Daikin VRV Service Manual

HRV-Related Si30-408
236 Appendix
7.3 Examples of Mistakes in Wiring and System Designing
7.3.1 It is Necessary to Install the Remote Controller for the Transmission
Line.
<Part 1>

When you connect the transmission line for the remote controller, the remote controller
should be installed on the transmission line.
Example of
Control Wiring
Reason Because the signal through the transmission line is originated from the remote controller, there
is no transmission signal to operate the units, if the remote controller is not installed.
7.3.2 The Centralized Transmission Line should be Connected to the
Indoor Unit.
<Part 2>

If the HRV unit is interlocked to the centralized controller, the central transmission line
should be connected to the terminal no. F1 and F2 of indoor unit.
Example of
Control Wiring
Reason The information from the indoor unit cannot be transmitted to the central controller through the
HRV unit. And also the information from the central controller cannot be transmitted to the
indoor unit through the HRV unit.
X9A
X14A
X15A
X17A
X10A
X11A
J1 J2 F1 F2
P1 P2
JC
SS1
F1 F2
P1 P2
(HC0041)
Indoor unit HRV unit
No remote controller
X9A
X10A
X11A
J1 J2 F1 F2
P1 P2
JC
SS1
F1 F2
P1 P2
P1 P2
(HC0042)
To central controller
Centralized transmission line
Indoor unit HRV unit
Remote controller
for indoor unit

Daikin VRV Specifications

General

Brand	Daikin
Energy Efficiency	High
Control	Centralized and individual zone control
Inverter Technology	Yes
Type	Variable Refrigerant Volume (VRV)
Cooling Capacity	Varies by model
Heating Capacity	Varies by model
Refrigerant	R-32 or R-410A
Application	Commercial buildings, large residential spaces
SEER	Varies by model
HSPF	Varies by model
EER	Varies by model
COP	Varies by model
Sound Level	Varies by model
Indoor Unit Options	wall-mounted, ducted