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Table 4 – HEATING RATING TABLE -- NATURAL GAS & PROPANE
Units Gas Heat
AL/SS HEAT EXCHANGER
TEMP RISE
(DEG F)
THERMAL
EFFICIENCY
(%)
AFUE
(%)
INPUT / OUTPUT
STAGE 1 (MBH)
INPUT / OUTPUT
STAGE 2 (MBH)
Single Phase
04
LOW --- 72 / 59 25 --- 55 82% 81%
MED --- 115 / 93 55 --- 85 80% 80%
HIGH --- --- --- --- ---
05
LOW --- 72 / 59 25 --- 55 82% 81%
MED --- 115 / 93 35 --- 65 81% 80%
HIGH --- 150 / 120 50 --- 80 80% 80%
06
LOW --- 72 / 59 20 --- 55 82% 81%
MED --- 115 / 93 30 --- 65 81% 80%
HIGH --- 150 / 120 40 --- 80 80% 80%
Three Phase
04
LOW --- 72 / 59 25 --- 55 82% N/A
MED 82 / 66 115 / 93 55 --- 85 80% N/A
HIGH --- --- --- --- ---
05
LOW --- 72 / 59 25 --- 55 82% N/A
MED --- 115 / 93 35 --- 65 81% N/A
HIGH 120 / 96 150 / 120 50 --- 80 80% N/A
06
LOW --- 72 / 59 20 --- 55 82% N/A
MED --- 115 / 93 30 --- 65 81% N/A
HIGH 120 / 96 150 / 120 40 --- 80 80% N/A
07
LOW --- 72 / 59 15 --- 55 82% N/A
MED --- 115 / 93 25 --- 65 81% N/A
HIGH 120 / 96 150 / 120 35 --- 80 80% N/A
08
LOW --- 125 / 103 20 --- 50 82% N/A
MED 120 / 98 180 / 148 35 --- 65 82% N/A
HIGH 180 / 147 224 / 184 45 --- 75 82% N/A
09
LOW --- 125 / 103 20 --- 50 82% N/A
MED 120 / 98 180 / 148 30 --- 65 82% N/A
HIGH 180 / 147 224 / 184 40 --- 75 82% N/A
12
LOW 120 / 98 180 / 148 25 --- 65 82% N/A
MED 180 / 147 224 / 184 30 --- 65 82% N/A
HIGH 200 / 160 250 / 205 35 --- 70 80% N/A
14
LOW 120 / 98 180 / 148 20 --- 65 82% N/A
MED 180 / 147 224 / 184 25 --- 65 82% N/A
HIGH 200 / 160 250 / 205 25 --- 70 80% N/A
NOTES:
Heat ratings are fo r natural g as heat exchangers operated at or below 2000 ft (610 m). For in formation on propane or alti-
tudes above 2000 ft (610 m), see the Application Data section o f this bo o k. Accessory Propane/High Altitude kits are also
available.
In the USA the input rating for altitudes a bove 2000 ft (610m) must b e derated by 4% fo r each 1000 ft (305 m) above s ea
level. In Canada, t he input rating must be derated by 10% for altitudes of 2000 ft (610 m) to 4500 ft (1372 m) above sea level.
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