On-Site Configuration - Rinnai DONSR20Z9 Operation & Installation Manual

For the specific connection method, refer to the instructions in the corresponding wired controller
manual to carry out the wiring and connections.
CAUTION
13.4 Handling the Electrical Wiring Connection Points
•
Once the wiring and connections are done, use tie straps to secure the wiring properly so that the connection
joint cannot be pulled apart by external force. The connection wiring must be straight out so that the cover of
the electrical box is level and can be closed tightly.
•
Use professional insulation and sealing materials to seal and protect the perforated wires. Poor sealing may
lead to condensation, and entry of small animals and insects that may cause short circuits in parts of the
electrical system, causing the system to fail.

14. ON-SITE CONFIGURATION

14.1 Capacity Settings
Set up the PCB DIP switch on the indoor electric control box to cater to different uses. Once the settings are done,
make sure you cut off the main power switch again, and then switch the power on. If the power is not cut off and
switched on again, the settings will not be executed.
Table 12.
ENC1
+
Toggle switch
Dial code
E
F
The capacity DIP switches have been configured before delivery. Only a professional maintenance
personnel should change these settings.
CAUTION
14.2 Address Settings
When this indoor unit is connected to the outdoor unit, the outdoor unit will automatically allocate the address to
the indoor unit. Alternatively, you may use the controller to manually set the address.
•
The network address and the indoor unit address are the same, and does not have to be configured separately.
•
Once the address settings are completed, mark the address of the indoor unit to facilitate after-sales
maintenance.
•
The centralised control of the indoor unit is completed on the outdoor unit. For details, refer to the manual on
the outdoor unit.
Once the centralised control function for the indoor unit has been completed on the outdoor
unit, the DIP switch on main control panel of the outdoor unit must be set to auto addressing;
otherwise, the indoor unit in the system are not controlled by the centralized controller.
CAUTION
14.3 8.3 DIP Switch Settings on Main Board
SW1_1
SW1
Cooling mode temperature
compensation is 0°C
[ 0 ]
SW1
Cooling mode temperature
compensation is 2°C
[ 1 ]
Rinnai
SW7
Set cooling capacity
Cooling capacity
20000W
24000W
POWER_S
SW2
SW2
External static pressure 1
[ 00 ]
SW2
External static pressure 2
[ 01 ]
31 Ducted Reverse Cycle Inverter Installation Manual (Indoor)
INSTALLATION INDOOR
+
SW7
Figure 32.