12
5. A
IR
F
LOW
B
ALANCING
(
CONT
'
D
)
CAUTION
Some activities create dust or vapors wich may damage your unit. You must
turn off your unit by disconnecting it in the following situation:
• Major renovation work
• Sanding of gypsum joints
• House building
• Varnishing
Balancing Procedure (cont'd):
5. If the furnace has a low speed option, select the low speed option and check if the fresh
air flow and the stale air flow are still balanced.
6. Remove flow collars, reconnect the ducts and seal with duct tape.
Write the required airflow information on a label and stick it near the unit for future reference:
date, maximum speed airflows, your name and phone number and business address.
NOTES: • Most flow collar kits provide a conversion chart situated on the collar which
enables you to convert magnehelic gauge readings to equivalent cfm values.
• A difference of ± 10 cfm ( ± 0.015 inches water gauge) between the 2 readings
is considered balanced.
• If you are using only one flow collar, then, after completing the first reading,
transfer this measuring device to the other side of the unit and take the
second reading.
6. W
ALL
C
ONTROL
(
FAE
125
M
AND
VFAE
125
M
ONLY
)
6.1 I
NSTRUCTIONS
R
EGARDING
W
ALL
C
ONTROL
The wall control works with a dehumidistat that allows you to select the desired humidity level
according to your needs. If the selector is set above the click, the unit will close its damper
and stop air exchange with outside. If the selector is set below the click, the unit will open its
dampers and allow air exchange with the outside until the desired humidity level has been
reached. The wall control part number for FAE125M unit is 11297, and the wall control part
number for VFAE125M unit is 200694.
During very heavy snow storm, the unit should also be turned off to avoid problems caused
by snow entering the unit, if it is not equipped with an anti-gust intake hood.
6.2 W
ALL
C
ONTROL
C
ONNECTION
TO
THE
U
NIT
Connect one damper actuator wire to one transformer wire. Connect the second transformer
wire to one wall control wire. Connect the second wall control wire to the second damper
actuator wire. See below.
VE0211A
Damper
Actuator
Compartment
Class 2 Transformer
Not supplied
24 Vac
Class 2
120 Vac
Field wiring
Not supplied
Wall
Control
Wire Nuts
Included
Wire Nut
Not included