Install Instructions

&IGURE Ratings and engineering data — multiple ECO boilers
Boilers in
SYSTEM
Model %#/
Total
)NPUT
/UTPUT
(EATING
CAPACITY
Boiler
(0
Net water
RATINGS
-ANIFOLDED
COMBUSTION
AIRDUCT
SIZE
Input,
MBH
Output,
MBH
- MBH
Square
inches
70 110 155
- Note 1 - Note 2 Figure 54, page 50
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
%#/
3HIPPING
WEIGHT
/PERATING
WEIGHT
Water
CONTENT
7ATERmOWRATE
PERBOILER
6ENTAIRPIPE
SIZE
(Provide a
separate
vent for each
boiler)
%LECTRICAL
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
117 110
2.54 6.5 3.3 2” or 3” 15.0
110
117 110
2.54 10.0 5.0 2” or 3” 15.0
155
130 125
3.22 14.3 7.2 3” 15.0
Ratings — Multiple ECO boilers
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 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.
6ENT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 54, page 50,
for manifolded air piping.
Part number 550-142-122/0513
120
TM
GAS-FIRED WATER BOILER — Boiler Manual