Installation Guide

Part number 550-100-066/0608
g a s -f i r e d w at e r b o i l e r — Boiler Manual
106
Ratings — multiple Ultra boilers
 Ratings and engineering data (see Figure 116 for notes)
DOE
Boilers in system
Model Ultra –
Total
CSA
input
DOE
Heating
capacity
Boiler
H.P.
Net
water
ratings
Manifolded
combustion
air duct
size
Foundation size
Side-to-side
arrangement
(height 2” to 4”)
Back-to-back
arrangement
(height 2” to 4”)
Input,
MBH
Output,
MBH
- MBH
Square
inches
Length
(inches)
Length
(inches)
Length
(inches)
Length
(inches)
80 105 155 230 310
- Note 1 - Note 2
Figure 31, page 30
Note 3
2 160 142 4.2 123 80
56 23 27 48
2 210 188 5.6 163 105
2 310 278 8.3 242 155
2 460 414 12.4 360 230
2 620 578 17.3 503 310
3 240 213 6.4 185 120
85 23 56 48
3 315 282 8.4 245 157
3 465 417 12.5 363 232
3 690 621 18.6 540 345
3 930 867 25.9 754 465
4 320 284 8.5 247 160
114 24 56 49
4 420 376 11.2 327 210
4 620 556 16.6 483 310
4 920 828 24.7 720 460
4 1240 1156 34.5 1005 320
5 400 355 10.6 309 200
143 24 85 49
5 525 470 14.0 409 267
5 775 695 20.8 604 387
5 1150 1035 30.9 900 575
5 1550 1445 43.2 1257 775
6 480 426 12.7 370 240
172 24 85 49
6 630 564 16.8 490 315
6 930 834 24.9 725 465
6 1380 1242 37.1 1080 690
6 1860 1734 51.8 1508 930
7 560 497 14.8 432 280
201 24 114 49
7 735 658 19.7 572 367
7 1085 973 29.1 846 542
7 1610 1449 43.3 1260 805
7 2170 2023 60.4 1759 585
8 640 568 17.0 494 320
230 24 114 49
8 840 752 22.5 654 420
8 1240 1112 33.2 967 620
8 1840 1656 49.5 1440 920
8 2480 2312 69.1 2010 1240