16
English
Using this idea, the system automatically starts decreasing its refrig-
erant 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]=1 (default).
•
Hi-sensible (cooling)
The refrigerant temperature is set higher (cooling) compared to
basic operation. The focus under high sensible mode is improved
comfort for the customer.
The selection method of indoor units is important and has to be con-
sidered 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 require-
ments of the pre-designed system containing a high
sensible
solution.
11-2 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 temper-
ature, 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 37°F (3°C) on temporary base depending on the situation.
In case of heating operation the condense temperature is allowed to
go up to 120°F (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 opera-
tion, change field setting [2-41]=3.
This setting is used in conjunction with setting [2-8].
• To activate the powerful comfort setting under heating opera-
tion, change field setting [2-42]=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 temper-
ature, 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 43°F (6°C) on temporary base depending on the situation.
In case of heating operation the condense temperature is allowed to
go up to 115°F (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 [2-41]=2.
This setting is used in conjunction with setting [2-8].
• To activate the quick comfort setting under heating operation,
change field setting [2-42]=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 temper-
ature, 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 43°F (6°C) on temporary base depending on the situation.
In case of heating operation the condense temperature is allowed to
go up to 115°F (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 com-
fort setting.
• To activate the mild comfort setting under cooling operation,
change field setting [2-41]=1.
This setting is used in conjunction with setting [2-8].
• To activate the mild comfort setting under heating operation,
change field setting [2-42]=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 [2-41]=0.
This setting is used in conjunction with setting [2-8].
• To activate the mild comfort setting under heating operation,
change field setting [2-42]=0.
This setting is used in conjunction with setting [2-9].
11-3 Switch over ambient setting
When the gas furnace is connected, it can be set so that gas furnace
operation can be switched at the outside air temperature.
The switching temperature can be set in service mode 2-14. Also, in
order to prevent frequent switching, a differential of the outside air tem-
perature is provided (2-15 # 1
Δ
T = 10°F (5.6°C)).
The factory setting is 2-14 # 6
15°F(-9.4°C)
Value
To target
4
46°F(8°C)
5
48°F(9°C)
6
50°F(10°C)
7
52°F(11°C)
Page
2-14
Setting #
# 0 1 2
3
4
5
6
7
8
9 10 11 12 13 14 15
Switch over
Temp.
°C -20.5 -17.7 -15 -12.2 -9.4 -6.6 -3.8 -1.1 1.6 4.4 7.2 10 100 -100
°F
-5
0
5
10
15 20 25 30 35 40 45 50 212 -148
Page
2-15
Setting #
#
0
1
2
Switch over differential
Temp.
Δ
T
°C
2.8
5.6
8.3
°F
5
10
15
Ambient
°F (°C)
Heat pump
Gas Furness
ΔT=10°F(5.6°C)
(mode 2-14 #6)
(mode 2-15 #1)
15 (-9.4)
01_EN_3P591321-3B.fm Page 16 Tuesday, December 24, 2019 10:28 AM
