Boiler Manual - Weil-McLain

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GV90+ gas-fired water boiler — Boiler ManualDimensions and ratings (continued)Figure 110 Multiple GV90+ boilers — ratings and engineering data — maintain the clearances shown on pages 6and 7 — see Figure 28, page 23 and Figure 29, page 23 for layout optionsBoilers in systemModel GV90+TotalCSAinputInput,MBHDOE HeatingcapacityOutput,MBHBoilerH.P.Net waterratings- MBHManifoldedcombustion airduct sizeSquareinches3 4 5 6 - Note 1 - Note 2Note 3Figure 37, page 312 140 130 3.9 112 702 210 194 5.8 168 1052 280 260 7.8 226 1402 350 322 9.6 280 1753 210 195 5.8 168 1053 315 291 8.7 252 1583 420 390 11.7 339 2103 525 483 14.4 420 2634 280 260 7.8 224 1404 420 388 11.6 336 2104 560 520 15.5 452 2804 700 644 19.2 560 3505 350 325 9.7 280 1755 525 485 14.5 420 2635 700 650 19.4 565 3505 875 805 24 700 4386 420 390 11.7 336 2106 630 582 17.4 504 3156 840 780 23.3 678 4206 1050 966 28.9 840 5257 490 455 13.6 392 2457 735 679 20.3 588 3687 980 910 27.2 791 4907 1225 1127 33.7 980 6138 560 520 15.5 448 2808 840 776 23.2 672 4208 1120 1040 31.1 904 5608 1400 1288 38.5 1120 700Note 1Note 2Note 3Based on standard test procedures outlined by DOE for individual boilers.Net I=B=R ratings are based on piping and pickup allowance of 1.15.Consult Weil-McLain Technical Services for other allowances.All GV90+ installations require a separate vent pipe and termination for each boiler. Vent piping cannot be manifolded. Install andterminate vents as described in vent/air installation instructions in this manual.Combustion air piping can be individually piped or manifolded. See Figure 37, page 31, for manifolded air piping.102Part number 550-142-054/1211
GV90+ gas-fired water boiler — Boiler ManualDimensions and ratings (continued)Figure 111 Engineering data — see page 101 for additional technical informationBoilerModelWater flow rate per boiler Vent/air pipe size —GPM @ 20°F riseGPM @ 40°F riseProvide a separate ventfor each boilerNote 1GV90+3 6.5 3.3 3”GV90+4 9.7 4.9 3”GV90+5 13.0 6.5 3”GV90+6 16.1 8.1 3”Note 1All GV90+ 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 Figure 37, page 31, for manifolded air piping.Part number 550-142-054/1211 103
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Boiler Manual - Weil-McLain

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