Daikin VRV RXYQ72-384XAYCA Service Manual page 200

Field Settings for Outdoor Unit
2.5.4 Auxiliary Heat Control
To improve efficiency the auxiliary heat can be lockout based on outdoor temperature.
Auxiliary heater
allowable
temperature
Auxiliary heater
allowable
temperature
release differential
[2-97]:
[2-98]:
Auxiliary heater max allowable
temperature release differential
193
Item Description
Below this temperature, auxiliary
heater can be energized based on
the indoor temperature condition.
When the outdoor temperature
recovered by this temperature,
auxiliary heater cannot be allowed.
Auxiliary heater maximum allowable temperature
Auxiliary heater is allowed to energize when the ambient temperature is smaller
than the auxiliary heater maximum allowable temperature.
Auxiliary heater
maximum allowable
temperature
0
1
2
3
4
5
6
7 (default)
8
9
10
11
12
13
14
15
Auxiliary heater maximum allowable temperature release differential
Auxiliary heater is not allowed to energize when the outdoor air temperature is
recovered by differential (below) above the auxiliary heater maximum allowable
temperature.
0
1 (default)
2
Min
(−17.7°C)
Fahrenheit (°F)
0
5
10
15
20
25
30
35
40
45
50
55
60
65
Auxiliary heater always NOT allowed
Auxiliary heater always allowed
Fahrenheit (°F)
5
10
15
Max
65°F (18.3°C)
0°F
(Default
35°F (1.6°C))
5°F, 10°F (default), 15°F
(2.8°C, 5.6°C (default), 8.3°C)
Celsius (°C)
−17.7
−15
−12.2
−9.4
−6.6
−3.8
−1.1
1.6
4.4
7.2
10
12.7
15.5
18.3
Celsius (°C)
2.8
5.6
8.3
Part 5 Field Settings and Test Operation
SiUS342004EB
Increments
5°F
(2.8°C)