York DM036 Installation Manual

Also see for DM 036: Technical guide

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York DM036 Installation Manual Manual pdf 14 page image

5011492-XIM-B-081514 Johnson Controls Unitary ProductsOptional Gas HeatThese gas-fired heaters have aluminized-steel or optionalstainless steel, tubular heat exchangers with spark ignition withproven pilot.All gas heaters are shipped from the factory equipped fornatural gas use. See Gas Heat Application Data Table.For natural gas heating installations in locations requiring lowNOx emissions, Accessory model 1LN0406 must be used.Gas PipingProper sizing of gas piping depends on the cubic feet per hourof gas flow required, specific gravity of the gas and the length ofrun. “National Fuel Gas Code” Z223.1 (in U.S.A.) or the currentGas Installation Codes CSA-B149.1 (in Canada) should befollowed in all cases unless superseded by local codes or gasutility requirements. Refer to the Pipe Sizing Table 5.The heating value of the gas may differ with locality. The valueshould be checked with the local gas utility.NOTE: There may be a local gas utility requirement specifyinga minimum diameter for gas piping. All units require a½” pipe connection at the entrance fitting.Table 3: Electric Heater Supply Air LimitationsUNIT MODEL SIZENOMINAL TONS VOLTAGE MINIMUM SUP-PLY AIRHEATER SIZE NOMINAL KW7 10 15 20 303 380/415-3-50 M3/S 0.47 0.57 0.57 0.61 -CFM 1100 1200 1200 1300 -4 380/415-3-50 M3/S 0.61 0.61 0.61 0.61 -CFM 1300 1300 1300 1300 -5 380/415-3-50 M3/S 0.75 0.75 0.75 0.75 0.75CFM 1600 1600 1600 1600 16006.3 380/415-3-50 M3/S 0.85 0.85 0.85 0.85 0.85CFM 1800 1800 1800 1800 1800Table 4: Gas Heat Application DataGAS HEATOPTIONINPUT CAPACITYkW[MBH]OUTPUT CAPACITYkW[MBH]AVAILABLE ONMODELSGAS RATE1 M3/S[Ft3/Hr]TEMPERTURE RISE ºC[°F] AT FULL INPUT2MIN. MAX.N04 15[50] 12[40] 3 TON 0.02[47] 8[15] 25[45]N06 22[75] 18[60] 4 TON 0.03[70] 14[25] 31[55]N08 29[100] 23[79] 5/6 TON 0.04[93] 14[25] 31[55]1. Based on 1075 Btu/Ft 3.2. The air flow must be adjusted to obtain a temperature rise within the range shown.NOTE: Gas Heaters are shipped available for natural gas, but can be converted to L.P. with Kit Model No. 1NP0434.All furnaces meet the latest California seasonal efficiency requirements.Table 5: GAS PIPE SIZINGLENGTH INM[FT]NOMINAL IRON PIPE SIZE12.7mm[1/2 in.]19.0mm[3/4 in.]25.0mm[1 in.]32.0mm[1-1/4 ]in.3[10] 3.74[132] 7.87[278] 14.72[520) 29.72[1050]6[20] 2.60[92] 5.38[190] 9.91[350] 20.66[730]9[30] 2.07[73] 4.3[152] 8.07[285] 16.70[590]12[40] 1.78[63] 3.68[130] 6.93[245] 14.15[500]15[50] 1.58[56] 3.25[115] 6.08[215] 12.45[440]18[60] 1.42[50] 2.97[105] 5.52[195] 11.32[400]21[70] 1.30[46] 2.72[96] 5.09[180] 10.47[370]24[80] 1.22[43] 2.55[90] 4.81[170] 9.91[350]27[90] 1.13[40] 2.38[84] 4.53[160] 9.06[320]30[100] 1.08[38] 2.23[79] 4.25[150] 8.63[305]Maximum capacity of pipe in cubic meter/cubic feet of gas perhour. (Based upon a pressure drop of 7.62mm/0.3 inch watercolumn and 0.6 specific gravity gas).