VRF AC host module
Part number: CVRFH
Overview
The iZone VRF AC Host Module (CVRFH) will eliminate the need for an iZone CPU module and smart hub for every indoor unit, which results in a cost-effective climate control solution. Install a single CPU module (C225) on one of the indoor units, then install a CVRFH and AC unit module (C325#) on every subsequent indoor unit and connect them together with a CAT5 cable. Download brochure here.
Installation Guides
Refer to the the VRF AC how-to guide for an overview of a wiring diagram and parts required.
Power up the systems once everything has been connected and follow these steps on the Nova wall controller.
- Tap the Setup button
- Enter your installer code and tap Submit. Register as an installer if you don't have an installer code.
- Enter a name for the system and tap Continue
- Confirm unit brand by tapping Yes
- On the VRF System page, make sure that a tick is shown next to each indoor unit.
- If a tick is not shown, fix the wiring, wait for more than a minute and tap Refresh.
- Do not continue until a tick box is shown next to each indoor unit.
- Configure the CPU Module settings and tap Continue
- Controlling Sensor
- Number of Zones
- Fan Auto
- Configure each zone and tap Continue
- Name
- Type
- Area
- Configure each subsequent FCU and tap Continue
- Name
- Controlling sensor (Return Air / RF sensor)
- Swing type (No swing / Vertical swing / Horizontal swing / Vertical & Horizontal swing)
- Review summary and tap Confirm
- Pair all the sensors if required and tap Done
User Guides
Work in progress.
Troubleshooting
No known issues have been documented for this product at this time.
Specifications
| Specification | Description |
|---|---|
| Power supply | CAT5 cable |
| Communications | CAN Bus / iZone NET |
| Brand compatibility | Daikin, Mitsubishi Electric, Mitsubishi Heavy Industries |
| Number of CVRFH modules per C225 | 15 |
| Dimensions | 32H x 118W x 46L mm |
| Weight | 79g |
Firmware and Updates
CVRFH 1.3 - Jul 2026
- Static pressure changes for Daikin
CVRFH 1.2 - Jan 2026
- Add ability to change the static pressure of a Daikin system from an iZone wall controller
CVRFH 1.1 - Sep 2025
- Enables full VRF ME support when connected to a CPU
CVRFH 1.0 - Dec 2024
- Initial release to production