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Troubleshooting heating system – Bryant 580J*04--12 User Manual

Page 31

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31

Table 11 (cont.) -- Altitude Compensation* (A08--A12)

ELEVATION

ft (m)

125,000

BTUH Nominal

250,000

BTUH Nominal

180,000, 224,000

BTUH Nominal

NG Orifice

Size

LP Orifice

Size

NG Orifice

Size

LP Orifice

Size

NG Orifice

Size

LP Orifice

Size

0 --- 2000 (610)

31

1

49

3

†30

46

3

31

1

48

3

2000 (610)

32

1

50

3

†30

47

3

32

1

49

3

3000 (914)

32

1

50

3

31

1

47

3

32

1

49

3

4000 (1219)

33

1

50

3

31

1

48

3

33

1

49

3

5000 (1524)

33

1

51

4

31

1

48

3

33

1

50

3

6000 (1829)

34

1

51

4

31

1

48

3

34

1

50

3

7000 (2134)

35

1

51

4

32

1

49

3

35

1

50

3

8000 (2438)

36

1

52

4

33

1

49

3

36

1

51

4

9000 (2743)

37

2

52

4

34

1

50

3

37

2

51

4

10000 (3048)

38

2

52

4

35

1

50

3

38

2

52

4

11000 (3353)

39

2

53

4

36

1

51

4

39

2

52

4

12000 (3658)

†41

53

4

37

2

51

4

†41

53

4

13000 (3962)

†42

54

4

38

2

52

4

†42

53

4

14000 (4267)

†43

54

4

†40

53

4

†43

54

4

Table 12 – Altitude Compensation* (04--06) -- Low NO

x

Units

ELEVATION

ft (m)

60,000, 90,000

BTUH Nominal

120,000

BTUH Nominal

NG Orifice Size

LP Orifice Size

NG Orifice Size

LP Orifice Size

0 --- 2000 (610)

38

2

53

4

32

1

50

3

2000 (610)

39

2

54

4

33

1

51

4

3000 (914)

†40

54

4

34

1

51

4

4000 (1219)

†41

54

4

35

1

51

4

5000 (1524)

†41

54

4

35

1

51

4

6000 (1829)

†42

54

4

36

1

52

4

7000 (2134)

†42

54

4

36

1

52

4

8000 (2438)

†43

55

4

37

2

52

4

9000 (2743)

†43

55

4

38

2

53

4

10000 (3048)

44

2

55

4

†40

53

4

11000 (3353)

44

2

55

4

†41

53

4

12000 (3658)

45

2

†56

†42

54

4

13000 (3962)

47

3

†56

†43

54

4

14000 (4267)

48

3

†56

†43

55

4

LEGEND:
NG = Natural Gas LP = Liquid Propane

1 = CRLPELEV001A00

* As the height above sea level increases, there is less oxygen per cubic

ft. of air. Therefore, heat input rate should be reduced at higher altitudes.

2 = CRLPELEV002A00
3 = CRLPELEV003A00

{

Not included in kit. May be purchased separately through dealer.

4 = CRLPELEV004A00

Minimum heating entering air temperature
When operating on first stage heating, the minimum

temperature of air entering the dimpled heat exchanger is

50_F continuous and 45_F intermittent for standard heat

exchangers and 40_F continuous and 35_F intermittent for

stainless steel heat exchangers. To operate at lower

mixed--air temperatures, a field--supplied outdoor--air

thermostat must be used to initiate both stages of heat

when the temperature is below the minimum required

temperature to ensure full fire operation. Wire the

outdoor--air thermostat (part no. HH22AG106) in series

with the second stage gas valve as shown below. Set the

outdoor--air thermostat at 35_F for stainless steel heat

exchangers or 45_F for standard heat exchangers. This

temperature setting will bring on the second stage of heat

whenever the ambient temperature is below the thermostat

setpoint. Indoor comfort may be compromised when

heating is initiated using low entering air temperatures

with insufficient heating temperature rise.

LCTB

W2

Thermostat

TH1

TH2

W1

W1

W2

OALT

C08442

Troubleshooting Heating System

Refer to Table 13 and Table 14 for additional

troubleshooting topics.

580J