4
3.6

—

38
39
40

3.2
3.5
3.7

38
39
40

3.3
3.6
3.8

38
39

—

3.4
3.7

—

37
38
39

3.2
3.5
3.8

37
38

—

3.3
3.6

—

995

41
42

—

3.4
3.8

—

40
41

—

3.2
3.5

—

40
41

—

3.4
3.6

—

39
40
41

3.3
3.5
3.8

39
40

—

3.4
3.6

—

38
39
40

3.2
3.5
3.7

38
39
40

3.3
3.6
3.8

38
39

—

3.4
3.7

—

37
38
39

3.2
3.5
3.8

1010

41
42

—

3.3
3.7

—

41
42

—

3.4
3.8

—

40
41

—

3.3
3.5

—

39
40
41

3.2
3.4
3.6

39
40
41

3.3
3.5
3.8

39
40

—

3.4
3.6

—

38
39
40

3.2
3.5
3.7

38
39
40

3.3
3.6
3.8

38
39

—

3.4
3.7

—

1025

41
42

—

3.2
3.6

—

41
42

—

3.3
3.7

—

40
41
42

3.2
3.4
3.8

40
41

—

3.3
3.5

—

39
40
41

3.2
3.4
3.7

39
40
41

3.3
3.5
3.8

39
40

—

3.4
3.6

—

38
39
40

3.2
3.5
3.7

38
39
40

3.3
3.6
3.8

1040

—
—

3.4

—
—

41
42

—

3.2
3.6

—

41
42

—

3.3
3.7

—

40
41
42

3.2
3.4
3.8

40
41

—

3.3
3.6

—

39
40
41

3.2
3.4
3.7

39
40
41

3.3
3.5
3.8

39
40

—

3.4
3.6

—

38
39
40

3.2
3.5
3.7

1055

—
—

3.4

—
—

3.5

—
—

41
42

—

3.2
3.6

—

41
42

—

3.3
3.7

—

40
41
42

3.2
3.4
3.8

40
41

—

3.3
3.6

—

39
40
41

3.2
3.4
3.7

39
40
41

3.3
3.5
3.8

39
40

—

3.4
3.6

—

1070

—
—

3.3

—
—

3.4

—
—

3.5

—
—

41
42

—

3.2
3.6

—

41
42

—

3.4
3.7

—

40
41
42

3.2
3.5
3.8

40
41

—

3.3
3.6

—

39
40
41

3.2
3.4
3.7

39
40
41

3.3
3.5
3.8

1085

—
—

3.2

—
—

3.3

—
—

3.4

—
—

41
42

—

3.2
3.5

—

41
42

—

3.3
3.6

—

41
42

—

3.4
3.7

—

40
41
42

3.2
3.5
3.8

40
41

—

3.3
3.6

—

39
40
41

3.2
3.4
3.7

1100

—
—

3.8

—
—

3.2

—
—

3.3

—
—

3.4

—
—

41
42

—

3.2
3.5

—

41
42

—

3.3
3.6

—

41
42

—

3.4
3.7

—

40
41

—

3.2
3.5

—

40
41

—

3.3
3.6

—

Содержание 58EFB

Страница 1: ... 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 incl...

Страница 2: ...d to interface with split system cooling equipment approved by UL to provide year round air condition ing The blower is sized for both heating and cooling and the furnace control includes a cooling fan relay Before installing furnace in the United States refer to the current edition of the NFGC and the NFPA 90B For further information the NFGC and NFPA 90B are available from National Fire Protecti...

Страница 3: ...the back of the furnace Failure to follow this warning could result in a fire personal injury or death When a furnace is installed so that the supply ducts carry air to areas outside the space containing the furnace return air must also be handled by duct s sealed to furnace casing and terminating outside the space containing furnace to ensure there will not be a negative pressure condition within...

Страница 4: ...alled in an area along with 1 or more gas appliances the total Btuh input of all appliances must be included when determining the free area require ments for combustion and ventilation openings The requirements for combustion and ventilation air depend upon whether the furnace is located in a confined or unconfined space Step 2 Unconfined Space An unconfined space must have at least 50 cu ft for e...

Страница 5: ...outlet duct if not removed Remove bracket by removing No 10 screws located on bottom panel duct supply flange rotating bracket forward and lifting out The proper sizing of warm air ducts is necessary to ensure satisfactory furnace operation Duct work should be in accordance with the latest editions of U S NFPA 90A Air Conditioning Systems and NFPA 90B Warm Air Heating and Air Condition ing Systems...

Страница 6: ...t supply and return air ducts 5 Install 24 X 24 in sheet metal shield on platform in front of controls as shown in Fig 3 Step 3 Horizontal Crawlspace Installation The furnace can be installed horizontally for either left or right side supply In a crawlspace the furnace can either be hung from floor joists or installed on suitable blocks or a pad The furnace can be suspended using steel pipe straps...

Страница 7: ...e tap on gas control meets this requirement Use the proper length of pipes to avoid stress on the gas control manifold A failure to follow this warning could result in a gas leak resulting in a fire explosion personal injury or death Before any system of gas piping is finally put into service it should be carefully tested to determine if it is gas tight The piping must stand a pressure of 6 in of ...

