Burnham Independence IN7 - Manual

Independence® Gas-Fired Boiler
BOILER
NUMBER
AGA
INPUT
MBH (1)
DOE
HEATING
CAPACITY
MBH (1)(2)
I=B=R RATING (2)
AFUE
APPROX.
SHIPPING
WEIGHT
(LBS.)
MINIMUM
RECOMMENDED
CHIMNEY SIZE
ROUND
Dia. (In.) x Ht.(Ft.)
(4)(5)
24V EI
WATER
MBH
STEAM
MBH
STEAM
SQ. FT. WATER STEAM WATER STEAM
IN3
IN4
IN5
IN6
IN7
IN8
IN9 62
105
140
175
210
245
280
51
87
115
144
173
202
231
44
76
100
125
150
176
201
38
65
86
108
130
152
174
158
271
358
450
542
633
725
81.0
81.3
81.6
81.8
82.1
81.1
81.4 80.0
80.0
80.3
80.6
80.9
80.0
80.3 83.1
83.1
83.1
83.2
83.2
83.2
83.2 81.9
82.0
82.0
82.1
82.1
82.2
82.2 350
420
485
555
620
690
760 4 x 15
5 x 15
6 x 15
6 x 15(5)
7 x 15
7 x 15(5)
8 x 15
AGA/CGA
GROSS
OUTPUT
MBH
COMBUSTION EFFICIENCY (%)
WATER STEAM
IN10(3)
IN11(3)
IN12
315
349
385 259.87
287.92
317.62 226
250
276 195
216
239 812
900
996 83.5
83.5
83.5 82.5
82.5
82.5 815
885
955 8x15(5)
9x15
9x15
* LP available on IN3-IN9
1. Ratings shown are for installations at sea level and elevations up to 2,000 ft. For elevations
above 2,000 ft., ratings should be reduced at the rate of four percent (4%) for each 1,000 ft.
above sea level.
2. Capacities, outputs and ratings are based on steam combustion efficiency of 82.5%. Water
combustion efficiency is 83.5%.
3. For Canadian builds only: Reduce input and output and by 3%.
4. 15 ft. height is measured from top of drafthood to top of chimney.
5.
IN6, IN8, & IN10 - Canada only: Increase chimney diameter by 1".
Working Pressure: 15 PSI Steam; 30 PSI Water