Installation Guide

- 18 -

CALIBRATE IQ BLOWER

SYSTEM

After the hood is installed and wired,

engage the calibration process (our

Guaranteed Performance System

Technology to ensure full-rated air ow is

being delivered). Prior to calibration, ensure

that all  lters, light bulbs and duct system

are installed.

CALIBRATION PROCESS Fig. 27

Hold the calibration button for 3 seconds;

calibration button will light up and stay on

for up to 13 minutes. The blower will start

and begin the calibration process. When

calibration is complete, one of two things

will occur:

FIG. 27

CALIBRATION

LIGHT

CALIBRATION

BUTTON

1.The blower turns o and calibration button light stays on = Successful calibration. Press

the button to turn o the LED. Note: The LED will also turn o if you select any blower

speed on the control.

2.The blower turns o and calibration button light blinks continuously = Too much

restriction in the ductwork is preventing the IQ Blower System™ from achieving the rated

air ow. The blower is automatically set to maximum intensity. NOTE: Common items that

cause restrictions: restricted damper  ap(backdraft damper, wall cap, roof cap), too many

elbows, duct size less than 80% of hood outlet, poor transition, use of  ex ducting and/or

crushed ducting.

Three options are available if your hood system has too much restriction:

1. Accept air ow as is.

a. Press the calibration button to accept air ow as is. The IQ Blower System™ is now

con gured to the highest possible performance. The blinking calibration light goes out.

Note: The LED will also turn o if you select any blower speed on the control.

2. Correct duct restriction, clear the original calibration data, and repeat the calibration

process.

a. Correct the duct restriction.

b. Clear the original calibration data by holding calibration button for 10 seconds. The light

will blink 3 times to con rm and the blower con guration will go back to default settings.

c. Repeat calibration process from the beginning.

3. Clear calibration data to reset hood to default factory setting and achieve standard high

pressure blower performance.

a. Clear calibration data and reset hood to factory default setting by holding calibration

button for 10 seconds. The light will blink 3 times to con rm and the blower con guration

will go back to default settings.