Daikin VRV IV Series - Page 58

14 | About the units and options
Installer and user reference guide
58
RKXYQ5T8+8T7Y1B + RDXYQ5T8+8T7V1B
VRV IV heat pump for indoor installation
4P499898-1B – 2021.12
X1M
X1A
A B C
A1P
DS1
X66A
5 Connect the cable.
X1A
A1P
DS1
X66A
X1M
6 Connect the cool/heat selector switch. Tightening torque X1M (A/B/C):
0.53~0.63N•m
KRC19-26A
X1A
A B C
A B C
X1M
7 Fix the cables with cable ties.
8 Turn ON the DIP switch (DS1‑1).
1 2 3 4
OFF
X66A
ON
DS1
A1P
9 Reattach the service covers. See "17.4To close the compressor unit"[497].
10 Perform a test run. See the "Commissioning" chapter.
Drain pan heater (EKDPH1RDX)
▪ When. Installation is optional. It is recommended in areas where the outside
temperature is below –7°C for more than 24 hours continuously.
▪ Where. Install the drain pan heater in the heat exchanger unit.
▪ How. See the installation instructions delivered with the drain pan heater.