Ratings – Weil-McLain 88 User Manual
Page 35
"OILER
35
Part No. 550-100-068/1009
Ratings
Boiler
model
number
I=B=R
burner
capacity
Gross
I=B=R
output
Net I=B=R ratings
Boiler
H.P.
Combustion
efficiency
Thermal
efficiency
Net
firebox
volume
Flue
gas
volume
Positive
pressure
in firebox
Flue
outlet
diameter
Boiler
water
content
Packaged
boiler
weight
Light oil
GPH
Gas
MBH
MBH
Steam
Sq. Ft
Steam
MBH
Water
MBH
Oil
Gas
Oil
Gas
Cubic
feet
CFM
Inches
W.C.
Inches Gallons
Pounds
Notes:
1, 10
2, 3
2, 4
5, 6
8
8
8
—
—
—
—
—
—
7
9
—
—
—
488R
6.9
996
827
2,583
620
719
24.7
87.5
84.8
85.6
83.1
11.02
376
0.60
10
109
2860
488
7.0
1,010
839
2,621
629
730
25.1
87.5
84.8
85.6
83.1
11.02
370
0.60
10
109
2860
588
9.4
1,356
1,126
3,521
845
979
33.6
87.0
84.4
85.6
83.1
14.45
507
0.63
10
132
3340
688
11.8
1,701
1,413
4,469
1,072
1,229
42.2
86.7
84.1
85.6
83.1
18.08
639
0.65
10
155
3820
788
14.2
2,046
1,700
5,463
1,311
1,478
50.8
86.5
83.9
85.6
83.1
21.61
772
0.67
12
178
4345
888
16.6
2,382
1,987
6,427
1,543
1,728
59.4
86.3
83.7
85.6
83.1
25.14
906
0.69
12
201
4925
988R
17.2
2,482
2,062
6,671
1,601
1,793
61.6
86.2
83.7
85.6
83.1
28.67
1,031
0.70
14
224
5600
988
18.8
2,737
2,274
7,358
1,766
1,977
67.9
86.2
83.7
85.6
83.1
28.67
954
0.70
14
224
5600
1088R
20.0
2,887
2,399
7,763
1,863
2,086
71.7
86.2
83.6
85.6
83.1
32.20
1,184
0.71
14
247
6130
1088
21.5
3,082
2,561
8,283
1,988
2,227
76.5
86.2
83.6
85.6
83.1
32.20
1,101
0.71
14
247
6130
1188
23.5
3,428
2,848
9,213
2,211
2,477
85.1
86.1
83.5
85.7
83.1
35.76
1,299
0.72
14
270
6695
1288
26.0
3,773
3,135
10,147
2,434
2,726
93.7
86.0
83.5
85.7
83.1
39.26
1,443
0.73
14
293
7260
1388
28.5
4,119
3,422
11,071
2,657
2,976
102.2
86.0
84.4
85.7
83.1
42.79
1,588
0.74
14
316
7890
1488
31.0
4,464
3,709
12,000
2,880
3,225
110.8
86.0
83.4
85.7
83.1
46.32
1,735
0.75
16
339
8410
1588
33.0
4,809
3,996
12,925
3,102
3,475
119.4
85.9
83.3
85.7
83.1
49.85
1,854
0.76
16
362
9005
1688R
34.5
4,979
4,137
13,383
3,212
3,597
123.6
85.9
83.3
85.7
83.1
53.38
2,003
0.77
16
385
9525
1688
35.5
5,155
4,283
13,854
3,325
3,724
127.9
85.9
83.3
85.7
83.1
53.38
1,945
0.78
16
385
9525
1788
38.0
5,494
4,570
14,783
3,548
3,974
136.5
85.9
83.3
85.7
83.1
56.91
2,152
0.79
18 *
408
9780
1888
40.5
5,845
4,857
15,713
3,771
4,123
145.1
85.9
83.3
85.7
83.1
60.44
2,303
0.80
18 *
431
10775
See below to specify complete model number.
1.
Burner input based on maximum of 2,000 feet altitude. For other
2.
altitudes, consult Weil-McLain distributor/agent or sales office.
No. 2 fuel oil — Commercial Standard Spec CS75-56. Heating
3.
value of oil = 140,000 Btu per gallon.
Gas pressure required at burner gas train inlet for rated burner
4.
input; based on 1,000 Btu per cubic foot natural gas, specific
gravity of 0.60. Refer to burner manual for required pressure.
Gross I=B=R ratings have been determined under the I=B=R provision
5.
governing forced draft boiler-burner units.
Flue gas volume at outlet temperature.
6.
Net I=B=R ratings are based on net installed radiation of sufficient
7.
quantity for the requirements of the building.
Nothing need be added for normal piping and pick-up.
Water ratings are based on a piping and pick-up allowance of 1.15.
Steam ratings are based on the following allowances: 488 – 588 =
1.333; 688 = 1.323; 788 = 1.301; 888 = 1.289; 988 – 1888 = 1.288.
An additional allowance should be made for gravity hot water systems
or for unusual piping and pick-up loads.
Consult local Weil-McLain distributor/agent or sales office.
With 0.10" W.C. positive pressure at flue collar.
8.
Water boilers tested for 80 PSIG, ASME water working pressure.
9.
Steam boilers tested for 15 PSIG, ASME steam working pressure.
*
Flue collar connection is oval, 16
56 " x 19(6 "