Rev 6.1 November 1, 2016
13
1.
Before placing the manometer, reset it to zero. If using a
magnehelic gage, ensure the gage is placed plumb and level.
2.
According to the air flow to be measured, connect tubing
from instrument to EXHAUST air flow or FRESH air flow
pressure taps (see illustrations at right).
3.
If the readings on your instrument drop below zero, reverse
the tubing connections.
4.
Take and record pressure readings from each air stream,
consulting the air flow chart mounted on the unit’s door to
determine air flow.
5.
Balance air flows so that they equal or within 10% of each
other.
2.9.1.
Adjusting Fan Speed for Balancing and Capacity Requirements
For high-speed adjustment/balancing, use any means to initiate high speed (e.g. ES-M1, R—Hi jumper
wire, or engage 24V R—Hi control), then:
1.
Press and hold either the FRESH air or EXHAUST air pushbuttons (not both) for 3 Seconds to
initiate SPEED ADJUST MODE.
2.
Press the corresponding button to adjust the fresh air
fan or the exhaust fan speed, thereby changing the air
flow. Each press reduces motor speed until the
default minimum is reached, at which point the
motor will return to its peak speed. Allowing a brief
pause between presses (about 0.5 seconds), you will
press the adjust button about 70 times before
reaching minimum speed. During the balancing
procedure, you can switch between adjusting the
fresh air motor or exhaust air motor.
3.
To exit balancing/speed adjust mode, stop pressing buttons for 10 seconds. This will place the
unit back in operating mode with the new speeds saved to the circuit board’s memory.
Low-Speed Adjustment/Balancing.
If low speed adjustment is desired, use a jumper wire (R—Lo) or
remote control to put the unit into low speed and follow steps 1-3.
Tubes
Tubes
Unit Air Flow Chart
NOTE: ΔP/Airflow
values are different
for exhaust and
supply air streams
