Daikin VRV RSXYP16KJY1, Service Manual, Page: 244 / 255

HRV-Related Si30-408
240 Appendix
7.4.4 Precool / Preheat Operation
Purposes and
Functions „ The operation of HRV unit is delayed when the air conditioner begins operation.
Cautions: 1. The precool / preheat function is possible only when the operation of HRV unit is interlocked
to one-group or two-group of indoor unit.
(It will not function when the HRV unit is in independent operation.)
2. You can select the preset time of 30 / 45 / 60 minutes for delayed operation at the time of
initial setting.
If this preset time is not sufficient, you can extend the preset time for further 30 / 60 / 90
minutes only the preheating function.
3. Since this is two remote controller system (for Indoor unit and HRV unit), the Master / Slave
setting is required.
Example of
Control Wiring
Switch Setting of
the HRV Unit The initial setting by the remote controller for the indoor unit.
„ Precool / preheat On / Off setting. . . . . . . . . . . . . . . . . . . "ON" [17(27)·2·02]
„ Precool / preheat time setting . . . . . . . . . . . . . . . . . . . . . "Time" [17(27)·3·*1]
„ Preheat extra time setting . . . . . . . . . . . . . . . . . . . . . . . . "Time" [17(27)·9·*2]
*1 setting. . . . . . . . . . . . . 01 for 30, 02 for 45 and 03 for 60 minutes.
*2 setting. . . . . . . . . . . . . 01 for 0 (factory set), 02 for 30, 03 for 60 and 04 for 90 minutes.
Optional
Accessories
Required „ None
Remote controller for Setting
Indoor unit Slave
HRV unit Master
X9A
X10A
X11A
J1 J2 F1 F2
P1 P2
P1 P2
JC
SS1
F1 F2
P1 P2
P1 P2
Indoor unit HRV unit
Remote controller
for indoor unit Remote controller
for HRV unit
Connecting line can be
extended up to 500 m
maximum.
(HC0033)