Daikin REYQ14T7Y1B - 12 Operation; 12.1 Operation range

10 About the system
Installation and operation manual
35
REYQ8~20+REMQ5T7Y1B
VRV IV system air conditioner
4P353996-1E – 2018.04
Charge port / Service port
Stop valve
Filter
Check valve
Pressure relief valve
Thermistor
Solenoid valve
Heat sink (PCB)
Capillary tube
Expansion valve
4‑way valve
Propeller fan
High pressure switch
Low pressure sensor
High pressure sensor
Oil separator
Accumulator
Heat exchanger
Compressor
Double tube heat exchanger
Distributor
Liquid receiver
For the user
10 About the system
The indoor unit part of VRV IV heat recovery system can be used for
heating/cooling applications. The type of indoor unit which can be
used depends on the outdoor units series.
NOTICE
Do NOT use the system for other purposes. In order to
avoid any quality deterioration, do NOT use the unit for
cooling precision instruments, food, plants, animals, or
works of art.
NOTICE
For future modifications or expansions of your system:
A full overview of allowable combinations (for future
system extensions) is available in technical engineering
data and should be consulted. Contact your installer to
receive more information and professional advice.
10.1 System layout
Your VRV IV heat recovery series outdoor unit can be one of
following models:
Model Description
REYQ8~20 Heat recovery model for single or multi-use
REMQ5 Heat recovery model for multi-use only
Depending on the type of outdoor unit which is chosen, some
functionality will or will not exist. It will be indicated throughout this
operation manual when certain features have exclusive model rights
or not.
The complete system can be divided into several sub-systems.
These sub-systems have 100% independence regarding the
selection of cooling and heating operation, and each consists of one
single BS unit or one individual branch set of a multi BS unit, and all
indoor units connected downstream. When using a cool/heat
selector, connect this to the BS unit.
11 User interface
CAUTION
▪ NEVER touch the internal parts of the controller.
▪ Do NOT remove the front panel. Some parts inside are
dangerous to touch and appliance problems may
happen. For checking and adjusting the internal parts,
contact your dealer.
This operation manual will give a non-exhaustive overview of the
main functions of the system.
Detailed information on required actions to achieve certain functions
can be found in the dedicated installation and operation manual of
the indoor unit.
Refer to the operation manual of the installed user interface.
12 Operation
12.1 Operation range
Use the system in the following temperature and humidity ranges for
safe and effective operation.
Cooling Heating
Outdoor temperature –5~43°CDB –20~20°CDB
–20~15.5°C WB
Indoor temperature 21~32°CDB
14~25°C WB
15~27°CDB
Indoor humidity ≤80%
(a)
(a) To avoid condensation and water dripping out of the unit. If
the temperature or the humidity is beyond these conditions,
safety devices may be put in action and the air conditioner
may not operate.
Above operation range is only valid in case direct expansion indoor
units are connected to the VRV IV system.