Rinnai Compatibility:

Current Firmware Version - 1.0

SERIES & kW	INDOOR	OUTDOOR
DINLR XX Series only

Can use RA, Zones, Master or RF as controlling sensor

Polarity is critical see below, for correct connection

For CN40 connection.

Connect a 2 core + earth, twisted pair control cable from the C225 / C325R to the CN40/CN9/CNXYE port on the fan coil unit. This cable is supplied by iZone - CACUCM15

iZonepedia > C325HS - Hisense > image-20220811-053441.png

The new Rinnai indoor units may have either of two connections: CN9 and CNXYE.

For CN9 connection.

Screenshot 2024-02-15 155316.jpg

For CNXYE Connection

Indoor fan coil unit PCB

CN40: Connect to X and Y

C225 AC unit connector: Connect AC unit cable from fan coil to C225 as indicated

Polarity is critical: Make sure it is wired in accordance with these instructions on both the CN40 /CN9/CNXYE connector on the fan coil PCB and the C225 cable connector

Cable from CN40: Ensure the cable is shielded, 2 core, twisted pair. This cable is pre-terminated suitable for CN40 connector and is supplied by iZone

Resetting the Unit Addressing on Rinnai 18Kw+ units

When a Rinnai AC unit controller is used to do a test run, to put the iZone control system back on and operate the AC, unit addressing needs to be reset. Below is the procedure on how to do it.

First, turn off the air conditioner

Clear the indoor addresses by adjusting the S6 dip switch on OUTDOOR UNIT BOARD according to the photo:

Wait for 5 minutes, then turn the air conditioner back on.

Please wait another 5 minutes and turn it off again.

Next, switch the unit to automatic addressing as shown below:

Dip switch ON-ON.png

Now please connect iZone system back to the indoor unit and wait for 5 minutes. Afterward, switch on the air conditioner and test it using iZone.