Bryant 581B036--072 Installation Instructions Manual page 10

UNIT SIZE 581B
FURNACE SECTION
Rollout Switch Cutout Temp (F)†
Burner Orifice Diameter (in. ...drill size)**
Natural Gas —Std
Propane —Alt††
Thermostat Heat Anticipator Setting (amps)
208/230/460 v
First Stage
Second Stage
Gas Input (Btuh)
First Stage/Second Stage (3 ---phase units)
Efficiency (Steady State) (%)
Temperature Rise Range
Manifold Pressure (in. wg)
Natural Gas —Std
Propane —Alt††
Maximum Static Pressure (in. wg)
Field Gas Connection Size (in.)
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief
Cutout
Reset (Auto.)
LOSS-OF-CHARGE SWITCH/LOW-PRESSURE
(Liquid Line) (psig)
Cutout
Reset (Auto.)
FREEZE PROTECTION THERMOSTAT
Opens (F)
Closes (F)
OUTDOOR-AIR INLET SCREENS
RETURN-AIR FILTERS
Quantity...Size (in.)
LEGEND
Bhp — Brake Horsepower
**60,000 and 72,000 Btuh heat input units have 2 burners. 90,000 and 120,000 Btuh
heat input units have 3 burners. 115,000 Btuh heat input units and 150,000 Btuh
Heat input units have 3 burners.
††A propane kit is available as an accessory. Kit may be used at elevations as high as
2000 ft. If a propane kit is used with Low NOx units, the Low NOx baffle must be
removed and the units will no longer be classified as Low NOx units.
ll Three-phase standard models have heating inputs as shown. Single-phase stan-
dard models have one-stage heating with heating input values.
***California compliant three-phase models.
†††California SCAQMD compliant low NO
controlled to 40 nanograms per joule or less.
Table 1 — Physical Data 581B (cont)
071/072
114/115
149/150
060N
090N
120N
071/072
114115
149/150
060N
090N
120N
072
115
150
071II
114II
149II
060N***
090N***
120N***
072
115
150
071
114
149
060N
090N
120N
072
115
150
071
114
149
060N
090N
120N
models have combustion products that are
x
036 048
195 195
.113...33 .113...33
.113...33 .113...33
— .129...30
.102...38 .102...38
.102...38 .102...38
— .116...32
.089...43 .089...43
.089...43 .089...43
— .102...38
.082...45 .082...45
.082...45 .082...45
— .094...42
.14 .14
.14 .14
50,000/ 72,000 50,000/ 72,000
82,000/115,000 82,000/115,000
— 120,000/150,000
—/72,000 —/72,000
—/115,000 —/115,000
— —/150,000
—/ 60,000 —/60,000
—/ 90,000 —/90,000
— —/120,000
82 82
80 81
— 80
82 82
80 81
— 80
80 80
80 80
— 80
15 ---45 15 ---45
55 ---85 35 ---65
— 50 ---80
15 ---45 15 ---45
55 ---85 35 ---65
— 50 ---80
20 ---50 20 ---50
30 ---60 30 ---60
— 40 ---70
3.5 3.5
3.5 3.5
1.0 1.0
1/2 1/2
Cleanable. Screen quantity and size varies with option selected.
2...16 x 25 x 2
10
060
195
.113...33
.113...33
.129...30
.102...38
.102...38
.116...32
.089...43
.089...43
.102...38
.082...45
.082...45
.094...42
.14
.14
50,000/ 72,000 50,000/ 72,000
82,000/115,000 82,000/115,000
120,000/150,000 120,000/150,000
—/72,000
—/115,000
—/150,000
—/60,000
—/90,000
—/120,000
82
81
80
82
81
80
80
80
80
15 ---45
35 ---65
50 ---80
15 ---45
35 ---65
50 ---80
20 ---50
30 ---60
40 ---70
3.5
3.5
1.0
1/2
450 ± 50
428
320
7 ± 3
22 ± 5
30 ± 5
45 ± 5
Throwaway
072
195
.113...33
.113...33
.129...30
—
—
—
.089...43
.089...43
.104...39
—
—
—
.14
.14
—
—
—
—
—
—
82
81
80
—
—
—
—
—
—
15 ---45
35 ---65
50 ---80
—
—
—
—
—
—
3.5
3.5
1.0
1/2
4...16 x 16 x 2