Additional Static Resistance
Size | Model | CFM | Cooling Only1 | Economizer2 3 |
|
| Electric Heat kW2 |
|
| ||
(Tons) | 95 | 18 |
| 24 |
| 36 | 54 | ||||
|
|
|
|
|
| ||||||
|
| 1900 | 0.00 | 0.07 | 0.05 | 0.06 |
| 0.07 |
| 0.08 | 0.10 |
|
| 2100 | 0.09 | 0.06 | 0.07 |
| 0.08 |
| 0.09 | 0.11 | |
|
| 2300 | 0.11 | 0.07 | 0.08 |
| 0.09 |
| 0.10 | 0.13 | |
|
| 2500 | 0.13 | 0.08 | 0.09 |
| 0.10 |
| 0.11 | 0.14 | |
|
| 2700 | 0.16 | 0.09 | 0.10 |
| 0.12 |
| 0.13 | 0.16 | |
|
| 2900 | 0.18 | 0.10 | 0.11 |
| 0.13 |
| 0.14 | 0.18 | |
078 (6.5) | ZH/ZR/XP | 3100 | 0.20 | 0.12 | 0.13 |
| 0.15 |
| 0.16 | 0.20 | |
090 (7.5) | 3300 | 0.22 | 0.13 | 0.14 |
| 0.17 |
| 0.18 | 0.22 | ||
|
|
| |||||||||
|
| 3500 | 0.24 | 0.15 | 0.16 |
| 0.19 |
| 0.20 | 0.24 | |
|
| 3700 | 0.27 | 0.17 | 0.18 |
| 0.21 |
| 0.22 | 0.26 | |
|
| 3900 | 0.29 | 0.19 | 0.20 |
| 0.23 |
| 0.24 | 0.28 | |
|
| 4100 | 0.31 | 0.21 | 0.22 |
| 0.25 |
| 0.26 | 0.31 | |
|
| 4300 | 0.30 | 0.23 | 0.24 |
| 0.28 |
| 0.29 | 0.34 | |
|
| 4500 | 0.35 | 0.25 | 0.26 |
| 0.30 |
| 0.31 | 0.37 | |
|
| 1900 | 0.06 | 0.02 | 0.05 | 0.06 |
| 0.07 |
| 0.08 | 0.10 |
|
| 2100 | 0.07 | 0.02 | 0.06 | 0.07 |
| 0.08 |
| 0.09 | 0.11 |
|
| 2300 | 0.08 | 0.02 | 0.07 | 0.08 |
| 0.09 |
| 0.10 | 0.13 |
|
| 2500 | 0.09 | 0.02 | 0.08 | 0.09 |
| 0.10 |
| 0.11 | 0.14 |
|
| 2700 | 0.11 | 0.03 | 0.09 | 0.10 |
| 0.12 |
| 0.13 | 0.16 |
|
| 2900 | 0.12 | 0.03 | 0.10 | 0.11 |
| 0.13 |
| 0.14 | 0.18 |
|
| 3100 | 0.14 | 0.03 | 0.12 | 0.13 |
| 0.15 |
| 0.16 | 0.20 |
|
| 3300 | 0.16 | 0.03 | 0.13 | 0.14 |
| 0.17 |
| 0.18 | 0.22 |
|
| 3500 | 0.18 | 0.04 | 0.15 | 0.16 |
| 0.19 |
| 0.20 | 0.24 |
|
| 3700 | 0.20 | 0.04 | 0.17 | 0.18 |
| 0.21 |
| 0.22 | 0.26 |
102 (8.5) |
| 3900 | 0.23 | 0.04 | 0.19 | 0.20 |
| 0.23 |
| 0.24 | 0.28 |
120 (10) | ZH/ZR/XP | 4100 | 0.25 | 0.04 | 0.21 | 0.22 |
| 0.25 |
| 0.26 | 0.31 |
150 (12.5) |
| 4300 | 0.28 | 0.05 | 0.23 | 0.24 |
| 0.28 |
| 0.29 | 0.34 |
|
| 4500 | 0.30 | 0.05 | 0.25 | 0.26 |
| 0.30 |
| 0.31 | 0.37 |
|
| 4700 | 0.33 | 0.05 | 0.28 | 0.29 |
| 0.33 |
| 0.34 | 0.40 |
|
| 4900 | 0.36 | 0.05 | 0.30 | 0.31 |
| 0.35 |
| 0.37 | 0.43 |
|
| 5100 | 0.39 | 0.06 | 0.33 | 0.34 |
| 0.38 |
| 0.40 | 0.46 |
|
| 5300 | 0.42 | 0.06 | 0.35 | 0.37 |
| 0.41 |
| 0.43 | 0.49 |
|
| 5500 | 0.45 | 0.06 | 0.38 | 0.40 |
| 0.44 |
| 0.46 | 0.53 |
|
| 5700 | 0.48 | 0.06 | 0.41 | 0.43 |
| 0.47 |
| 0.49 | 0.56 |
|
| 5900 | 0.52 | 0.07 | 0.44 | 0.46 |
| 0.50 |
| 0.53 | 0.59 |
|
| 6100 | 0.56 | 0.07 | 0.47 | 0.49 |
| 0.53 |
| 0.56 | 0.62 |
|
| 6300 | 0.60 | 0.07 | 0.50 | 0.53 |
| 0.56 |
| 0.59 | 0.65 |
1.Add these values to the available static resistance in the respective Blower Performance Tables.
2.Deduct these values from the available external static pressure shown in the respective Blower Performance Tables.
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 is less than 0.25 IWG, the unit will deliver less CFM during full economizer operation.
Johnson Controls Unitary Products | 77 |