Installation & Operation Manual
20
First Hour Rating - 180°F Boiler Loop Water
(Knight Boiler - Models SIT040DW - SIT050DW)
Model
SIT040DW
SIT050DW
SIT065DW
Circulator Flow GPM
5
8
12
16
20
25
30
5
8
12
16
20
25
30
5
8
12
16
20
25
30
Domestic Outlet
115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140
52,500 WH/KH55
141 110 152 118
153 122 164 130
226 178
76,000
KB81
164 126 175 135 186 142 199 151 203 154
176 138 187 147 198 154 211 163 215 166
285 220 301 231 302 232
80,750
WH85
214 162
226 174
305 234 317 242
99,750
KB106
216 163 236 178
228 175 248 190
339 258 371 281 376 284
104,500 WH110
379 287 392 296
142,500
KB151
421 317 454 340
MAX BTU INPUT
47,144
57,327 62,606 67,133 73,108 81,841 89,761 47,144 57,327 62,606 67,133 73,108 81,841 89,761 70,904 77,315 87,876 98,059 100,699 113,899 124,459
Boiler Output Capacity
Table 8B First Hour Rating - 180°F Boiler Loop Water (Knight Boiler)
8
Performance data
First Hour Rating - 180°F Boiler Loop Water
(Knight Boiler - Models SIT080DW - SIT119DW)
Model
SIT080DW
SIT119DW
Circulator Flow GPM
5
8
12
16
20
25
30
5
8
12
16
20
25
30
Domestic Outlet
115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140 115 140
52,500 WH/KH55
243 195
271 223
76,000
KB81
302 237 318 248
330 265 346 276 347 277
80,750
WH85
322 251 334 259
362 287 362 287
99,750
KB106
356 275 388 298 393 301
416 326 421 329 422 330
104,500 WH110
396 304 409 313
424 332 437 341 436 340
142,500
KB151
438 334 471 357
466 362 499 385
MAX BTU INPUT
70,904
77,315
87,876
98,059
100,699
113,899
124,459
70,904
77,315
87,876
98,059
100,699
113,899
124,459
Boiler Output Capacity
All data was generated under lab conditions. Th
ere is no extra benefi t in the shaded out areas on the tables. Results will
vary under individual applications.
NOTICE
It is not recommended to have a unit that is 400,000 Btu input or greater on the SIT040DW and SIT050DW models.
NOTICE