Air Dryers Cycling vs. Non-Cycling Dryers CompAir features a unique, patented heat exchanger located inside a dry non-toxic Cold Energy Block. This innovative design offers electrical energy savings of 30 to 80% compared to traditional non-cycling refrigeration dryers. Because cycling dryers are able to adjust their capacity to match the actual compressed air load profile, they are able to provide dramatic savings in power consumption, when compared to non-cycling dryers, during times when the demand or ambient conditions result in a load less than design. The graph shown illustrates the yearly power costs of 12oo cfm cycling and non-cycling dryers. The cycling effect of the CTD1200 is shown on the bottom two lines. Cycling saves energy both in response to reduced compressed air flow rate (cfm) as well as to reduced compressed air inlet temperature. The upper line represents the constant cost associated with a non-cycling dryer (which can only adjust to load variations by false loading of the evaporator using a hot gas bypass valve) that consumes full power regardless of load.

	Model Normal capacity Absorbed power Air connections Dimensions L x W x H Weights Condensate flow (1) scfm (2) kW NPT inches (3) lb lb/h CTD15 18 0.25 1/2" 18.3x16.3x21.7 108 0.38 CTD25 30 0.39 1/2" 18.3x16.3x21.7 121 0.63 CTD35 35 0.29 3/4" 23x19.3x26.4 176 0.74 CTD50 50 0.42 3/4" 23x19.3x26.4 176 1.05 CTD75 75 0.59 3/4" 23x19.3x26.4 203 1.58 CTD100 100 0.79 3/4" 23x19.3x26.4 203 2.09 CTD125 120 0.79 1" 29.3x21.7x36.5 278 2.54 CTD150 150 1.03 1" 29.3x21.7x36.5 337 3.15 CTD175 180 1.24 1" 29.3x21.7x36.5 337 3.80 CTD200 200 1.02 1 1/2" 29.3x27.6x38 388 4.20 CTD250 250 1.27 1 1/2" 29.3x27.6x38 388 5.25 CTD300 321 1.84 1 1/2" 29.3x27.6x38 483 6.74 CTD350 350 1.68 2" 29.3x40.2x46.7 706 7.35 CTD400 420 2.01 2" 29.3x40.2x46.7 706 8.82 CTD450 450 2.56 2" 29.3x40.2x46.7 758 9.45 CTD500 516 2.94 2" 29.3x40.2x46.7 758 10.8 CTD600 650 2.85 3" 33.9x51.2x81.7 1378 13.7 CTD700 700 3.18 3" 33.9x51.2x81.7 1389 14.7 CTD800 800 3.63 3" 33.9x51.2x81.7 1389 16.8 CTD1000 1000 4.88 3" 33.9x51.2x81.7 1384 21.0 CTD1200 1200 5.85 3" 33.9x51.2x81.7 1384 25.2 CTD1600 1600 7.17 4" 33.9x51.2x81.7 2513 33.6 CTD2000 1900 9.3 4" 33.9x51.2x81.7 3064 39.9   Model Air pressure drop (1) Electrical supply Max. current* Fan current Fan power Compress. current LCR Fuse TRM(a)-ATQ(b) Heat rejection psi V/ph/Hz Amps Amps kW Amps kW CTD15 3.99 115±5%/1/60 4.3 0.7 0.054 3.63 12 (a) 0.74 CTD25 3.95 115±5%/1/60 5.5 0.7 0.054 4.81 12 (a) 1.2 CTD35 2.05 115±5%/1/60 6.4 1.6 0.12 4.81 12 (a) 1.11 CTD50 4.18 115±5%/1/60 6.4 1.6 0.12 4.81 12 (a) 1.11 CTD75 2.55 115±5%/1/60 12.0 1.6 0.12 10.2 15 (a) 2.45 CTD100 4.54 115±5%/1/60 12.0 1.6 0.12 10.2 15 (a) 2.45 CTD125 4.14 230±5%/1/60 6.4 0.78 0.11 5.6 15 (a) 2.43 CTD150 2.93 230±5%/1/60 8.5 0.48 0.11 8 15 (a) 4.08 CTD175 4.22 230±5%/1/60 8.5 0.48 0.11 8 15 (a) 4.08 CTD200 2.84 230±5%/1/60 9.3 0.93 0.2 8.4 20 (a) 4.7 CTD250 4.44 230±5%/1/60 9.3 0.93 0.2 8.4 20 (a) 4.7 CTD300 4.57 230±5%/1/60 12.6 1.3 0.3 11.3 20 (a) 6.16 CTD350 3.19 460±5%/3/60 5.4 0.71 0.44 4.5 12 (b) 7.11 CTD400 4.59 460±5%/3/60 5.4 0.71 0.44 4.5 12 (b) 7.11 CTD450 3.40 460±5%/3/60 6.1 0.71 0.44 5.2 15 (b) 9.52 CTD500 4.47 460±5%/3/60 6.1 0.71 0.44 5.2 15 (b) 9.52 CTD600 2.67 460±5%/3/60 6.5 1.1 0.7 5.2 20 (b) 10.49 CTD700 3.00 460±5%/3/60 8.3 1.1 0.7 7 20 (b) 13.05 CTD800 3.92 460±5%/3/60 8.3 1.1 0.7 7 20 (b) 13.05 CTD1000 2.72 460±5%/3/60 13.3 1.1 0.7 12 20 (b) 19.92 CTD1200 3.92 460±5%/3/60 13.3 1.1 0.7 12 20 (b) 19.92 CTD1600 3.92 460±5%/3/60 14.8 2x1.1 2x0.7 12.3 30 (b) 25.98 CTD2000 3.57 460±5%/3/60 20.0 2x1.1 2x0.7 17.5 30 (b) 31.31 *Max current at operational limit conditions (1) Capacities to ANSI/CAGI ADF 100-1998: 100°F inlet temperature, 100 psig inlet pressure, 100°F ambient temperature, to deliver 33°F to 39°F pressure dew point (2) Absorbed power at nominal working conditions (3) Shipping weights (4) Hermetically sealed refrigerant compressors used with R134a gas (5) Standard units suitable for working pressure up to 230 psig and optional versions are available up to 725 psig (6) Minimum and maximum ambient temperature 41°F and 110°F (7) Maximum compressed air inlet temperature 140°F All models IP22 insulation class All models free-field sound pressure level < 70dBA Installation CTD dryers must be sited on level ground in an indoor frost-free location. Adequate ventilation and maintenance access must be provided. The dryer should normally be connected after the receiver with appropriate CompAir filter protection.
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