Friedrich VERT-I-PAK Series User Manual

9
Air Flow Data
Indoor CFM & External Static Pressure
Indoor airow may be determined by measuring the external static pressure (ESP) of the duct system using an inclined
manometer or magnahelic gauge and consulting the above chart to derive actual air ow. Under no circumstances should
the Vert-I-Pak be operated at an higher external static pressure than indicated above. Operation of the Vert-I-Pak over the
recommended ESP will result in inadequate airow, leading to poor performance and/or premature component failure.
Blower Control
All Vert-I-Paks, by default, will be congured to low speed blower operation. The speed setting can be changed to high speed by updating
the speed tap settings on the fan control relay. The blower fan speed setting cannot be changed at the thermostat. Regardless of wiring
GH and/or GL, the unit will continue to operate at the speed setting at the fan control relay.
Note: Any non-Friedrich thermostat or low voltage device being powered by the Vert-I-Pak will need to be reviewed and approved for use.
MODEL VHA09 VHA12 VHA18 VHA24
Fan Speed Low High Low High Low High Low High
ESP (“) SCFM
0.0” 360
420 360 460 620 705 675 765
0.05” 340
400 340 450 580 675 635 735
0.10” 325
385 325 430 550 640 600 700
0.15” 310 370 310 415 510 610 560 670
0.20” 295 355 295 400 480 585 525 635
0.25” 270
*
325 270
*
380 450 565 490 615
0.30” 260 300
*
260 350
*
400
*
550 440
*
600
0.35” -- -- -- -- 365 500 400 540
0.40” -- -- -- -- 320 450
*
350 490
*
*Maximum Allowable Static. Units rated at 0.3" ESP.
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Friedrich VERT-I-PAK Series Specifications

General

Brand	Friedrich
Model	VERT-I-PAK Series
Category	Heat Pump
Language	English