Installation and operation manual
43
RYYQ+RYMQ+RXYQ8~20T7Y1B
VRV IV System Air Conditioner
4P329765-1 – 2012.09
To activate this operation method under cooling operation:
change field setting [2-8]=0 (default).
E.g., when your system is operating in heating, you do not need
as much heating under high outdoor ambient temperatures (e.g.,
20°C) as under low outdoor ambient temperatures (e.g., –5°C).
Using this idea, the system automatically starts decreasing its
refrigerant temperature, automatically reducing the delivered
capacity and increasing the system's efficiency.
To activate this operation method under heating operation:
change field setting [2-9]=0 (default).
Hi-sensible
The refrigerant temperature is set higher/lower (cooling/heating)
compared to basic operation. The focus under high sensible
mode is comfort feeling for the customer.
The selection method of indoor units is important and has to be
considered as the available capacity is not the same as under
basic operation. For details concerning to Hi-sensible
applications, please contact your dealer.
To activate this setting under cooling operation: change field
setting [2-8] to the appropriate value, matching the
requirements of the pre-designed system containing a high
sensible solution.
To activate this setting under heating operation: change field
setting [2-9] to the appropriate value, matching the
requirements of the pre-designed system containing a high
sensible solution.
15.4.2. Several comfort settings are available
For each of above modes a comfort level can be selected. The
comfort level is related to the timing and the effort (energy
consumption) which is put in achieving a certain room temperature by
temporarily changing the refrigerant temperature to different values in
order to achieve requested conditions more quickly.
Powerful
Overshoot (during heating operation) or undershoot (during
cooling operation) is allowed compared to the requested
refrigerant temperature, in order to achieve the required room
temperature very fast. The overshoot is allowed from the start up
moment.
In case of cooling operation the evaporating temperature is
allowed to go down to 3°C on temporary base depending on the
situation.
In case of heating operation the condense temperature is
allowed to go up to 49°C on temporary base depending on the
situation.
When the request from the indoor units becomes more
moderate, the system will eventually go to the steady state
condition which is defined by the operation method above.
To activate the powerful comfort setting under cooling
operation, change field setting [2-81]=3.
This setting is used in conjunction with setting [2-8].
To activate the powerful comfort setting under heating
operation, change field setting [2-82]=3.
This setting is used in conjunction with setting [2-9].
Quick
Overshoot (during heating operation) or undershoot (during
cooling operation) is allowed compared to the requested
refrigerant temperature, in order to achieve the required room
temperature very fast. The overshoot is allowed from the start up
moment.
In case of cooling operation the evaporating temperature is
allowed to go down to 6°C on temporary base depending on the
situation.
In case of heating operation the condense temperature is
allowed to go up to 46°C on temporary base depending on the
situation.
When the request from the indoor units becomes more
moderate, the system will eventually go to the steady state
condition which is defined by the operation method above.
To activate the quick comfort setting under cooling operation,
change field setting [2-81]=2.
This setting is used in conjunction with setting [2-8].
To activate the quick comfort setting under heating operation,
change field setting [2-82]=2.
This setting is used in conjunction with setting [2-9].
Mild
Overshoot (during heating operation) or undershoot (during
cooling operation) is allowed compared to the requested
refrigerant temperature, in order to achieve the required room
temperature very fast. The overshoot is not allowed from the
start up moment. The start up occurs under the condition which
is defined by the operation mode above.
In case of cooling operation the evaporating temperature is
allowed to go down to 6°C on temporary base depending on the
situation.
In case of heating operation the condense temperature is
allowed to go up to 46°C on temporary base depending on the
situation.
When the request from the indoor units becomes more
moderate, the system will eventually go to the steady state
condition which is defined by the operation method above.
The start up condition is different from the powerful and quick
comfort setting.
To activate the mild comfort setting under cooling operation,
change field setting [2-81]=1.
This setting is used in conjunction with setting [2-8].
To activate the mild comfort setting under heating operation,
change field setting [2-82]=1.
This setting is used in conjunction with setting [2-9].
Eco
The original refrigerant temperature target, which is defined by
the operation method (see above) is kept without any correction,
unless for protection control.
To activate the mild comfort setting under cooling operation,
change field setting [2-81]=0.
This setting is used in conjunction with setting [2-8].
To activate the mild comfort setting under heating operation,
change field setting [2-82]=0.
This setting is used in conjunction with setting [2-9].
No matter which control is selected, variations on the behaviour of
the system are still possible due to protection controls to keep the
unit operating under reliable conditions. The intentional target,
however, is fixed and will used to obtain the best balance between
energy consumption and comfort, depending on the application type.
Care should be taken about selection procedures and system setups,
especially when using Hydrobox units. The requested leaving water
temperature from the Hydrobox has priority over this energy saving
control, as it is related to the required water temperature.
Value
[2-8]
T
e
target
3
7
4
8
5
9
6
10
7
11
Value
[2-9]
T
e
target
1
41
3
43
Содержание RYYQ8T7Y1B
Страница 68: ......
Страница 69: ......
Страница 70: ......
Страница 72: ...4P329765 1 2012 09 Copyright 2012 Daikin 4P329765 1 0000000U...