Install Instructions

Figure 122 Ratings and engineering data — multiple Evergreen
®
boilers
Ratings — Multiple Evergreen
®
boilers
Part number 550-100-191/0917
140
®
gas-fired water boiler — 70/110/155 Boiler Manual
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 four
circulators, not exceeding 2.2 amps per
circulator.
4
Operating weight is the total weight of the
boiler, including water.
5
EVG 70 vent/air pipes can be either 2" or 3"
pipe.
EVG 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 123, page 139 for details.
All EVG 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 the Advanced
Manual for manifolded air piping.
Boilers in
system
Model EVG
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
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
EVG
Shipping
weight
Operating
weight
Water
content
Water fl ow
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
125 112 2.54 6.5 3.3 2" or 3" 15.0
110
120 107 2.54 10.0 5.0 3" 15.0
155
142 129 3.22 14.3 7.2 3" 15.0