17 Configuration
Installation and operation manual
21
FXHQ-A
VRV system air conditioner
3P668115-3E – 2022.11
INFORMATION
▪ The connection of optional accessories to the indoor
unit might cause changes to some field settings. For
more information, see the installation manual of the
optional accessory.
▪ Following setting are only applicable when using the
BRC1H52* user interface. When using any other user
interface, see the installation manual or service manual
of the user interface.
Setting: Ceiling height
This setting must correspond with the actual distance to the floor and
the capacity class.
If the distance to the floor is (m)
Then
(1)
63
FXHQ100
M
SW
—
≤2.7
≤3.8
13 (23)
0
01
2.7<x≤3.5
3.8<x≤4.3
02
Setting: Air volume when thermostat control is OFF
This setting must correspond with the needs of the user. It
determines the fan speed of the indoor unit during thermostat OFF
condition.
1
If you have set the fan to operate, set the air volume speed:
If you want…
Then
(1)
M
SW
—
During thermostat
OFF at cooling
operation
LL
(2)
12 (22)
6
01
Setup volume
(2)
02
OFF
(a)
03
During thermostat
OFF at heating
operation
LL
(2)
12 (22)
3
01
Setup volume
(2)
02
OFF
(a)
03
(a)
Only use in combination with optional remote sensor or when
setting
M
10 (20),
SW
2, —
03 is used.
Setting: Time to clean air filter
This setting must correspond with the air contamination in the room.
It determines the interval at which
"Time to clean filter"
notification
is displayed on the user interface.
If you want an interval of…
(air contamination)
Then
(1)
M
SW
—
±2500 h (light)
10 (20)
0
01
±1250 h (heavy)
02
Notification ON
3
01
Notification OFF
02
Setting: Thermostat sensor selection
This setting must correspond with how/if the user interface
thermostat sensor is used.
When the user interface thermostat
sensor is…
Then
(1)
M
SW
—
Used in combination with indoor unit
thermistor
10 (20)
2
01
Not used (indoor unit thermistor only)
02
Used exclusively
03
Setting: Thermostat sensor in group control
This setting must correspond with how/if the remote controller
thermostat sensor is used in group control.
If you want to use…
Then
(1)
M
SW
—
Unit sensor only (or remote sensor (if
installed))
(a)
10 (20)
6
01
Unit sensor (or remote sensor (if
installed)) AND remote controller sensor
(b)
(c)
02
(a)
If setting 10(20)-6-01 + 10(20)-2-01 or 10(20)-2-02 or 10(20)-2-03
are set at the same time, then setting for group connection:
10(20)-6-01 has priority.
(b)
If setting 10(20)-6-02 + 10(20)-2-01 or 10(20)-2-02 or 10(20)-2-03
are set at the same time, then setting 10(20)-2-01 or 10(20)-2-02
or 10(20)-2-03 have priority.
(c)
When the remote controller sensor is used in group control, set
10(20)-6-02 and 10(20)-2-03.
Setting: Thermostat differential changeover (if remote sensor is
used)
If the system contains a remote sensor, set the increase/decrease
increments.
If you want to change increments to…
Then
(1)
M
SW
—
1°C
12 (22)
2
01
0.5°C
02
Setting: Automatic changeover differential
Set the temperature difference between the cooling setpoint and the
heating setpoint in automatic mode (availability depends on the
system type). The differential is the cooling setpoint minus the
heating setpoint.
(1)
Field settings are defined as follows:
•
M
: Mode number –
First number
: for group of units –
Number between brackets
: for individual unit
•
SW
: Setting number
• —: Value number
•
: Default
(2)
Fan speed:
•
LL
: Low fan speed
•
Setup volume
: The fan speed corresponds to the speed the user has set (low, medium, high) using the fan speed button on the user
interface.
