Figure 133
Ratings and engineering data — multiple
ECO Series 2
boilers
Ratings — Multiple ECO Series 2 boilers
Part number 550-142-190/1218
128
Notes
1
Based on standard test procedures outlined by
DOE for individual boilers.
2
Net AHRI ratings are based on piping and
pickup allowance of 1.15.
Consult Weil-McLain Technical Services for
other allowances.
3
Total amp requirement includes up to three
circulators, not exceeding 2.2 amps per
circulator.
4
Operating weight is the total weight of the
boiler, including water.
5
ECO
70 vent/air pipes can be either 2" or 3"
pipe.
ECO
110 and 155 vent/air pipes must be 3".
All of the boilers will automatically de-rate
as vent/air pipe length increases, due to
the pressure loss through the piping. See
Figure 131, page 126 for details.
All
ECO
installations require a separate
vent pipe and termination for each boiler.
Vent piping cannot be manifolded
. Install
and terminate vents as described in vent/air
installation instructions in this manual.
Combustion air piping can be individually
piped or manifolded. See Figure 60, page 54,
for manifolded air piping.
Boilers in
system
Model
ECO
Total
Input
Output /
Heating
capacity
Boiler
H.P.
Net water
ratings
Manifolded
combustion
air duct
size
Input,
MBH
Output,
MBH
-
MBH
Square
inches
70
110 155
-
Note 1
-
Note 2
Figure 60, page 54
2
140
130
3.9
114
70
2
220
202
6.0
176
110
2
310
286
8.5
248
155
3
210
195
5.8
171
105
3
330
303
9.1
264
165
3
465
429
12.8
372
233
4
280
260
7.8
228
140
4
440
404
12.1
352
220
4
620
572
17.1
496
310
5
350
325
9.7
285
175
5
550
505
15.1
440
275
5
775
715
21.4
620
388
6
420
390
11.7
342
210
6
660
606
18.1
528
330
6
930
858
25.6
744
465
7
490
455
13.6
399
245
7
770
707
21.1
616
385
7
1085
1001
29.9
868
543
8
560
520
15.5
456
280
8
880
808
24.1
704
440
8
1240
1144
34.2
992
620
Boiler
Model
ECO
Shipping
weight
Operating
weight
Water
content
?@
rate
per boiler
Vent/air pipe
size:
(Provide a
separate
vent for each
boiler)
Electrical
service
required
Pounds
per boiler
Pounds
per boiler
Gallons
per boiler
GPM
@ 20°F
rise
GPM
@ 40°F
rise
Amps
per boiler
Note 4
Note 5
Note 3
70
112
105
2.54
6.5
3.3
2" or 3"
15.0
110
109
94
2.54
10.0
5.0
3"
15.0
155
125
120
3.22
14.3
7.2
3"
15.0
®
S
ERIES
2
G
AS
-
FIRED
WATER
BOILER
—
Boiler Manual