Ratings - Multiple Eco Boilers - Weil-McLain ECO 70 Manual

TM -
G
AS FIRED WATER BOILER
Ratings — Multiple ECO boilers
Ratings and engineering data — multiple ECO boilers
Boilers in Total
Model
Input,
MBH
70 110 155 -
2 140
2 220
2 310
3 210
3 330
3 465
4 280
4 440
4 620
5 350
5 550
5 775
6 420
6 660
6 930
7 490
7 770
7 1085
8 560
8 880
8 1240
Boiler
Model
Pounds
Pounds
per boiler
per boiler
Note 4
70
117 110
110
117 110
155
130 125
120
— Boiler Manual
Boiler Net water
Output,
- MBH
MBH
Note 1 - Note 2
130 3.9 114
202 6.0 176
286 8.5 248
195 5.8 171
303 9.1 264
429 12.8 372
260 7.8 228
404 12.1 352
572 17.1 496
325 9.7 285
505 15.1 440
715 21.4 620
390 11.7 342
606 18.1 528
858 25.6 744
455 13.6 399
707 21.1 616
1001 29.9 868
520 15.5 456
808 24.1 704
1144 34.2 992
Water
(Provide a
separate
vent for each
GPM GPM
Gallons
boiler)
@ 20°F @ 40°F
per boiler
rise rise
Note 5
2.54 6.5 3.3 2" or 3"
2.54 10.0 5.0 2" or 3"
3.22 14.3 7.2
1
Square
inches
Figure 54, page 50
70
2
110
155
105
165
3
233
140
220
4
310
175
275
388
210
330
465
245
385
5
543
280
440
620
Amps
per boiler
Note 3
15.0
15.0
3" 15.0
Notes
Based on standard test procedures outlined by
DOE for individual boilers.
Net AHRI ratings are based on piping and
pickup allowance of 1.15.
Consult Weil-McLain Technical Services for
other allowances.
Total amp requirement includes up to three
circulators, not exceeding 2.2 amps per
circulator.
Operating weight is the total weight of the
boiler, including water.
ECO 70 or 110 vent/air pipes can be either 2"
or 3" pipe.
ECO 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 122, page 119 for details.
All ECO installations require a separate
vent pipe and termination for each boiler.
and terminate vents as described in vent/air
installation instructions in this manual.
Combustion air piping can be individually
piped or manifolded. See Figure 54, page 50,
for manifolded air piping.
Part number 550-142-122/0513
. Install