Data And Notice In Using The Outdoor-Air Processing Mode - Daikin VRV IV S Series Engineering Data

Data and Notice in Using the Outdoor-Air Processing Mode

14. Data and Notice in Using the Outdoor-Air Processing Mode
 The FXVQ-series can be modified to the following operation mode.
- Outdoor air processing mode
It supports cooling and heating operations by introducing outdoor air.
In this outdoor-air processing mode, you cannot control the room temperature.
If you need to do so, please use this mode with another air conditioning unit for room temperature control.
- The combination with an outdoor unit is limited to one indoor unit and one set of outdoor unit (including multiple
connection of outdoor units). The connection of multiple floor standing duct units is prohibited. Connection of floor
standing duct units and other type of indoor units mixed together is prohibited.
• When the outdoor-air processing mode is selected, the airflow range is limited. If the airflow exceeds the specified range,
the product may stop abnormally. On the other hand, if the airflow falls below the specified range, the equipment
reliability may decrease. For details, please see the " Airflow range" section.
• When the outdoor-air processing mode is selected, the machine controls the operation so that the temperature of the
discharge air becomes closer to the preset temperature of the control panel. However, if the air-conditioning load is too
large or too small, the discharge air temperature may not become closer to the preset temperature.
 Airflow range
Please set the airflow according to each operation mode. When selecting a pulley, please see "Fan characteristics (For Pulley
Selection)".
Operation mode
Standard operation mode
Outdoor-air processing mode
 Option models of the rear side air inlet
When outdoor air is taken in from the rear side of the indoor unit in the outdoor-air processing mode, please prepare the following
option (Rear Suction Kit). For the shape and external dimension for the main unit attachment of this kit, please see "Detail of Optional
Accessories". Please remove the air inlet protection gauze of the main unit when attaching a front shield plate.
Option model name
 Temperature setting range
The temperature you can set varies in each operation mode.
Operation mode
Standard operation mode
Outdoor-air processing mode
Note: The setting is not available in the fan operation mode.
 Operation limits
Operation limit
(heating)
Outdoor air temp. (˚C DB)
296
Airflow range (m
FXVQ125NY1
28 - 50 (43)
25 - 29 (27)
FXVQ125NY1
KDFJ905A140
Cooling
15 - 32°C
15 - 27°C(controlled by the discharge air
temperature)
Notes: 1. This diagram shows operation limits under the following
Operation limit
(cooling)
Fan only
operation
3
/min); The value in ( ) is the rated airflow.
FXVQ200NY1
42 - 76 (69)
38 - 44 (41)
FXVQ200NY1
KDFJ905A200
18 - 35°C(controlled by the discharge air
conditions:
Indoor/Outdoor units - Equivalent piping length: 7.5 m
Level difference
2. Field settings and airflow rate should be changed from the
control panel.
(The airflow rate range is limited.)
3. Use the unit at indoor and outdoor air temperatures within the
operation limits.
(Using the unit at temperatures outside the operation limit may
cause it to malfunction or abnormal stop.)
4. Discharge air temperature can be set from the control panel,
but may not reach the set temperature depending on outdoor
air conditions or equipment protection control. (Particularly in
heating operation, discharge air temperature may come close
to room temperature and make you feel cold.)
5. Room temperature cannot be controlled while in outdoor-air
processing mode. If room temperature needs to be controlled,
use other room temperature control air conditioner in
combination.
EDMT331529A
FXVQ250NY1
63 - 96 (86)
48 - 56 (52)
FXVQ250NY1
KDFJ905A280
Heating
15 - 32°C
temperature)
CJ: CA13A209
: 0 m
FXVQ-N