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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

Summary of Contents for Squire SIT040DW

Page 1: ...ed heating installer service technician Read all instructions before installing Perform steps in the order given Failure to comply could result in severe personal injury death or substantial property...

Page 2: ...EFORE PROCEEDING 3 1 GENERAL INFORMATION Operating Restrictions 4 Double Wall Heat Exchanger 4 2 PRE INSTALLATION Locating the Tank 5 Recommended Clearances 5 3 BOILER SIDE PIPING Zone with Circulator...

Page 3: ...AS Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instruc...

Page 4: ...B C D 22 5 45 F 1 MPT SEE NOTE 2 1 MPT 1 MPT AQUASTAT SENSOR WELL NOTES 1 1 FPT ON MODELS SIT040DW 050DW 1 RELIEF VALVE CONNECTION 2 HOT WATER OUTLET 3 BOILER WATER IN 4 BOILER WATER OUT 5 DRAIN COLD...

Page 5: ...appliance and must also be kept vertical on a level surface 2 Keep distance between boiler and water heater to a minimum to a reduce piping heat loss b provide minimal friction loss 3 Figure 1 1 on pa...

Page 6: ...8 GPM 12 GPM 16 GPM 20 GPM 25 GPM 30 GPM SIT040 1 1 1 36 5 12 05 0 87 1 99 4 05 6 00 9 89 14 62 20 11 SIT050 1 1 1 36 5 12 05 0 87 1 99 4 05 6 00 9 89 14 62 20 11 SIT065 1 5 1 5 1 44 15 03 0 94 2 14...

Page 7: ...EXCEED 4 PIPE DIA OR A MAXIMUM OF 12 APART TANK SENSOR AQUASTAT RELIEF VALVE Y STRAINER DRAIN FIELD SUPPLY HOT WATER OUT ANTI SCALD MIXING VALVE RECIRCULATION PUMP CHECK VALVE DRAIN ZONE 1 ZONE 2 ZONE...

Page 8: ...D SYSTEM CIRCULATOR SYSTEM SUPPLY SENSOR WHEN USED NOT TO EXCEED 4 PIPE DIA OR A MAXIMUM OF 12 APART TANK SENSOR AQUASTAT RELIEF VALVE Y STRAINER DRAIN FIELD SUPPLY RECIRCULATION PUMP CHECK VALVE DRAI...

Page 9: ...IN POINT TYPICAL MAKE UP WATER FROM SYSTEM BOILER CIRCULATOR SYSTEM CIRCULATOR TO SYSTEM SYSTEM SUPPLY SENSOR DRAIN DRAIN FIELD SUPPLY RECIRCULATION PUMP TANK SENSOR AQUASTAT Y STRAINER RECOMMENDED HO...

Page 10: ...R RECOMMENDED BOILER CIRCULATOR DOMESTIC HOT WATER CIRCULATOR UNION TYPICAL TEMPERATURE PRESSURE GAUGE DRAIN PRESSURE RELIEF VALVE KNIGHT BOILER SQUIRE SQUIRE HOT WATER OUT ANTI SCALD MIXING VALVE REL...

Page 11: ...reverse return piping layout see FIG 3 4 Each tank must have its own T P valve It is recommended that each tank be equipped with its own isolation valves unions and drains so that one tank may be rem...

Page 12: ...tion VIII Interpretation VIII 1 86 136 Check with local codes for applicability Do not place a valve between the combination T P relief valve and the tank Determine T P relief valve size by the follow...

Page 13: ...ter system Refer to the expansion tank manufacturer s installation instructions for proper sizing 4 Domestic side tank piping continued WARNING Failure to install and maintain a new listed 3 4 X 3 4 T...

Page 14: ...sensor has a built in high temperature limit set at 194 F NOTICE The sensor supplied contains an Auto Reset High Limit 194 F 3 The Knight boiler will automatically read the sensor and default the tank...

Page 15: ...t control 100208546 can be ordered from your local Lochinvar distributor 2 Connect Aquastat to the zone controller for the Indirect Water Heater Zone 3 Adjust Aquastat to the desired temperature INDIR...

Page 16: ...xtended period of time after installation Flush the indirect water heater by drawing at least three times its volume from the tank 3 Make sure that all electrical connections are made correctly and th...

Page 17: ...to allow air to escape from the system 4 When a steady stream of water flows from the faucets the water heater is filled Close the faucets and check for water leaks at the water heater drain valve com...

Page 18: ...er AHRI Rating Indirect Water Heater Model Number Potable Water Volume Gal Heat Source Water Volume Gal Standby Heat Loss F hr First Hour Rating Gal hr Continuous Draw Rating Gal hr Minimum Heat Outpu...

Page 19: ...han 165 gallons Fixture Count Guide To quickly estimate the minimum gallons of hot water required based on a family size number of baths and hot water appliances the First Hour Rating of the Squire mu...

Page 20: ...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 S...

Page 21: ...34 339 258 365 278 115 000 371 281 379 287 421 317 428 322 140 000 454 340 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...

Page 22: ...PUT 81 087 98 603 107 683 115 469 125 746 140 766 154 389 81 087 98 603 107 683 115 469 125 746 140 766 154 389 121 955 132 982 151 146 168 661 173 202 195 905 214 070 Table 8D First Hour Rating 200 F...

Page 23: ...Notes Installation Operation Manual 23...

Page 24: ...ision A Process 3000001798_Change 500002025 initial release Revision B PCP 3000006451 CN 500006731 reflects the addition of the CSA 1 91 logo to the front cover MM 100273038_DIR 2000529317 Rev B 02 17...

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