York DC SERIES Installation Manual

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York DC SERIES Installation Manual Manual pdf 46 page image

5120410-XIM-B-021646 Johnson Controls Unitary ProductsTable 27: Additional Static Resistance DC120/150 Cabinet (Imperial)CFM Cooling Only11. Add these resistance values to the available static resistance in the respective Blower Performance Tables.Economizer2 32. Deduct these resistance values from the available external static pressure shown in the respective Blower Perfor-mance Table.3. The pressure drop through the economizer is greater for 100% outdoor air than for 100% return air. If the resistance ofthe return air duct system is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.Electric Heat KW 218 24 36 541900 0.06 0.02 0.06 0.07 0.08 0.102100 0.07 0.02 0.07 0.08 0.09 0.112300 0.08 0.02 0.08 0.09 0.10 0.132500 0.09 0.02 0.09 0.10 0.11 0.142700 0.11 0.03 0.10 0.12 0.13 0.162900 0.12 0.03 0.11 0.13 0.14 0.183100 0.14 0.03 0.13 0.15 0.16 0.203300 0.16 0.03 0.14 0.17 0.18 0.223500 0.18 0.04 0.16 0.19 0.20 0.243700 0.20 0.04 0.18 0.21 0.22 0.263900 0.23 0.04 0.20 0.23 0.24 0.284100 0.25 0.04 0.22 0.25 0.26 0.314300 0.28 0.05 0.24 0.28 0.29 0.344500 0.30 0.05 0.26 0.30 0.31 0.374700 0.33 0.05 0.29 0.33 0.34 0.404900 0.36 0.05 0.31 0.35 0.37 0.435100 0.39 0.06 0.34 0.38 0.40 0.465300 0.42 0.06 0.37 0.41 0.43 0.495500 0.45 0.06 0.40 0.44 0.46 0.535700 0.48 0.06 0.43 0.47 0.49 0.565900 0.52 0.07 0.46 0.50 0.53 0.596100 0.56 0.07 0.49 0.53 0.56 0.626300 0.60 0.07 0.53 0.56 0.59 0.65Table 28: Additional Static Resistance DC090 Cabinet (Imperial)CFM Cooling Only11. Add these resistance values to the available static resistance in the respective BlowerPerformance Tables.Economizer2 32. Deduct these resistance values from the available external static pressure shown in therespective Blower Performance Table.3. The pressure drop through the economizer is greater for 100% outdoor air than for 100%return air. If the resistance of the return air duct system is less than 0.25 IWG, the unit willdeliver less CFM during full economizer operation.1900 -0.004 0.072100 0.01 0.092300 0.01 0.112500 0.02 0.132700 0.03 0.162900 0.04 0.183100 0.05 0.203300 0.06 0.223500 0.07 0.243700 0.08 0.273900 0.09 0.294100 0.09 0.314300 0.10 0.33