Duct Connection - Daikin VAM-GVJU Manual

EDUS711116
NOTE
• Do not change operations suddenly.
It can result not only in malfunction but also failure of
switches or relays in the remote controller.
• Never press the button of the remote controller with a
hard, pointed object.
The remote controller may be damaged.
FRESH UP OPERATION
• If the field setting for Fresh up operation is set to "Fresh up
air supply" : The volume of outdoor air supplied into the
room is larger than that of exhaust air to outside. (This oper-
ation prevents odor and moisture from kitchens and toilets
from flowing into rooms.)
• If the field setting for Fresh up operation is set to "Fresh up
air exhaust" :The volume of exhaust air to outs
that of outdoor air supplied into the room. (This operation
prevents hospital odor and floating bacteria from flowing out
to corridors.)
DIRECT DUCT CONNECTION SYSTEM
Installation Examples
Direct duct connection system
Independent duct system
The ERV unit cannot be operated independently when the
air conditioner is connected to the ERV unit via a duct.
When using the ERV unit, set the fan speed of air condi-
tioner to "Low".
3-2 SCHEDULE AND OFF TIMER
For details of the following settings, refer to the operation man-
ual attached to the remote controller.
SCHEDULE
Daily Patterns
• Day settings are selected from three patterns, i.e., "7Days",
"Weekday/Weekend" and "Weekday/Sat/Sun".
Settings
• Set the startup time and operation stop time.
ON: Startup time, cooling and heating temperature set-
points can be configured.
OFF: Operation stop time, cooling and heating setback tem-
perature setpoints can be configured.
( --: Indicates that the setback function is disabled for
this time period. )
_: Indicates that the temperature setpoint and setback
temperature setpoint for this time period is not speci-
fied. The last active setpoint will be utilized.
• Up to five actions can be set for each day.
English
VAM-GVJU
OFF TIMER
Settings.
• Possible to set in 10 minute increments from 30 to 180 min-
utes.
3-3 NIGHTTIME FREE COOLING OPERATION
〈AUTOMATIC HEAT PURGE FUNCTION AT NIGHT〉
The nighttime free cooling is an energy-saving function which
works at night when the air conditioner is off, reducing the cool-
ing load in the morning when the air conditioner is turned on by
ventilating rooms which contain office equipment which raises
the room temperature.
• Nighttime free cooling only works during cooling and when
connected to VRV system.
• Nighttime free cooling is set to "off" in the factory settings;
so request your dealer to turn it on if you intend to use it.
is larger than
Operation image
100
90
80
70
22:00
Outdoor temperature
(a)
Indoor temperature
(b)
Set temperature
(c)
Operating state of Air conditioner
(d)
Operating state of ERV
(e)
EXPLANATION OF NIGHTTIME FREE COOL-
ING OPERATION IMAGE
The unit compares the indoor and outdoor temperatures after
the air conditioner stops for the night. If the following conditions
are satisfied, the operation starts, and when the indoor temper-
ature reaches the air conditioning setting, the operation stops.
<Conditions>
(1) the indoor temperature is higher than the air conditioning
setting and
(2) the outdoor temperature is lower than the indoor temperature.
If the above conditions are not satisfied, reevaluation is made
every 60 minutes.
NOTE
• The nighttime free cooling operation works when the ERV
unit is off. Therefore, it is not possible to stop the nighttime
free cooling operation, though the forced off is input from the
optional controllers for centralized control.
Operation Manual
(a)
(c)
(b)
ON ON OFF OFF
OFF
Nighttime free cooling operation
OFF
24:00
Following morning
(time)
7
3P034927-7M
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