Bryant 581C024--060 - Manual (Page 10)

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Table 1 — Physical Data 581B (cont)
UNIT SIZE 581B 036 048 060 072
FURNACE SECTION
Rollout Switch Cutout Temp (F)† 195 195 195 195
Burner Orifice Diameter (in. ...drill size)**
Natural Gas —Std 071/072 .113...33 .113...33 .113...33 .113...33
114/115 .113...33 .113...33 .113...33 .113...33
149/150 — .129...30 .129...30 .129...30
060N .102...38 .102...38 .102...38 —
090N .102...38 .102...38 .102...38 —
120N — .116...32 .116...32 —
Propane —Alt†† 071/072 .089...43 .089...43 .089...43 .089...43
114115 .089...43 .089...43 .089...43 .089...43
149/150 — .102...38 .102...38 .104...39
060N .082...45 .082...45 .082...45 —
090N .082...45 .082...45 .082...45 —
120N — .094...42 .094...42 —
Thermostat Heat Anticipator Setting (amps)
208/230/460 v
First Stage .14 .14 .14 .14
Second Stage .14 .14 .14 .14
Gas Input (Btuh)
First Stage/Second Stage (3---phase units) 072 50,000/ 72,000 50,000/ 72,000 50,000/ 72,000 50,000/ 72,000
115 82,000/115,000 82,000/115,000 82,000/115,000 82,000/115,000
150 — 120,000/150,000 120,000/150,000 120,000/150,000
071II —/72,000 —/72,000 —/72,000 —
114II —/115,000 —/115,000 —/115,000 —
149II — —/150,000 —/150,000 —
060N*** —/ 60,000 —/60,000 —/60,000 —
090N*** —/ 90,000 —/90,000 —/90,000 —
120N*** — —/120,000 —/120,000 —
Efficiency (Steady State) (%) 072 82 82 82 82
115 80 81 81 81
150 — 80 80 80
071 82 82 82 —
114 80 81 81 —
149 — 80 80 —
060N 80 80 80 —
090N 80 80 80 —
120N — 80 80 —
Temperature Rise Range 072 15---45 15---45 15---45 15---45
115 55---85 35---65 35---65 35---65
150 — 50---80 50---80 50---80
071 15---45 15---45 15---45 —
114 55---85 35---65 35---65 —
149 — 50---80 50---80 —
060N 20---50 20---50 20---50 —
090N 30---60 30---60 30---60 —
120N — 40---70 40---70 —
Manifold Pressure (in. wg)
Natural Gas —Std 3.5 3.5 3.5 3.5
Propane —Alt†† 3.5 3.5 3.5 3.5
Maximum Static Pressure (in. wg) 1.0 1.0 1.0 1.0
Field Gas Connection Size (in.) 1/2 1/2 1/2 1/2
HIGH-PRESSURE SWITCH (psig)
Standard Compressor Internal Relief 450 ± 50
Cutout 428
Reset (Auto.) 320
LOSS-OF-CHARGE SWITCH/LOW-PRESSURE
(Liquid Line) (psig)
Cutout 7 ± 3
Reset (Auto.) 22 ± 5
FREEZE PROTECTION THERMOSTAT
Opens (F) 30 ± 5
Closes (F) 45 ± 5
OUTDOOR-AIR INLET SCREENS Cleanable. Screen quantity and size varies with option selected.
RETURN-AIR FILTERS Throwaway
Quantity...Size (in.) 2...16 x 25 x 2 4...16 x 16 x 2
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
x
models have combustion products that are
controlled to 40 nanograms per joule or less.
581B
,C