Hitachi Yutaki Cascade Controller ATW-YCC-01 (for Yutaki M 2 and 3 HP, and all S-80)
The Hitachi ATW-YCC-01 Cascade Controller enables multiple Hitachi heat pump units to operate together as a single coordinated system — typical in larger commercial installs, multi-property social housing schemes, or high-output domestic systems where a single heat pump cannot meet peak demand.
This variant is specifically matched to: Yutaki M 2 and 3 HP outdoor units, and the entire S-80 indoor range.
Cascade Controller Capabilities
One cascade controller manages up to multiple Hitachi heat pumps as a single virtual system, with automatic sequencing and load balancing.
If one unit faults, the remaining units continue running. The system degrades gracefully rather than failing entirely.
At low loads only one unit operates — keeping COP high. As demand rises, additional units stage in. The total system runs efficiently across the full output range.
Designed for installs above typical single-domestic scale — apartment blocks, social housing schemes, light-commercial buildings, MMC factory builds.
Specifications
| Technical Specifications | |
|---|---|
| Manufacturer | Hitachi |
| Model Code | ATW-YCC-01 |
| Type | Cascade controller for multi-unit Hitachi heat pump systems |
| Compatible With | Yutaki M 2 and 3 HP outdoor units, and the entire S-80 indoor range |
| Typical Application | Light commercial, social housing, large domestic installations |
Is Hitachi Yutaki MCS-certified for the BUS grant?
Yes — Hitachi Yutaki M is MCS-listed when installed by a certified MCS installer, qualifying the homeowner for the £7,500 Boiler Upgrade Scheme grant (subject to property eligibility).
Do I need a Hitachi-trained installer?
For warranty registration Hitachi requires the install and commissioning to be carried out by a Hitachi-approved engineer. Quality Heating can put you in touch with Hitachi-trained installers across the UK.
Is the controller included with the Yutaki M outdoor unit?
No — the Hitachi Unit Main Controller (PC-ARFH1E or PC-ARFH2E depending on kW) is a separate purchase. See our matching controller listings.
Can the Yutaki M run with my existing radiators?
In most cases yes, but radiators sized for an 80°C gas boiler may need uprating because heat pumps run at lower flow temperatures (typically 45–55°C on R32). A heat loss survey identifies which rooms (if any) need radiator upgrades.
Does the Yutaki M work with the Hitachi WiFi Gateway?
Yes — pair with the ATW-IOW-01 WiFi IoT Gateway (sold separately) for remote control, monitoring and integration with the Hitachi CSNET Home app.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Hitachi Yutaki Cascade Controller ATW-YCC-01 (for Yutaki M 2 and 3 HP, and all S-80)
Hitachi Yutaki Cascade Controller ATW-YCC-01 (for Yutaki M 2 and 3 HP, and all S-80)
The Hitachi ATW-YCC-01 Cascade Controller enables multiple Hitachi heat pump units to operate together as a single coordinated system — typical in larger commercial installs, multi-property social housing schemes, or high-output domestic systems where a single heat pump cannot meet peak demand.
This variant is specifically matched to: Yutaki M 2 and 3 HP outdoor units, and the entire S-80 indoor range.
Cascade Controller Capabilities
One cascade controller manages up to multiple Hitachi heat pumps as a single virtual system, with automatic sequencing and load balancing.
If one unit faults, the remaining units continue running. The system degrades gracefully rather than failing entirely.
At low loads only one unit operates — keeping COP high. As demand rises, additional units stage in. The total system runs efficiently across the full output range.
Designed for installs above typical single-domestic scale — apartment blocks, social housing schemes, light-commercial buildings, MMC factory builds.
Specifications
| Technical Specifications | |
|---|---|
| Manufacturer | Hitachi |
| Model Code | ATW-YCC-01 |
| Type | Cascade controller for multi-unit Hitachi heat pump systems |
| Compatible With | Yutaki M 2 and 3 HP outdoor units, and the entire S-80 indoor range |
| Typical Application | Light commercial, social housing, large domestic installations |
Is Hitachi Yutaki MCS-certified for the BUS grant?
Yes — Hitachi Yutaki M is MCS-listed when installed by a certified MCS installer, qualifying the homeowner for the £7,500 Boiler Upgrade Scheme grant (subject to property eligibility).
Do I need a Hitachi-trained installer?
For warranty registration Hitachi requires the install and commissioning to be carried out by a Hitachi-approved engineer. Quality Heating can put you in touch with Hitachi-trained installers across the UK.
Is the controller included with the Yutaki M outdoor unit?
No — the Hitachi Unit Main Controller (PC-ARFH1E or PC-ARFH2E depending on kW) is a separate purchase. See our matching controller listings.
Can the Yutaki M run with my existing radiators?
In most cases yes, but radiators sized for an 80°C gas boiler may need uprating because heat pumps run at lower flow temperatures (typically 45–55°C on R32). A heat loss survey identifies which rooms (if any) need radiator upgrades.
Does the Yutaki M work with the Hitachi WiFi Gateway?
Yes — pair with the ATW-IOW-01 WiFi IoT Gateway (sold separately) for remote control, monitoring and integration with the Hitachi CSNET Home app.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Hitachi ATW-YCC-01 Cascade Controller enables multiple Hitachi heat pump units to operate together as a single coordinated system — typical in larger commercial installs, multi-property social housing schemes, or high-output domestic systems where a single heat pump cannot meet peak demand.
This variant is specifically matched to: Yutaki M 2 and 3 HP outdoor units, and the entire S-80 indoor range.
Cascade Controller Capabilities
One cascade controller manages up to multiple Hitachi heat pumps as a single virtual system, with automatic sequencing and load balancing.
If one unit faults, the remaining units continue running. The system degrades gracefully rather than failing entirely.
At low loads only one unit operates — keeping COP high. As demand rises, additional units stage in. The total system runs efficiently across the full output range.
Designed for installs above typical single-domestic scale — apartment blocks, social housing schemes, light-commercial buildings, MMC factory builds.
Specifications
| Technical Specifications | |
|---|---|
| Manufacturer | Hitachi |
| Model Code | ATW-YCC-01 |
| Type | Cascade controller for multi-unit Hitachi heat pump systems |
| Compatible With | Yutaki M 2 and 3 HP outdoor units, and the entire S-80 indoor range |
| Typical Application | Light commercial, social housing, large domestic installations |
Is Hitachi Yutaki MCS-certified for the BUS grant?
Yes — Hitachi Yutaki M is MCS-listed when installed by a certified MCS installer, qualifying the homeowner for the £7,500 Boiler Upgrade Scheme grant (subject to property eligibility).
Do I need a Hitachi-trained installer?
For warranty registration Hitachi requires the install and commissioning to be carried out by a Hitachi-approved engineer. Quality Heating can put you in touch with Hitachi-trained installers across the UK.
Is the controller included with the Yutaki M outdoor unit?
No — the Hitachi Unit Main Controller (PC-ARFH1E or PC-ARFH2E depending on kW) is a separate purchase. See our matching controller listings.
Can the Yutaki M run with my existing radiators?
In most cases yes, but radiators sized for an 80°C gas boiler may need uprating because heat pumps run at lower flow temperatures (typically 45–55°C on R32). A heat loss survey identifies which rooms (if any) need radiator upgrades.
Does the Yutaki M work with the Hitachi WiFi Gateway?
Yes — pair with the ATW-IOW-01 WiFi IoT Gateway (sold separately) for remote control, monitoring and integration with the Hitachi CSNET Home app.