Страница 8: ... assembly While removing burner manifold assembly disconnect violet colored rollout switch wires from rollout switch See Fig 6 5 On burner manifold assembly remove 2 screws that fasten rollout switch bracket to rollout switch base bracket See Fig 7 6 With rollout switch base bracket still attached to burner manifold assembly turn assembly over so that pilot burner is on top 7 Place rollout switch ...

Страница 9: ... this equipment Refer to rating plate or to Table 4 for equipment electrical specifications Do not connect aluminum wire between the disconnect switch and the furnace Use only copper wire Make all electrical connections in accordance with the National Electric Code ANSI NFPA 70 1996 and any local codes or ordinances that might apply For Canadian installations all electrical connections must be mad...

Страница 10: ...mostat a minimum of type T wire 63 F 35 C rise must be used 1 Electronic Air Cleaner EAC Two 1 4 in quick connect terminals marked EAC and N are provided for EAC connection See Fig 11 These terminals are energized with 115v 0 5 amp maximum during blower motor operation 2 Humidifier HUM Two 1 4 in quick connect terminals marked HUM and N are provided for 115 v humidifier connection See Fig 11 These...

Страница 11: ...TION FAN BL 4 3 L M H INDOOR BLOWER MOTOR INDUCER BLOWER C 2 1 BK WH RD BK WH RD YL BL OR BL VI VI 24V PRESS SW 24V COM 24V HOT EFT OUTPUT BR YL VI RD BK PILOT SV9500 BR BR CAP S 1 71 72 T W I N 2 C W Y G R L P ROS G Y W F1 GND R D1 HUM EAC N N CIR BLWR 4 C 3 2 X NEUTRAL 1 1 N CONT XFMR SEC UNUSED MOTOR LEADS HEAT COOL 5 4 1 2 1 2 1 2 1 2 3 2 1 Honeywell ST9120C 16 CU SEE NOTE 6 SEE NOTE 7 HORIZON...

Страница 12: ...t pipe must extend at least 3 ft above the highest point where it passes through a roof of a building and at least 2 ft higher than any portion of a building within a horizontal distance of 10 ft It shall also extend at least 5 ft above highest connected equipment flue collar NOTE The GAMA venting tables MUST be used DO NOT use Carrier s Single Stage Vent Tables for Category I Fan Assisted Furnace...

Страница 13: ...n wall thermostat calls for heat the R W circuit closes 1 Inducer start up sequence Power from transformer energizes fan control board The fan control energizes the induced draft blower motor Pressure switch P normally open contacts close to energize ignition module 2 Ignition module self check Upon being energized the igni tion module performs a 2 sec self check The ignition module checks for the...

Страница 14: ...n below 7 When main burners ignite proceed to Set Gas Input Rate section Step 5 Adjustments ADJUST PILOT FLAME Pilot assembly should be located as shown in Fig 13 Adjust pilot flame to envelop the flame sensor for a distance of 3 8 to 1 2 in See Fig 14 The adjusting screw for pilot flame is located on main gas control See Fig 15 SET GAS INPUT RATE Never set furnace input rate above that shown on r...

Страница 15: ... 38 39 3 2 3 5 3 8 37 38 3 3 3 6 37 38 3 4 3 8 36 37 3 2 3 5 36 37 3 3 3 6 36 37 3 4 3 7 36 3 5 35 36 3 2 3 6 905 38 39 40 3 3 3 6 3 8 38 39 3 4 3 7 37 38 39 3 2 3 5 3 8 37 38 3 3 3 6 37 38 3 4 3 8 36 37 3 2 3 5 36 37 3 3 3 6 36 37 3 4 3 7 36 37 3 5 3 8 920 38 39 40 3 2 3 4 3 7 38 39 40 3 3 3 6 3 8 38 39 3 4 3 7 37 38 39 3 2 3 5 3 8 37 38 3 3 3 6 37 38 3 4 3 7 36 37 3 2 3 5 36 37 3 3 3 6 36 37 3 4...

Страница 16: ...as follows a Remove manifold pipe cover and burner removal cover air inlet plate b Remove manifold retention plate c Pull manifold burner assembly out past support pins and remove assembly NOTE It is only necessary to remove 1 manifold retention plate to gain access to burners d Remove burners from assembly and change orifices as required e Reinstall assembly by reversing the procedure in items a ...

Страница 17: ...ck speed selector located at the blower motor See Table 8 Recheck the temperature rise It must be within limits specified on the unit rating plate Recommended operation is at midpoint of rise or above SET BLOWER OFF DELAY The blower off delay may be adjusted for a 60 factory setting 90 120 or 150 sec delay Set the DIP switches on the control board to obtain desired time delay See Fig 17 SET THERMO...

Страница 18: ...rn off 115 v power to furnace 2 Remove control box cover and disconnect inducer motor lead wires from control board 3 Turn on 115 v power to furnace 4 Set thermostat to call for heat When pressure switch is functioning properly ignitor should not glow If ignitor glows when inducer motor is disconnected shut down furnace immediately Determine the reason pressure switch did not function properly and...

Страница 19: ...roduct theory and skills programs is available using popular video based formats and materials All include video and or slides plus companion book Classroom Service Training plus hands on the products in our labs can mean increased confidence that really pays dividends in faster troubleshooting fewer callbacks Course descriptions and schedules are in our catalog CALL FOR FREE CATALOG 1 800 962 921...

Страница 20: ...6231 58efb1si 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 565 883 Printed in U S A Form 58EFB 1SI Pg 20 5 96 Replaces 58EFA 3SI ...

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