Heating Rating Table - Bryant PREFERRED 581J Product Data

TABLE 4 – HEATING RATING TABLE - - NATURAL GAS & PROPANE
Units Gas Heat
LOW
MED
04
HIGH
LOW
MED
05
HIGH
LOW
MED
06
HIGH
LOW
04 MED
HIGH
LOW
05 MED
HIGH
LOW
MED
06
HIGH
LOW
MED
07
HIGH
LOW
MED
08
HIGH
LOW
MED
09
HIGH
NOTES:
Heat ratings are for natural gas heat exchangers operated at or below 2000 ft (610 m). For information on Propane or alti-
tudes above 2000 ft (610 m), see the Application Data section of this book. Accessory Propane/High Altitude kits are also
available.
In the USA the input rating for altitudes above 2000 ft (610m) must be derated by 4% for each 1000 ft (305 m) above sea
level. In Canada, the input rating must be derated by 10% for altitudes of 2000 ft (610 m) to 4500 ft (1372 m) above sea level.
AL/SS HEAT EXCHANGER
INPUT / OUTPUT INPUT / OUTPUT
STAGE 1 (MBH) STAGE 2 (MBH)
50 / 41
82 / 66
---
50 / 41
82 / 66
120 / 96
50 / 41
82 / 66
120 / 96
50 / 41
82 / 66
---
50 / 41
82 / 66
120 / 96
50 / 41
82 / 66
120 / 96
50 / 41
90 / 73
105 / 84
90 / 73
120 / 98
180 / 147
90 / 73
120 / 98
180 / 147
TEMP RISE
(DEG F)
72 / 59 25 --- 55
115 / 93 55 --- 85
--- ---
72 / 59 25 --- 55
115 / 93 35 --- 65
150 / 120 50 --- 80
72 / 59 20 --- 55
115 / 93 30 --- 65
150 / 120 40 --- 80
72 / 59 25 --- 55
115 / 93 55 --- 85
--- ---
72 / 59 25 --- 55
115 / 93 35 --- 65
150 / 120 50 --- 80
72 / 59 20 --- 55
115 / 93 30 --- 65
150 / 120 40 --- 80
72 / 59 15 --- 55
125 / 103 20 --- 50
150 / 120 30 --- 60
125 / 103 20 --- 50
180 / 148 35 --- 65
224 / 184 45 --- 75
125 / 103 20 --- 50
180 / 148 30 --- 65
224 / 184 40 --- 75
9
THERMAL
AFUE
EFFICIENCY
(%)
(%)
82% 81%
80% 80%
--- ---
82% 81%
81% 80%
80% 80%
82% 81%
81% 80%
80% 80%
82% N/A
80% N/A
--- ---
82% N/A
81% N/A
80% N/A
82% N/A
81% N/A
80% N/A
82% N/A
82% N/A
81% N/A
82% N/A
82% N/A
82% N/A
82% N/A
82% N/A
82% N/A