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2. C
(
ONTROLS
2.2
O
PTIONAL
For more convenience, this unit can also be controlled using the optional main
wall control VT4W. Only one VT4W can be connected to the unit.
NOTES: 1. The integrated control must be turned OFF to use the optional
2. If an optional auxiliary control is used, if activated, this auxiliary
When power is applied for the first time or after a
power failure, this control is in OFF mode. Activate
the push button; the light indicator will show clearly in
which operating mode the unit is.
L
I
IGHT
NDICATOR
C
OLOR
GREEN
YELLOW
RED
N
O LIGHT
'
)
CONT
D
M
C
AIN
ONTROL
main control VT4W.
control will override the VT4W control operation.
M
ODE
INTERMITTENT
MIN
MAX
OFF
VT4W
Select this mode when you are away
from the house for a few days. Also,
when you deem the inside air is too
dry in heating season, or too humid
during cooling season. In this mode,
the unit is OFF for 40 minutes per
hour and ventilates at minimum speed
the remaining 20 minutes of the hour.
Minimum ventilation speed for normal
daily operation.
Maximum ventilation speed for excess
pollutants
odors, smoke, etc.)
Turn off the unit before performing
maintenance.
5
MAX
MIN
INTERMITTENT
VT4W
VC0070
S
U
UGGESTED
SE
and
humidity
(parties,
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