Daikin RELQ72TBTJ Series Installation Manual page 39

15.2.3. Auxiliary heat control
To improve efficiency the aux heat can be lockout based on outdoor
temperature.
Item Description
Below this tempera-
ture, AUX heater can
AUX Heater
be energized based
Allowable Temp
on the indoor tempera-
ture condition.
AUX Heater When the outdoor
Allowable temp temp recovered by
Release this temp, AUX heater
differential cannot be allowed.
[2-97]= Aux heater max allowable temp
AUX Heater is allowed to energize when the ambient temp is
smaller than the AUX Heater Max Allowable Temp.
AUX Heater Max
Allowable Temp
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
[2-98]= Aux heater max allowable temp release differential
AUX Heater is not allowed to energize when the outdoor
ambient temp is recovered by differential (below) above the
AUX Heater Max Allowable Temp.
AUX Heater Max Allowable
temp Release differential
0
1
2
English
Min Max Increments
65F
0F (35F 5F
default)
5F, 10F (default), 15F
Fahrenheit Celsius
0 − 17.7
5 − 15
10 − 12.2
15 − 9.4
20 − 6.6
25 − 3.8
30 − 1.1
35 (default) 1.6 (default)
40 4.4
45 7.2
50 10
55 12.7
60 15.5
65 18.3
AUX Heater always NOT allowed
AUX Heater always allowed
Fahrenheit Celsius
5 2.8°C
10 5.6°C
(default) (default)
15 8.3°C
15.2.4. Heat pump lockout
• New control logic to provide more application options for cold
climates.
• Outside temperature can now be measured directly from the out-
door unit coil sensor.
• VRV IV HR, VRV-S and VRV Cold Climate can also be programed to
automatically switch to emergency heat is there is a system fault.
Item Description
Below this tempera-
Heat Pump
ture, heat pump is
Lockout Temp
locked out.
When the outdoor
Heat Pump
temp is recovered by
Lockout Release
this temp, heat pump
differential
is resumed.
Aux heater setting (Type I)
[2-16]=
Value [2-16]
0
1
Aux heater setting (Type II)
[2-37]=
Value [2-37]
1
2
3
4
5
6
Min Max Increments
− 15F
50F 5F
(default)
5F, 10F (default), 15F
Aux heater
OFF
ON
Controlling mode
Mode 1
Mode 2
Mode 3
Mode 4
Mode 5
Mode 6
36